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add print_cpuinfo to s3c24x0

PATCH In review David Müller 2 participants 4 messages Dec 3, 2010 – Dec 19, 2011 Arm (32-bit)

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David Müller

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#0 lore raw

PATCH 1/1 add print_cpuinfo to s3c24x0

Hello

This patch adds support for "print_cpuinfo" on Samsung s3c24x0 based targets. If activated by "#define CONFIG_DISPLAY_CPUINFO", the chip ID and the 3 main cpu frequencies will be displayed.

Dave

Signed-off-by David M??ller <[email protected]>
arch/arm/cpu/arm920t/s3c24x0/Makefile +1 -0
index bd53724..0029700 100644
@@ -26,6 +26,7 @@ include $(TOPDIR)/config.mk
 LIB	= $(obj)lib$(SOC).o
 
 COBJS-$(CONFIG_USE_IRQ) += interrupts.o
+COBJS-$(CONFIG_DISPLAY_CPUINFO)	+= cpu_info.o
 COBJS-y	+= speed.o
 COBJS-y	+= timer.o
 COBJS-y	+= usb.o
arch/arm/cpu/arm920t/s3c24x0/cpu_info.c new file +54 -0

54 lines not on this page · raw message

#3 lore raw

PATCH 1/1 add print_cpuinfo to s3c24x0

In reply to David Müller

Hi David,

Le 03/12/2010 16:12, David M?ller a ?crit :

Quoted 72 lines

Hello

This patch adds support for "print_cpuinfo" on Samsung s3c24x0 based targets. If activated by "#define CONFIG_DISPLAY_CPUINFO", the chip ID and the 3 main cpu frequencies will be displayed.

Dave

Signed-off-by David M??ller<[email protected]>
arch/arm/cpu/arm920t/s3c24x0/Makefile +1 -0
index bd53724..0029700 100644
@@ -26,6 +26,7 @@ include $(TOPDIR)/config.mk
  LIB	= $(obj)lib$(SOC).o
 
  COBJS-$(CONFIG_USE_IRQ) += interrupts.o
+COBJS-$(CONFIG_DISPLAY_CPUINFO)	+= cpu_info.o
  COBJS-y	+= speed.o
  COBJS-y	+= timer.o
  COBJS-y	+= usb.o
arch/arm/cpu/arm920t/s3c24x0/cpu_info.c new file +44 -0
new file mode 100644
index 0000000..14c5c6a
@@ -0,0 +1,54 @@
+/*
+ * (C) Copyright 2010
+ * David Mueller<[email protected]>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * 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, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include<common.h>
+#include<asm/io.h>
+#include<asm/arch/s3c24x0_cpu.h>
+
+typedef ulong (*getfreq)(void);
+
+static const getfreq freq_f[] = {
+	get_FCLK,
+	get_HCLK,
+	get_PCLK,
+};
+
+static const char freq_c[] = { 'F', 'H', 'P' };
+
+int print_cpuinfo(void)
+{
+	int i;
+	char buf[32];
+/* the S3C2400 seems to be lacking a CHIP ID register */
+#ifndef CONFIG_S3C2400
+	ulong cpuid;

arch/arm/cpu/arm920t/s3c24x0/cpu_info.c line 54

Quoted 10 lines
arch/arm/cpu/arm920t/s3c24x0/cpu_info.c new file +10 -0
+	struct s3c24x0_gpio * const gpio = s3c24x0_get_base_gpio();
+
+	cpuid = readl(&gpio->gstatus1);
+	printf("CPUID: %8lX\n", cpuid);
+#endif
+	for (i = 0; i<  ARRAY_SIZE(freq_f); i++)
+		printf("%cCLK: %8s MHz\n", freq_c[i], strmhz(buf, freq_f[i]()));
+
+	return 0;
+}

For some reason and despite David's pings, I'd missed this roughly one-year-old patch. Applied to u-boot-arm/master, with apologies for the delay. :(

Note:

include/configs/VCMA9.h:/* to be activated as soon as s3c24x0 has print_cpuinfo
include/configs/smdk2410.h:/* may be activated as soon as s3c24x0 has print_cpuinfo

Amicalement,

Signature · 1 line
Albert.