Andes(nds32) Linux Kernel Port

new file mode 100644
index 0000000..d469af0
@@ -0,0 +1,52 @@
+/*
+ * Copyright (C) 2005-2017 Andes Technology Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __NDS32_ASSEMBLER_H__
+#define __NDS32_ASSEMBLER_H__
+
+.macro gie_disable
+	setgie.d
+	dsb
+.endm
+
+.macro gie_enable
+	setgie.e
+	dsb
+.endm
+
+.macro gie_save oldpsw
+	mfsr \oldpsw, $ir0
+	setgie.d
+        dsb
+.endm
+
+.macro gie_restore oldpsw
+	andi \oldpsw, \oldpsw, #0x1
+	beqz \oldpsw, 7001f
+	setgie.e
+	dsb
+7001:
+.endm
+
+
+#define USER(insn,  reg, addr, opr)	\
+9999:	insn  reg, addr, opr;		\
+	.section __ex_table,"a";	\
+	.align 3;			\
+	.long	9999b, 9001f;		\
+	.previous
+
+#endif /* __NDS32_ASSEMBLER_H__ */

982 lines not on this page · raw message

92 lines not on this page · raw message

new file mode 100644
index 0000000..2d9468b
@@ -0,0 +1,40 @@
+/*
+ * Copyright (C) 2005-2017 Andes Technology Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <linux/sched.h>
+#include <linux/sched/task_stack.h>
+#include <linux/kbuild.h>
+#include <asm/thread_info.h>
+#include <asm/ptrace.h>
+
+int main(void)
+{
+	DEFINE(TSK_TI_FLAGS, offsetof(struct task_struct, thread_info.flags));
+	DEFINE(TSK_TI_PREEMPT,
+	       offsetof(struct task_struct, thread_info.preempt_count));
+	DEFINE(THREAD_CPU_CONTEXT,
+	       offsetof(struct task_struct, thread.cpu_context));
+	DEFINE(OSP_OFFSET, offsetof(struct pt_regs, osp));
+	DEFINE(SP_OFFSET, offsetof(struct pt_regs, sp));
+	DEFINE(FUCOP_CTL_OFFSET, offsetof(struct pt_regs, fucop_ctl));
+	DEFINE(IPSW_OFFSET, offsetof(struct pt_regs, ipsw));
+	DEFINE(SYSCALLNO_OFFSET, offsetof(struct pt_regs, syscallno));
+	DEFINE(IPC_OFFSET, offsetof(struct pt_regs, ipc));
+	DEFINE(R0_OFFSET, offsetof(struct pt_regs, uregs[0]));
+	DEFINE(CLOCK_REALTIME_RES, MONOTONIC_RES_NSEC);
+	DEFINE(CLOCK_COARSE_RES, LOW_RES_NSEC);
+	return 0;
+}

406 lines not on this page · raw message

new file mode 100644
index 0000000..269c3cd
@@ -0,0 +1,124 @@
+/*
+ * Copyright (C) 2005-2017 Andes Technology Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <linux/kernel.h>
+#include <linux/console.h>
+#include <linux/init.h>
+#include <linux/io.h>
+
+#include <linux/serial_reg.h>
+
+extern void __iomem *early_io_map(phys_addr_t phys);
+static void __iomem *early_base;
+static void (*printch) (char ch);
+
+/*
+ * 8250/16550 (8-bit aligned registers) single character TX.
+ */
+static void uart8250_8bit_printch(char ch)
+{
+	while (!(readb(early_base + UART_LSR) & UART_LSR_THRE)) ;
+	writeb(ch, early_base + UART_TX);
+}
+
+/*
+ * 8250/16550 (32-bit aligned registers) single character TX.
+ */
+static void uart8250_32bit_printch(char ch)
+{
+	while (!(readl(early_base + (UART_LSR << 2)) & UART_LSR_THRE)) ;
+	writel(ch, early_base + (UART_TX << 2));
+}
+
+struct earlycon_match {
+	const char *name;
+	void (*printch) (char ch);
+};
+
+static const struct earlycon_match earlycon_match[] __initconst = {
+	{.name = "uart8250-8bit",.printch = uart8250_8bit_printch,},
+	{.name = "uart8250-32bit",.printch = uart8250_32bit_printch,},
+	{}
+};
+
+static void early_write(struct console *con, const char *s, unsigned n)
+{
+	while (n-- > 0) {
+		if (*s == '\n')
+			printch('\r');
+		printch(*s);
+		s++;
+	}
+}
+
+static struct console early_console_dev = {
+	.name = "earlycon",
+	.write = early_write,
+	.flags = CON_PRINTBUFFER | CON_BOOT,
+	.index = -1,
+};
+
+/*
+ * Parse earlyprintk=... parameter in the format:
+ *
+ *   <name>[,<addr>][,<options>]
+ *
+ * and register the early console. It is assumed that the UART has been
+ * initialised by the bootloader already.
+ */
+static int __init setup_early_printk(char *buf)
+{
+	const struct earlycon_match *match = earlycon_match;
+	phys_addr_t paddr = 0;
+
+	if (!buf) {
+		pr_warning("No earlyprintk arguments passed.\n");
+		return 0;
+	}
+
+	while (match->name) {
+		size_t len = strlen(match->name);
+		if (!strncmp(buf, match->name, len)) {
+			buf += len;
+			break;
+		}
+		match++;
+	}
+	if (!match->name) {
+		pr_warning("Unknown earlyprintk arguments: %s\n", buf);
+		return 0;
+	}
+
+	/* I/O address */
+	if (!strncmp(buf, ",0x", 3)) {
+		char *e;
+		paddr = simple_strtoul(buf + 1, &e, 16);
+		buf = e;
+	}
+
+	if (paddr)
+		early_base = early_io_map(paddr);
+
+	if (!strcmp(CONFIG_NDS32_BUILTIN_DTB, "ae3xx"))
+		early_base += 32;
+
+	printch = match->printch;
+	register_console(&early_console_dev);
+
+	return 0;
+}
+
+early_param("earlyprintk", setup_early_printk);

new file mode 100644
index 0000000..2c9c03d
@@ -0,0 +1,79 @@
+/*
+ * Copyright (C) 2005-2017 Andes Technology Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __ASM_NDS32_PTRACE_H
+#define __ASM_NDS32_PTRACE_H
+
+#define PTRACE_GETREGS		12
+#define PTRACE_SETREGS		13
+#define PTRACE_GETFPREGS	14
+#define PTRACE_SETFPREGS	15
+
+#include <uapi/asm/ptrace.h>
+
+#ifndef __ASSEMBLY__
+
+struct pt_regs {
+	union {
+		struct user_pt_regs user_regs;
+		struct {
+			long uregs[26];
+			long fp;
+			long gp;
+			long lp;
+			long sp;
+			long ipc;
+#if defined(CONFIG_HWZOL)
+			long lb;
+			long le;
+			long lc;
+#else
+			long dummy[3];
+#endif
+			long syscallno;
+		};
+	};
+	long orig_r0;
+	long ir0;
+	long ipsw;
+	long pipsw;
+	long pipc;
+	long pp0;
+	long pp1;
+	long fucop_ctl;
+	long osp;
+};
+
+#include <asm/bitfield.h>
+extern void show_regs(struct pt_regs *);
+/* Avoid circular header include via sched.h */
+struct task_struct;
+extern void send_sigtrap(struct task_struct *tsk, struct pt_regs *regs,
+			 int error_code, int si_code);
+
+#define arch_has_single_step()		(1)
+#define user_mode(regs)			(((regs)->ipsw & PSW_mskPOM) == 0)
+#define interrupts_enabled(regs)	(!!((regs)->ipsw & PSW_mskGIE))
+#define valid_user_regs(regs)		(user_mode(regs) && interrupts_enabled(regs))
+#define regs_return_value(regs)		((regs)->uregs[0])
+#define instruction_pointer(regs)	((regs)->ipc)
+#define user_stack_pointer(regs)        ((regs)->sp)
+#define profile_pc(regs) 		instruction_pointer(regs)
+
+#define ARCH_HAS_USER_SINGLE_STEP_INFO
+
+#endif /* __ASSEMBLY__ */
+#endif

60 lines not on this page · raw message

442 lines not on this page · raw message

564 lines not on this page · raw message

new file mode 100644
index 0000000..38e8ee1
@@ -0,0 +1,41 @@
+/*
+ * Copyright (C) 2005-2017 Andes Technology Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __ASM_NDS32_FIXMAP_H
+#define __ASM_NDS32_FIXMAP_H
+
+#ifdef CONFIG_HIGHMEM
+#include <linux/threads.h>
+#include <asm/kmap_types.h>
+#endif
+
+enum fixed_addresses {
+	FIX_KMAP_RESERVED,
+	FIX_KMAP_BEGIN,
+#ifdef CONFIG_HIGHMEM
+	FIX_KMAP_END = FIX_KMAP_BEGIN + (KM_TYPE_NR * NR_CPUS),
+#endif
+#ifdef CONFIG_EARLY_PRINTK
+	FIX_EARLY_DEBUG,
+#endif
+	__end_of_fixed_addresses
+};
+#define FIXADDR_TOP             ((unsigned long) (-(16 * PAGE_SIZE)))
+#define FIXADDR_SIZE		((__end_of_fixed_addresses) << PAGE_SHIFT)
+#define FIXADDR_START		(FIXADDR_TOP - FIXADDR_SIZE)
+
+#include <asm-generic/fixmap.h>
+#endif /* __ASM_NDS32_FIXMAP_H */

78 lines not on this page · raw message

147 lines not on this page · raw message

new file mode 100644
index 0000000..147fd06
@@ -0,0 +1,25 @@
+/*
+ * Copyright (C) 2005-2017 Andes Technology Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __NDS32_MMU_H
+#define __NDS32_MMU_H
+
+typedef struct {
+	unsigned int id;
+	void *vdso;
+} mm_context_t;
+
+#endif

78 lines not on this page · raw message

109 lines not on this page · raw message

426 lines not on this page · raw message

new file mode 100644
index 0000000..5679648
@@ -0,0 +1,33 @@
+/*
+ * Copyright (C) 2005-2017 Andes Technology Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef _ASMNDS32_SHMPARAM_H
+#define _ASMNDS32_SHMPARAM_H
+
+/*
+ * This should be the size of the virtually indexed cache/ways,
+ * whichever is greater since the cache aliases every size/ways
+ * bytes.
+ */
+#define	SHMLBA	(4 * PAGE_SIZE)	/* attach addr a multiple of this */
+#define	REALSHMLBA	SHMLBA
+
+/*
+ * Enforce SHMLBA in shmat
+ */
+#define __ARCH_FORCE_SHMLBA
+
+#endif /* _ASMNDS32_SHMPARAM_H */

new file mode 100644
index 0000000..d5101bd
@@ -0,0 +1,92 @@
+/*
+ * Copyright (C) 2005-2017 Andes Technology Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <linux/export.h>
+#include <linux/highmem.h>
+#include <linux/sched.h>
+#include <linux/smp.h>
+#include <linux/interrupt.h>
+#include <linux/bootmem.h>
+#include <asm/fixmap.h>
+#include <asm/tlbflush.h>
+
+void *kmap(struct page *page)
+{
+	unsigned long vaddr;
+	might_sleep();
+	if (!PageHighMem(page))
+		return page_address(page);
+	vaddr = (unsigned long)kmap_high(page);
+	return (void *)vaddr;
+}
+
+EXPORT_SYMBOL(kmap);
+
+void kunmap(struct page *page)
+{
+	BUG_ON(in_interrupt());
+	if (!PageHighMem(page))
+		return;
+	kunmap_high(page);
+}
+
+EXPORT_SYMBOL(kunmap);
+
+void *kmap_atomic(struct page *page)
+{
+	unsigned int idx;
+	unsigned long vaddr, pte;
+	int type;
+	pte_t *ptep;
+
+	preempt_disable();
+	pagefault_disable();
+	if (!PageHighMem(page))
+		return page_address(page);
+
+	type = kmap_atomic_idx_push();
+
+	idx = type + KM_TYPE_NR * smp_processor_id();
+	vaddr = __fix_to_virt(FIX_KMAP_BEGIN + idx);
+	pte = (page_to_pfn(page) << PAGE_SHIFT) | (PAGE_KERNEL);
+	ptep = pte_offset_kernel(pmd_off_k(vaddr), vaddr);
+	set_pte(ptep, pte);
+
+	__nds32__tlbop_inv(vaddr);
+	__nds32__mtsr_dsb(vaddr, NDS32_SR_TLB_VPN);
+	__nds32__tlbop_rwr(pte);
+	__nds32__isb();
+	return (void *)vaddr;
+}
+
+EXPORT_SYMBOL(kmap_atomic);
+
+void __kunmap_atomic(void *kvaddr)
+{
+	if (kvaddr >= (void *)FIXADDR_START) {
+		unsigned long vaddr = (unsigned long)kvaddr;
+		pte_t *ptep;
+		kmap_atomic_idx_pop();
+		__nds32__tlbop_inv(vaddr);
+		__nds32__isb();
+		ptep = pte_offset_kernel(pmd_off_k(vaddr), vaddr);
+		set_pte(ptep, 0);
+	}
+	pagefault_enable();
+	preempt_enable();
+}
+
+EXPORT_SYMBOL(__kunmap_atomic);

328 lines not on this page · raw message

103 lines not on this page · raw message

new file mode 100644
index 0000000..bce62d7
@@ -0,0 +1,29 @@
+/*
+ * Copyright (C) 2005-2017 Andes Technology Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <linux/extable.h>
+#include <asm/uaccess.h>
+
+int fixup_exception(struct pt_regs *regs)
+{
+	const struct exception_table_entry *fixup;
+
+	fixup = search_exception_tables(instruction_pointer(regs));
+	if (fixup)
+		regs->ipc = fixup->fixup;
+
+	return fixup != NULL;
+}

420 lines not on this page · raw message

88 lines not on this page · raw message

new file mode 100644
index 0000000..36ec549
@@ -0,0 +1,25 @@
+/*
+ * Copyright (C) 2005-2017 Andes Technology Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __NDS32_CACHE_H__
+#define __NDS32_CACHE_H__
+
+#define L1_CACHE_BYTES	32
+#define L1_CACHE_SHIFT	5
+
+#define ARCH_DMA_MINALIGN   L1_CACHE_BYTES
+
+#endif /* __NDS32_CACHE_H__ */

new file mode 100644
index 0000000..a59d73d
@@ -0,0 +1,26 @@
+/*
+ * Copyright (C) 2005-2017 Andes Technology Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+struct cache_info {
+	unsigned char ways;
+	unsigned char line_size;
+	unsigned short sets;
+	unsigned short size;
+#if !defined(CONFIG_CPU_CACHE_NONALIASING)
+	unsigned short aliasing_num;
+	unsigned int aliasing_mask;
+#endif
+};

57 lines not on this page · raw message

81 lines not on this page · raw message

94 lines not on this page · raw message

41 lines not on this page · raw message

60 lines not on this page · raw message

new file mode 100644
index 0000000..a56a37d
@@ -0,0 +1,19 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 1994, 1995, 1996 by Ralf Baechle
+ * Copyright (C) 2005-2017 Andes Technology Corporation
+ */
+#ifndef	_ASM_CACHECTL
+#define	_ASM_CACHECTL
+
+/*
+ * Options for cacheflush system call
+ */
+#define	ICACHE	0		/* flush instruction cache        */
+#define	DCACHE	1		/* writeback and flush data cache */
+#define	BCACHE	2		/* flush instruction cache + writeback and flush data cache */
+
+#endif /* _ASM_CACHECTL */

62 lines not on this page · raw message

331 lines not on this page · raw message

608 lines not on this page · raw message

63 lines not on this page · raw message

new file mode 100644
index 0000000..027f7df
@@ -0,0 +1,25 @@
+/*
+ * Copyright (C) 2005-2017 Andes Technology Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef _ASM_NDS32_CURRENT_H
+#define _ASM_NDS32_CURRENT_H
+
+#ifndef __ASSEMBLY__
+register struct task_struct *current asm("$r25");
+#endif /* __ASSEMBLY__ */
+#define tsk $r25
+
+#endif /* _ASM_NDS32_CURRENT_H */

116 lines not on this page · raw message

91 lines not on this page · raw message

219 lines not on this page · raw message

new file mode 100644
index 0000000..7c1940f
@@ -0,0 +1,49 @@
+/*
+ * Copyright (C) 2005-2017 Andes Technology Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <asm/nds32.h>
+#include <nds32_intrinsic.h>
+
+#define arch_local_irq_disable()	\
+	GIE_DISABLE();
+
+#define arch_local_irq_enable()	\
+	GIE_ENABLE();
+static inline unsigned long arch_local_irq_save(void)
+{
+	unsigned long flags;
+	flags = __nds32__mfsr(NDS32_SR_PSW) & PSW_mskGIE;
+	GIE_DISABLE();
+	return flags;
+}
+
+static inline unsigned long arch_local_save_flags(void)
+{
+	unsigned long flags;
+	flags = __nds32__mfsr(NDS32_SR_PSW) & PSW_mskGIE;
+	return flags;
+}
+
+static inline void arch_local_irq_restore(unsigned long flags)
+{
+	if(flags)
+		GIE_ENABLE();
+}
+
+static inline int arch_irqs_disabled_flags(unsigned long flags)
+{
+	return !flags;
+}

new file mode 100644
index 0000000..1b935f7
@@ -0,0 +1,34 @@
+/*
+ * Copyright (C) 2005-2017 Andes Technology Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <linux/irqchip.h>
+
+void __init init_IRQ(void)
+{
+	irqchip_init();
+}
+
+#ifdef CONFIG_TRACE_IRQFLAGS
+void notrace arch_trace_hardirqs_on(void)
+{
+	trace_hardirqs_on();
+}
+
+void notrace arch_trace_hardirqs_off(void)
+{
+	trace_hardirqs_off();
+}
+#endif

new file mode 100644
index 0000000..5aa107c
@@ -0,0 +1,116 @@
+/*
+ * Copyright (C) 2005-2017 Andes Technology Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __NDS32_FUTEX_H__
+#define __NDS32_FUTEX_H__
+
+#include <linux/futex.h>
+#include <linux/uaccess.h>
+#include <asm/errno.h>
+
+#define __futex_atomic_ex_table(err_reg)			\
+	"	.pushsection __ex_table,\"a\"\n"		\
+	"	.align	3\n"					\
+	"	.long	1b, 4f\n"				\
+	"	.long	2b, 4f\n"				\
+	"	.popsection\n"					\
+	"	.pushsection .fixup,\"ax\"\n"			\
+	"4:	move	%0, " err_reg "\n"			\
+	"	j	3b\n"					\
+	"	.popsection"
+
+#define __futex_atomic_op(insn, ret, oldval, tmp, uaddr, oparg)	\
+	smp_mb();						\
+	asm volatile(					\
+	"	movi	$ta, #0\n"				\
+	"1:	llw	%1, [%2+$ta]\n"				\
+	"	" insn "\n"					\
+	"2:	scw	%0, [%2+$ta]\n"				\
+	"	beqz	%0, 1b\n"				\
+	"	movi	%0, #0\n"				\
+	"3:\n"							\
+	__futex_atomic_ex_table("%4")				\
+	: "=&r" (ret), "=&r" (oldval)				\
+	: "r" (uaddr), "r" (oparg), "i" (-EFAULT)		\
+	: "cc", "memory")
+static inline int
+futex_atomic_cmpxchg_inatomic(u32 * uval, u32 __user * uaddr,
+			      u32 oldval, u32 newval)
+{
+	int ret = 0;
+	u32 val, tmp, flags;
+
+	if (!access_ok(VERIFY_WRITE, uaddr, sizeof(u32)))
+		return -EFAULT;
+
+	smp_mb();
+	asm volatile ("       movi    $ta, #0\n"
+		      "1:     llw     %1, [%6 + $ta]\n"
+		      "       sub     %3, %1, %4\n"
+		      "       cmovz   %2, %5, %3\n"
+		      "       cmovn   %2, %1, %3\n"
+		      "2:     scw     %2, [%6 + $ta]\n"
+		      "       beqz    %2, 1b\n"
+		      "3:\n                   " __futex_atomic_ex_table("%7")
+		      :"+&r"(ret), "=&r"(val), "=&r"(tmp), "=&r"(flags)
+		      :"r"(oldval), "r"(newval), "r"(uaddr), "i"(-EFAULT)
+		      :"$ta", "memory");
+	smp_mb();
+
+	*uval = val;
+	return ret;
+}
+
+static inline int
+arch_futex_atomic_op_inuser(int op, int oparg, int *oval, u32 __user *uaddr)
+{
+	int oldval = 0, ret;
+
+
+	pagefault_disable();
+	switch (op) {
+	case FUTEX_OP_SET:
+		__futex_atomic_op("move	%0, %3", ret, oldval, tmp, uaddr,
+				  oparg);
+		break;
+	case FUTEX_OP_ADD:
+		__futex_atomic_op("add	%0, %1, %3", ret, oldval, tmp, uaddr,
+				  oparg);
+		break;
+	case FUTEX_OP_OR:
+		__futex_atomic_op("or	%0, %1, %3", ret, oldval, tmp, uaddr,
+				  oparg);
+		break;
+	case FUTEX_OP_ANDN:
+		__futex_atomic_op("and	%0, %1, %3", ret, oldval, tmp, uaddr,
+				  ~oparg);
+		break;
+	case FUTEX_OP_XOR:
+		__futex_atomic_op("xor	%0, %1, %3", ret, oldval, tmp, uaddr,
+				  oparg);
+		break;
+	default:
+		ret = -ENOSYS;
+	}
+
+	pagefault_enable();
+
+	if (!ret)
+		*oval = oldval;
+
+	return ret;
+}
+#endif /* __NDS32_FUTEX_H__ */

178 lines not on this page · raw message

new file mode 100644
index 0000000..98b3ae9
@@ -0,0 +1,33 @@
+/*
+ * Copyright (C) 2005-2017 Andes Technology Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __ASM_NDS32_IO_H
+#define __ASM_NDS32_IO_H
+
+#ifdef __KERNEL__
+
+#include <asm-generic/iomap.h>
+extern void __iomem *__ioremap(unsigned long, size_t, unsigned long,
+			       unsigned long);
+extern void __iounmap(void __iomem * addr);
+
+#define ioremap(cookie,size)		__ioremap(cookie,size,0,1)
+#define ioremap_nocache(cookie,size)	__ioremap(cookie,size,0,1)
+#define iounmap(cookie)			__iounmap(cookie)
+#include <asm-generic/io.h>
+
+#endif /* __KERNEL__ */
+#endif /* __ASM_NDS32_IO_H */

67 lines not on this page · raw message

new file mode 100644
index 0000000..63dbeb7
@@ -0,0 +1,27 @@
+/*
+ * Copyright (C) 2005-2017 Andes Technology Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef ASMNDS32_DMA_MAPPING_H
+#define ASMNDS32_DMA_MAPPING_H
+
+extern struct dma_map_ops nds32_dma_ops;
+
+static inline struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus)
+{
+	return &nds32_dma_ops;
+}
+
+#endif

478 lines not on this page · raw message

new file mode 100644
index 0000000..a6e4c56
@@ -0,0 +1,192 @@
+/*
+ * Copyright (C) 2005-2017 Andes Technology Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __ASMNDS32_ELF_H
+#define __ASMNDS32_ELF_H
+
+/*
+ * ELF register definitions..
+ */
+
+#include <asm/ptrace.h>
+
+typedef unsigned long elf_greg_t;
+typedef unsigned long elf_freg_t[3];
+
+extern unsigned int elf_hwcap;
+
+#define EM_NDS32			167
+
+#define R_NDS32_NONE			0
+#define R_NDS32_16_RELA			19
+#define R_NDS32_32_RELA			20
+#define R_NDS32_9_PCREL_RELA		22
+#define R_NDS32_15_PCREL_RELA		23
+#define R_NDS32_17_PCREL_RELA		24
+#define R_NDS32_25_PCREL_RELA		25
+#define R_NDS32_HI20_RELA		26
+#define R_NDS32_LO12S3_RELA		27
+#define R_NDS32_LO12S2_RELA		28
+#define R_NDS32_LO12S1_RELA		29
+#define R_NDS32_LO12S0_RELA		30
+#define R_NDS32_SDA15S3_RELA    	31
+#define R_NDS32_SDA15S2_RELA    	32
+#define R_NDS32_SDA15S1_RELA    	33
+#define R_NDS32_SDA15S0_RELA    	34
+#define R_NDS32_GOT20			37
+#define R_NDS32_25_PLTREL		38
+#define R_NDS32_COPY			39
+#define R_NDS32_GLOB_DAT		40
+#define R_NDS32_JMP_SLOT		41
+#define R_NDS32_RELATIVE		42
+#define R_NDS32_GOTOFF			43
+#define R_NDS32_GOTPC20			44
+#define R_NDS32_GOT_HI20		45
+#define R_NDS32_GOT_LO12		46
+#define R_NDS32_GOTPC_HI20		47
+#define R_NDS32_GOTPC_LO12		48
+#define R_NDS32_GOTOFF_HI20		49
+#define R_NDS32_GOTOFF_LO12		50
+#define R_NDS32_INSN16			51
+#define R_NDS32_LABEL			52
+#define R_NDS32_LONGCALL1		53
+#define R_NDS32_LONGCALL2		54
+#define R_NDS32_LONGCALL3		55
+#define R_NDS32_LONGJUMP1		56
+#define R_NDS32_LONGJUMP2		57
+#define R_NDS32_LONGJUMP3		58
+#define R_NDS32_LOADSTORE		59
+#define R_NDS32_9_FIXED_RELA		60
+#define R_NDS32_15_FIXED_RELA		61
+#define R_NDS32_17_FIXED_RELA		62
+#define R_NDS32_25_FIXED_RELA		63
+#define R_NDS32_PLTREL_HI20		64
+#define R_NDS32_PLTREL_LO12		65
+#define R_NDS32_PLT_GOTREL_HI20		66
+#define R_NDS32_PLT_GOTREL_LO12		67
+#define R_NDS32_LO12S0_ORI_RELA		72
+#define R_NDS32_DWARF2_OP1_RELA     	77
+#define R_NDS32_DWARF2_OP2_RELA     	78
+#define R_NDS32_DWARF2_LEB_RELA     	79
+#define R_NDS32_WORD_9_PCREL_RELA	94
+#define R_NDS32_LONGCALL4 		107
+#define R_NDS32_RELA_NOP_MIX		192
+#define R_NDS32_RELA_NOP_MAX		255
+
+#define ELF_NGREG (sizeof (struct pt_regs) / sizeof(elf_greg_t))
+typedef elf_greg_t elf_gregset_t[ELF_NGREG];
+
+/* Core file format: The core file is written in such a way that gdb
+   can understand it and provide useful information to the user (under
+   linux we use the 'trad-core' bfd).  There are quite a number of
+   obstacles to being able to view the contents of the floating point
+   registers, and until these are solved you will not be able to view the
+   contents of them.  Actually, you can read in the core file and look at
+   the contents of the user struct to find out what the floating point
+   registers contain.
+   The actual file contents are as follows:
+   UPAGE: 1 page consisting of a user struct that tells gdb what is present
+   in the file.  Directly after this is a copy of the task_struct, which
+   is currently not used by gdb, but it may come in useful at some point.
+   All of the registers are stored as part of the upage.  The upage should
+   always be only one page.
+   DATA: The data area is stored.  We use current->end_text to
+   current->brk to pick up all of the user variables, plus any memory
+   that may have been malloced.  No attempt is made to determine if a page
+   is demand-zero or if a page is totally unused, we just cover the entire
+   range.  All of the addresses are rounded in such a way that an integral
+   number of pages is written.
+   STACK: We need the stack information in order to get a meaningful
+   backtrace.  We need to write the data from (esp) to
+   current->start_stack, so we round each of these off in order to be able
+   to write an integer number of pages.
+   The minimum core file size is 3 pages, or 12288 bytes.
+*/
+
+struct user_fp {
+	struct fp_reg {
+		unsigned int sign1:1;
+		unsigned int unused:15;
+		unsigned int sign2:1;
+		unsigned int exponent:14;
+		unsigned int j:1;
+		unsigned int mantissa1:31;
+		unsigned int mantissa0:32;
+	} fpregs[8];
+	unsigned int fpsr:32;
+	unsigned int fpcr:32;
+	unsigned char ftype[8];
+	unsigned int init_flag;
+};
+
+typedef struct user_fp elf_fpregset_t;
+
+struct elf32_hdr;
+#define elf_check_arch(x)		((x)->e_machine == EM_NDS32)
+
+/*
+ * These are used to set parameters in the core dumps.
+ */
+#define ELF_CLASS	ELFCLASS32
+#ifdef __NDS32_EB__
+#define ELF_DATA	ELFDATA2MSB;
+#else
+#define ELF_DATA	ELFDATA2LSB;
+#endif
+#define ELF_ARCH	EM_NDS32
+#define USE_ELF_CORE_DUMP
+#define ELF_EXEC_PAGESIZE	PAGE_SIZE
+
+/* This is the location that an ET_DYN program is loaded if exec'ed.  Typical
+   use of this is to invoke "./ld.so someprog" to test out a new version of
+   the loader.  We need to make sure that it is out of the way of the program
+   that it will "exec", and that there is sufficient room for the brk.  */
+
+#define ELF_ET_DYN_BASE	(2 * TASK_SIZE / 3)
+
+/* When the program starts, a1 contains a pointer to a function to be
+   registered with atexit, as per the SVR4 ABI.  A value of 0 means we
+   have no such handler.  */
+#define ELF_PLAT_INIT(_r, load_addr)	(_r)->uregs[0] = 0
+
+/* This yields a mask that user programs can use to figure out what
+   instruction set this cpu supports. */
+
+#define ELF_HWCAP	(elf_hwcap)
+
+#ifdef __KERNEL__
+
+#define ELF_PLATFORM    (NULL)
+
+/* Old NetWinder binaries were compiled in such a way that the iBCS
+   heuristic always trips on them.  Until these binaries become uncommon
+   enough not to care, don't trust the `ibcs' flag here.  In any case
+   there is no other ELF system currently supported by iBCS.
+   @@ Could print a warning message to encourage users to upgrade.  */
+#define SET_PERSONALITY(ex)	set_personality(PER_LINUX)
+
+#endif
+
+#define ARCH_DLINFO						\
+do {								\
+	NEW_AUX_ENT(AT_SYSINFO_EHDR,				\
+		    (elf_addr_t)current->mm->context.vdso);	\
+} while (0)
+#define ARCH_HAS_SETUP_ADDITIONAL_PAGES 1
+struct linux_binprm;
+int arch_setup_additional_pages(struct linux_binprm *, int);
+
+#endif

new file mode 100644
index 0000000..02e9757
@@ -0,0 +1,25 @@
+/*
+ * Copyright (C) 2005-2017 Andes Technology Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __ASM_AUXVEC_H
+#define __ASM_AUXVEC_H
+
+/* VDSO location */
+#define AT_SYSINFO_EHDR	33
+
+#define AT_VECTOR_SIZE_ARCH 1
+
+#endif

new file mode 100644
index 0000000..2e4527f3
@@ -0,0 +1,24 @@
+/*
+ * Copyright (C) 2005-2017 Andes Technology Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __ASM_NDS32_PARAM_H
+#define __ASM_NDS32_PARAM_H
+
+#define EXEC_PAGESIZE	8192
+
+#include <asm-generic/param.h>
+
+#endif /* __ASM_NDS32_PARAM_H */

new file mode 100644
index 0000000..3066bae
@@ -0,0 +1,203 @@
+/*
+ * Access to user system call parameters and results
+ *
+ * Copyright (C) 2008-2009 Red Hat, Inc.  All rights reserved.
+ * Copyright (C) 2005-2017 Andes Technology Corporation
+ *
+ * This copyrighted material is made available to anyone wishing to use,
+ * modify, copy, or redistribute it subject to the terms and conditions
+ * of the GNU General Public License v.2.
+ *
+ * This file is a stub providing documentation for what functions
+ * asm-ARCH/syscall.h files need to define.  Most arch definitions
+ * will be simple inlines.
+ *
+ * All of these functions expect to be called with no locks,
+ * and only when the caller is sure that the task of interest
+ * cannot return to user mode while we are looking at it.
+ */
+
+#ifndef _ASM_NDS32_SYSCALL_H
+#define _ASM_NDS32_SYSCALL_H	1
+
+#include <linux/err.h>
+struct task_struct;
+struct pt_regs;
+
+/**
+ * syscall_get_nr - find what system call a task is executing
+ * @task:	task of interest, must be blocked
+ * @regs:	task_pt_regs() of @task
+ *
+ * If @task is executing a system call or is at system call
+ * tracing about to attempt one, returns the system call number.
+ * If @task is not executing a system call, i.e. it's blocked
+ * inside the kernel for a fault or signal, returns -1.
+ *
+ * Note this returns int even on 64-bit machines.  Only 32 bits of
+ * system call number can be meaningful.  If the actual arch value
+ * is 64 bits, this truncates to 32 bits so 0xffffffff means -1.
+ *
+ * It's only valid to call this when @task is known to be blocked.
+ */
+int syscall_get_nr(struct task_struct *task, struct pt_regs *regs)
+{
+	return regs->syscallno;
+}
+
+/**
+ * syscall_rollback - roll back registers after an aborted system call
+ * @task:	task of interest, must be in system call exit tracing
+ * @regs:	task_pt_regs() of @task
+ *
+ * It's only valid to call this when @task is stopped for system
+ * call exit tracing (due to TIF_SYSCALL_TRACE or TIF_SYSCALL_AUDIT),
+ * after tracehook_report_syscall_entry() returned nonzero to prevent
+ * the system call from taking place.
+ *
+ * This rolls back the register state in @regs so it's as if the
+ * system call instruction was a no-op.  The registers containing
+ * the system call number and arguments are as they were before the
+ * system call instruction.  This may not be the same as what the
+ * register state looked like at system call entry tracing.
+ */
+void syscall_rollback(struct task_struct *task, struct pt_regs *regs)
+{
+	regs->uregs[0] = regs->orig_r0;
+}
+
+/**
+ * syscall_get_error - check result of traced system call
+ * @task:	task of interest, must be blocked
+ * @regs:	task_pt_regs() of @task
+ *
+ * Returns 0 if the system call succeeded, or -ERRORCODE if it failed.
+ *
+ * It's only valid to call this when @task is stopped for tracing on exit
+ * from a system call, due to %TIF_SYSCALL_TRACE or %TIF_SYSCALL_AUDIT.
+ */
+long syscall_get_error(struct task_struct *task, struct pt_regs *regs)
+{
+	unsigned long error = regs->uregs[0];
+	return IS_ERR_VALUE(error) ? error : 0;
+}
+
+/**
+ * syscall_get_return_value - get the return value of a traced system call
+ * @task:	task of interest, must be blocked
+ * @regs:	task_pt_regs() of @task
+ *
+ * Returns the return value of the successful system call.
+ * This value is meaningless if syscall_get_error() returned nonzero.
+ *
+ * It's only valid to call this when @task is stopped for tracing on exit
+ * from a system call, due to %TIF_SYSCALL_TRACE or %TIF_SYSCALL_AUDIT.
+ */
+long syscall_get_return_value(struct task_struct *task, struct pt_regs *regs)
+{
+	return regs->uregs[0];
+}
+
+/**
+ * syscall_set_return_value - change the return value of a traced system call
+ * @task:	task of interest, must be blocked
+ * @regs:	task_pt_regs() of @task
+ * @error:	negative error code, or zero to indicate success
+ * @val:	user return value if @error is zero
+ *
+ * This changes the results of the system call that user mode will see.
+ * If @error is zero, the user sees a successful system call with a
+ * return value of @val.  If @error is nonzero, it's a negated errno
+ * code; the user sees a failed system call with this errno code.
+ *
+ * It's only valid to call this when @task is stopped for tracing on exit
+ * from a system call, due to %TIF_SYSCALL_TRACE or %TIF_SYSCALL_AUDIT.
+ */
+void syscall_set_return_value(struct task_struct *task, struct pt_regs *regs,
+			      int error, long val)
+{
+	regs->uregs[0] = (long)error ? error : val;
+}
+
+/**
+ * syscall_get_arguments - extract system call parameter values
+ * @task:	task of interest, must be blocked
+ * @regs:	task_pt_regs() of @task
+ * @i:		argument index [0,5]
+ * @n:		number of arguments; n+i must be [1,6].
+ * @args:	array filled with argument values
+ *
+ * Fetches @n arguments to the system call starting with the @i'th argument
+ * (from 0 through 5).  Argument @i is stored in @args[0], and so on.
+ * An arch inline version is probably optimal when @i and @n are constants.
+ *
+ * It's only valid to call this when @task is stopped for tracing on
+ * entry to a system call, due to %TIF_SYSCALL_TRACE or %TIF_SYSCALL_AUDIT.
+ * It's invalid to call this with @i + @n > 6; we only support system calls
+ * taking up to 6 arguments.
+ */
+#define SYSCALL_MAX_ARGS 6
+void syscall_get_arguments(struct task_struct *task, struct pt_regs *regs,
+			   unsigned int i, unsigned int n, unsigned long *args)
+{
+	if (n == 0)
+		return;
+	if (i + n > SYSCALL_MAX_ARGS) {
+		unsigned long *args_bad = args + SYSCALL_MAX_ARGS - i;
+		unsigned int n_bad = n + i - SYSCALL_MAX_ARGS;
+		pr_warning("%s called with max args %d, handling only %d\n",
+			   __func__, i + n, SYSCALL_MAX_ARGS);
+		memset(args_bad, 0, n_bad * sizeof(args[0]));
+		memset(args_bad, 0, n_bad * sizeof(args[0]));
+	}
+
+	if (i == 0) {
+		args[0] = regs->orig_r0;
+		args++;
+		i++;
+		n--;
+	}
+
+	memcpy(args, &regs->uregs[0] + i, n * sizeof(args[0]));
+}
+
+/**
+ * syscall_set_arguments - change system call parameter value
+ * @task:	task of interest, must be in system call entry tracing
+ * @regs:	task_pt_regs() of @task
+ * @i:		argument index [0,5]
+ * @n:		number of arguments; n+i must be [1,6].
+ * @args:	array of argument values to store
+ *
+ * Changes @n arguments to the system call starting with the @i'th argument.
+ * Argument @i gets value @args[0], and so on.
+ * An arch inline version is probably optimal when @i and @n are constants.
+ *
+ * It's only valid to call this when @task is stopped for tracing on
+ * entry to a system call, due to %TIF_SYSCALL_TRACE or %TIF_SYSCALL_AUDIT.
+ * It's invalid to call this with @i + @n > 6; we only support system calls
+ * taking up to 6 arguments.
+ */
+void syscall_set_arguments(struct task_struct *task, struct pt_regs *regs,
+			   unsigned int i, unsigned int n,
+			   const unsigned long *args)
+{
+	if (n == 0)
+		return;
+
+	if (i + n > SYSCALL_MAX_ARGS) {
+		pr_warn("%s called with max args %d, handling only %d\n",
+			__func__, i + n, SYSCALL_MAX_ARGS);
+		n = SYSCALL_MAX_ARGS - i;
+	}
+
+	if (i == 0) {
+		regs->orig_r0 = args[0];
+		args++;
+		i++;
+		n--;
+	}
+
+	memcpy(&regs->uregs[0] + i, args, n * sizeof(args[0]));
+}
+#endif /* _ASM_NDS32_SYSCALL_H */

new file mode 100644
index 0000000..741ccdc
@@ -0,0 +1,27 @@
+/*
+ * Copyright (C) 2005-2017 Andes Technology Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __ASM_NDS32_SYSCALLS_H
+#define __ASM_NDS32_SYSCALLS_H
+
+int sys_cacheflush(unsigned long addr, unsigned long len, unsigned int op);
+long sys_fadvise64_64_wrapper(int fd, int advice, loff_t offset, loff_t len);
+asmlinkage int sys_syscall(void);
+asmlinkage int sys_rt_sigreturn_wrapper(void);
+
+#include <asm-generic/syscalls.h>
+
+#endif /* __ASM_NDS32_SYSCALLS_H */

new file mode 100644
index 0000000..b30adca
@@ -0,0 +1,21 @@
+/*
+ * Copyright (C) 2005-2017 Andes Technology Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#define __ARCH_WANT_SYS_LLSEEK
+#define __ARCH_WANT_SYS_CLONE
+#define __ARCH_WANT_SYS_OLD_MMAP
+
+#include <uapi/asm/unistd.h>

new file mode 100644
index 0000000..01b466d
@@ -0,0 +1,36 @@
+/*
+ * Copyright (C) 2005-2017 Andes Technology Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#define __ARCH_WANT_RENAMEAT
+#define __ARCH_WANT_SYSCALL_OFF_T
+
+/* Use the standard ABI for syscalls */
+#include <asm-generic/unistd.h>
+
+/* Additional NDS32 specific syscalls. */
+#define __NR_cacheflush		(__NR_arch_specific_syscall)
+#define __NR_syscall		(__NR_arch_specific_syscall + 1)
+#define __NR_ipc		(__NR_arch_specific_syscall + 2)
+#define __NR_sysfs		(__NR_arch_specific_syscall + 3)
+#define __NR__llseek             __NR_llseek
+__SYSCALL(__NR_cacheflush, sys_cacheflush)
+__SYSCALL(__NR_syscall, sys_syscall)
+__SYSCALL(__NR_ipc, sys_ipc)
+__SYSCALL(__NR_sysfs, sys_sysfs)
+
+__SYSCALL(__NR_fadvise64_64, sys_fadvise64_64_wrapper)
+__SYSCALL(__NR_rt_sigreturn, sys_rt_sigreturn_wrapper)
+__SYSCALL(__NR_mmap, sys_old_mmap)

63 lines not on this page · raw message

new file mode 100644
index 0000000..bafd896
@@ -0,0 +1,28 @@
+/*
+ * Copyright (C) 2005-2017 Andes Technology Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <linux/syscalls.h>
+#include <linux/signal.h>
+#include <linux/unistd.h>
+#include <asm/syscalls.h>
+
+#undef __SYSCALL
+#define __SYSCALL(nr, call) [nr] = (call),
+
+void *sys_call_table[__NR_syscalls] __aligned(8192) = {
+	[0 ... __NR_syscalls - 1] = sys_ni_syscall,
+#include <asm/unistd.h>
+};

new file mode 100644
index 0000000..7298c49
@@ -0,0 +1,35 @@
+/*
+ * Copyright (C) 2005-2017 Andes Technology Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __ASM_VDSO_H
+#define __ASM_VDSO_H
+
+#ifdef __KERNEL__
+
+#ifndef __ASSEMBLY__
+
+#include <generated/vdso-offsets.h>
+
+#define VDSO_SYMBOL(base, name)						   \
+({									   \
+	(unsigned long)(vdso_offset_##name + (unsigned long)(base)); \
+})
+
+#endif /* !__ASSEMBLY__ */
+
+#endif /* __KERNEL__ */
+
+#endif /* __ASM_VDSO_H */

51 lines not on this page · raw message

243 lines not on this page · raw message

260 lines not on this page · raw message

new file mode 100644
index 0000000..1c0dfcb
@@ -0,0 +1,73 @@
+/*
+ * Copyright (C) 2005-2017 Andes Technology Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef _ASMNDS32_SIGCONTEXT_H
+#define _ASMNDS32_SIGCONTEXT_H
+
+/*
+ * Signal context structure - contains all info to do with the state
+ * before the signal handler was invoked.  Note: only add new entries
+ * to the end of the structure.
+ */
+
+struct zol_struct {
+	unsigned long nds32_lc;	/* $LC */
+	unsigned long nds32_le;	/* $LE */
+	unsigned long nds32_lb;	/* $LB */
+};
+
+struct sigcontext {
+	unsigned long trap_no;
+	unsigned long error_code;
+	unsigned long oldmask;
+	unsigned long nds32_r0;
+	unsigned long nds32_r1;
+	unsigned long nds32_r2;
+	unsigned long nds32_r3;
+	unsigned long nds32_r4;
+	unsigned long nds32_r5;
+	unsigned long nds32_r6;
+	unsigned long nds32_r7;
+	unsigned long nds32_r8;
+	unsigned long nds32_r9;
+	unsigned long nds32_r10;
+	unsigned long nds32_r11;
+	unsigned long nds32_r12;
+	unsigned long nds32_r13;
+	unsigned long nds32_r14;
+	unsigned long nds32_r15;
+	unsigned long nds32_r16;
+	unsigned long nds32_r17;
+	unsigned long nds32_r18;
+	unsigned long nds32_r19;
+	unsigned long nds32_r20;
+	unsigned long nds32_r21;
+	unsigned long nds32_r22;
+	unsigned long nds32_r23;
+	unsigned long nds32_r24;
+	unsigned long nds32_r25;
+	unsigned long nds32_fp;	/* $r28 */
+	unsigned long nds32_gp;	/* $r29 */
+	unsigned long nds32_lp;	/* $r30 */
+	unsigned long nds32_sp;	/* $r31 */
+	unsigned long nds32_ipc;
+	unsigned long fault_address;
+	unsigned long used_math_flag;
+	/* FPU Registers */
+	struct zol_struct zol;
+};
+
+#endif

new file mode 100644
index 0000000..5ef6915
@@ -0,0 +1,23 @@
+/*
+ * Copyright (C) 2005-2017 Andes Technology Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef _ASMNDS32_SIGNAL_H
+#define _ASMNDS32_SIGNAL_H
+
+#define SA_RESTORER	0x04000000
+
+#include <asm-generic/signal.h>
+#endif

370 lines not on this page · raw message

new file mode 100644
index 0000000..cf4d4b8
@@ -0,0 +1,30 @@
+/*
+ * Copyright (C) 2005-2017 Andes Technology Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __ASM_NDS32_STRING_H
+#define __ASM_NDS32_STRING_H
+
+#define __HAVE_ARCH_MEMCPY
+extern void *memcpy(void *, const void *, __kernel_size_t);
+
+#define __HAVE_ARCH_MEMMOVE
+extern void *memmove(void *, const void *, __kernel_size_t);
+
+#define __HAVE_ARCH_MEMSET
+extern void *memset(void *, int, __kernel_size_t);
+
+extern void *memzero(void *ptr, __kernel_size_t n);
+#endif

48 lines not on this page · raw message

385 lines not on this page · raw message

54 lines not on this page · raw message

new file mode 100644
index 0000000..20f9718
@@ -0,0 +1,42 @@
+/*
+ * Copyright (C) 2005-2017 Andes Technology Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __UAPI_ASM_NDS32_PTRACE_H
+#define __UAPI_ASM_NDS32_PTRACE_H
+
+#ifndef __ASSEMBLY__
+
+/*
+ * User structures for general purpose register.
+ */
+struct user_pt_regs {
+	long uregs[26];
+	long fp;
+	long gp;
+	long lp;
+	long sp;
+	long ipc;
+#if defined(CONFIG_HWZOL)
+	long lb;
+	long le;
+	long lc;
+#else
+	long dummy[3];
+#endif
+	long syscallno;
+};
+#endif
+#endif

325 lines not on this page · raw message

new file mode 100644
index 0000000..b8530bd
@@ -0,0 +1,158 @@
+/*
+ * Copyright (C) 2005-2017 Andes Technology Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef L2_CACHE_H
+#define L2_CACHE_H
+
+/* This is defined for head.S to use due to device tree is not yet built. */
+#define L2CC_PA_BASE		0x90F00000
+
+/* CCTL_CMD_OP */
+#define L2_CA_CONF_OFF		0x0
+#define	L2_IF_CONF_OFF		0x4
+#define L2CC_SETUP_OFF		0x8
+#define L2CC_PROT_OFF		0xC
+#define L2CC_CTRL_OFF		0x10
+#define L2_INT_EN_OFF           0x20
+#define L2_STA_OFF              0x24
+#define RDERR_ADDR_OFF		0x28
+#define WRERR_ADDR_OFF		0x2c
+#define EVDPTERR_ADDR_OFF	0x30
+#define IMPL3ERR_ADDR_OFF	0x34
+#define L2_CNT0_CTRL_OFF        0x40
+#define L2_EVNT_CNT0_OFF        0x44
+#define L2_CNT1_CTRL_OFF        0x48
+#define L2_EVNT_CNT1_OFF        0x4c
+#define L2_CCTL_CMD_OFF		0x60
+#define L2_CCTL_STATUS_OFF	0x64
+#define L2_LINE_TAG_OFF		0x68
+#define L2_LINE_DPT_OFF		0x70
+
+#define CCTL_CMD_L2_IX_INVAL    0x0
+#define CCTL_CMD_L2_PA_INVAL    0x1
+#define CCTL_CMD_L2_IX_WB       0x2
+#define CCTL_CMD_L2_PA_WB       0x3
+#define CCTL_CMD_L2_PA_WBINVAL  0x5
+#define CCTL_CMD_L2_SYNC        0xa
+
+/* CCTL_CMD_TYPE */
+#define CCTL_SINGLE_CMD         0
+#define CCTL_BLOCK_CMD          0x10
+#define CCTL_ALL_CMD		0x10
+
+/******************************************************************************
+ * L2_CA_CONF (Cache architecture configuration)
+ *****************************************************************************/
+#define L2_CA_CONF_offL2SET		0
+#define L2_CA_CONF_offL2WAY		4
+#define L2_CA_CONF_offL2CLSZ            8
+#define L2_CA_CONF_offL2DW		11
+#define L2_CA_CONF_offL2PT		14
+#define L2_CA_CONF_offL2VER		16
+
+#define L2_CA_CONF_mskL2SET	(0xFUL << L2_CA_CONF_offL2SET)
+#define L2_CA_CONF_mskL2WAY	(0xFUL << L2_CA_CONF_offL2WAY)
+#define L2_CA_CONF_mskL2CLSZ    (0x7UL << L2_CA_CONF_offL2CLSZ)
+#define L2_CA_CONF_mskL2DW	(0x7UL << L2_CA_CONF_offL2DW)
+#define L2_CA_CONF_mskL2PT	(0x3UL << L2_CA_CONF_offL2PT)
+#define L2_CA_CONF_mskL2VER	(0xFFFFUL << L2_CA_CONF_offL2VER)
+
+/******************************************************************************
+ * L2CC_SETUP (L2CC Setup register)
+ *****************************************************************************/
+#define L2CC_SETUP_offPART              0
+#define L2CC_SETUP_mskPART              (0x3UL << L2CC_SETUP_offPART)
+#define L2CC_SETUP_offDDLATC            4
+#define L2CC_SETUP_mskDDLATC            (0x3UL << L2CC_SETUP_offDDLATC)
+#define L2CC_SETUP_offTDLATC            8
+#define L2CC_SETUP_mskTDLATC            (0x3UL << L2CC_SETUP_offTDLATC)
+
+/******************************************************************************
+ * L2CC_PROT (L2CC Protect register)
+ *****************************************************************************/
+#define L2CC_PROT_offMRWEN              31
+#define L2CC_PROT_mskMRWEN      (0x1UL << L2CC_PROT_offMRWEN)
+
+/******************************************************************************
+ * L2_CCTL_STATUS_Mn (The L2CCTL command working status for Master n)
+ *****************************************************************************/
+#define L2CC_CTRL_offEN                 31
+#define L2CC_CTRL_mskEN                 (0x1UL << L2CC_CTRL_offEN)
+
+/******************************************************************************
+ * L2_CCTL_STATUS_Mn (The L2CCTL command working status for Master n)
+ *****************************************************************************/
+#define L2_CCTL_STATUS_offCMD_COMP      31
+#define L2_CCTL_STATUS_mskCMD_COMP      (0x1 << L2_CCTL_STATUS_offCMD_COMP)
+
+#ifndef __ASSEMBLY__
+extern void __iomem *atl2c_base;
+
+#include <linux/smp.h>
+#include <asm/io.h>
+#include <asm/bitfield.h>
+
+#define L2C_R_REG(offset)               __raw_readl(atl2c_base + offset)
+#define L2C_W_REG(offset, value)        __raw_writel(value, atl2c_base + offset)
+
+#define L2_CMD_RDY()    \
+        do{;}while((L2C_R_REG(L2_CCTL_STATUS_OFF) & L2_CCTL_STATUS_mskCMD_COMP) == 0)
+
+static inline unsigned long L2_CACHE_SET(void)
+{
+	return 64 << ((L2C_R_REG(L2_CA_CONF_OFF) & L2_CA_CONF_mskL2SET) >>
+		      L2_CA_CONF_offL2SET);
+}
+
+static inline unsigned long L2_CACHE_WAY(void)
+{
+	return 1 +
+	    ((L2C_R_REG(L2_CA_CONF_OFF) & L2_CA_CONF_mskL2WAY) >>
+	     L2_CA_CONF_offL2WAY);
+}
+
+static inline unsigned long L2_CACHE_LINE_SIZE(void)
+{
+
+	return 4 << ((L2C_R_REG(L2_CA_CONF_OFF) & L2_CA_CONF_mskL2CLSZ) >>
+		     L2_CA_CONF_offL2CLSZ);
+}
+
+static inline unsigned long GET_L2CC_CTRL_CPU(unsigned long cpu)
+{
+	if (cpu == smp_processor_id())
+		return L2C_R_REG(L2CC_CTRL_OFF);
+	return L2C_R_REG(L2CC_CTRL_OFF + (cpu << 8));
+}
+
+static inline void SET_L2CC_CTRL_CPU(unsigned long cpu, unsigned long val)
+{
+	if (cpu == smp_processor_id())
+		L2C_W_REG(L2CC_CTRL_OFF, val);
+	else
+		L2C_W_REG(L2CC_CTRL_OFF + (cpu << 8), val);
+}
+
+static inline unsigned long GET_L2CC_STATUS_CPU(unsigned long cpu)
+{
+	if (cpu == smp_processor_id())
+		return L2C_R_REG(L2_CCTL_STATUS_OFF);
+	return L2C_R_REG(L2_CCTL_STATUS_OFF + (cpu << 8));
+}
+
+#endif
+
+#endif

77 lines not on this page · raw message

new file mode 100644
index 0000000..5ed2b75
@@ -0,0 +1,24 @@
+/*
+ * Copyright (C) 2005-2017 Andes Technology Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef _ASM_NDS32_MODULE_H
+#define _ASM_NDS32_MODULE_H
+
+#include <asm-generic/module.h>
+
+#define MODULE_ARCH_VERMAGIC	"NDS32v3"
+
+#endif /* _ASM_NDS32_MODULE_H */

299 lines not on this page · raw message

new file mode 100644
index 0000000..96e2f87
@@ -0,0 +1,22 @@
+/*
+ * Copyright (C) 2005-2017 Andes Technology Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <linux/clocksource.h>
+
+void __init time_init(void)
+{
+	timer_probe();
+}

45 lines not on this page · raw message

new file mode 100644
index 0000000..bdeeb76
@@ -0,0 +1,51 @@
+/*
+ * Copyright (C) 2005-2017 Andes Technology Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __NDS32_DELAY_H__
+#define __NDS32_DELAY_H__
+
+#include <asm/param.h>
+
+static inline void __delay(unsigned long loops)
+{
+	__asm__ __volatile__(".align 2\n"
+			     "1:\n"
+			     "\taddi\t%0, %0, -1\n"
+			     "\tbgtz\t%0, 1b\n"
+			     :"=r"(loops)
+			     :"0"(loops));
+}
+
+static inline void __udelay(unsigned long usecs, unsigned long lpj)
+{
+	usecs *= (unsigned long)(((0x8000000000000000ULL / (500000 / HZ)) +
+				  0x80000000ULL) >> 32);
+	usecs = (unsigned long)(((unsigned long long)usecs * lpj) >> 32);
+	__delay(usecs);
+}
+
+#define udelay(usecs) __udelay((usecs), loops_per_jiffy)
+
+/* make sure "usecs *= ..." in udelay do not overflow. */
+#if HZ >= 1000
+#define MAX_UDELAY_MS	1
+#elif HZ <= 200
+#define MAX_UDELAY_MS	5
+#else
+#define MAX_UDELAY_MS	(1000 / HZ)
+#endif
+
+#endif

new file mode 100644
index 0000000..d17abd8
@@ -0,0 +1,24 @@
+/*
+ * Copyright (C) 2005-2017 Andes Technology Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __ASM_LINKAGE_H
+#define __ASM_LINKAGE_H
+
+/* This file is required by include/linux/linkage.h */
+#define __ALIGN .align 2
+#define __ALIGN_STR ".align 2"
+
+#endif

new file mode 100644
index 0000000..198e8dd
@@ -0,0 +1,26 @@
+/*
+ * Copyright (C) 2005-2017 Andes Technology Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __NDS32_BYTEORDER_H__
+#define __NDS32_BYTEORDER_H__
+
+#ifdef __NDS32_EB__
+#include <linux/byteorder/big_endian.h>
+#else
+#include <linux/byteorder/little_endian.h>
+#endif
+
+#endif /* __NDS32_BYTEORDER_H__ */

41 lines not on this page · raw message

149 lines not on this page · raw message