PPC4xx: Move/rename ECC POST for 440EPx/GRx

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-/*
- * (C) Copyright 2007
- * Developed for DENX Software Engineering GmbH.
- *
- * Author: Pavel Kolesnikov <[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
- */
-
-/* define DEBUG for debugging output (obviously ;-)) */
-#if 0
-#define DEBUG
-#endif
-
-#include <common.h>
-#include <watchdog.h>
-
-#ifdef CONFIG_POST
-
-#include <post.h>
-
-#if CONFIG_POST & CFG_POST_ECC
-
-/*
- * MEMORY ECC test
- *
- * This test performs the checks ECC facility of memory.
- */
-#include <asm/processor.h>
-#include <asm/mmu.h>
-#include <asm/io.h>
-#include <ppc440.h>
-
-#include "../../../board/lwmon5/sdram.h"
-
-DECLARE_GLOBAL_DATA_PTR;
-
-const static unsigned char syndrome_codes[] = {
-	0xF4, 0XF1, 0XEC ,0XEA, 0XE9, 0XE6, 0XE5, 0XE3,
-	0XDC, 0XDA, 0XD9, 0XD6, 0XD5, 0XD3, 0XCE, 0XCB,
-	0xB5, 0XB0, 0XAD, 0XAB, 0XA8, 0XA7, 0XA4, 0XA2,
-	0X9D, 0X9B, 0X98, 0X97, 0X94, 0X92, 0X8F, 0X8A,
-	0x75, 0x70, 0X6D, 0X6B, 0X68, 0X67, 0X64, 0X62,
-	0X5E, 0X5B, 0X58, 0X57, 0X54, 0X52, 0X4F, 0X4A,
-	0x34, 0x31, 0X2C, 0X2A, 0X29, 0X26, 0X25, 0X23,
-	0X1C, 0X1A, 0X19, 0X16, 0X15, 0X13, 0X0E, 0X0B,
-	0x80, 0x40, 0x20, 0x10, 0x08, 0x04, 0x02, 0x01
-};
-
-#define ECC_START_ADDR		0x10
-#define ECC_STOP_ADDR		0x2000
-#define ECC_PATTERN		0x0101010101010101ull
-#define ECC_PATTERN_CORR	0x0101010101010100ull
-#define ECC_PATTERN_UNCORR	0x010101010101010Full
-
-static int test_ecc_error(void)
-{
-	unsigned long value;
-	unsigned long hdata, ldata, haddr, laddr;
-	unsigned int bit;
-
-	int ret = 0;
-
-	mfsdram(DDR0_23, value);
-
-	for (bit = 0; bit < sizeof(syndrome_codes); bit++)
-		if (syndrome_codes[bit] == ((value >> 16) & 0xff))
-			break;
-
-	mfsdram(DDR0_00, value);
-
-	if (value & DDR0_00_INT_STATUS_BIT0) {
-		debug("Bit0. A single access outside the defined PHYSICAL"
-		      " memory space detected\n");
-		mfsdram(DDR0_32, laddr);
-		mfsdram(DDR0_33, haddr);
-		debug("        addr = 0x%08x%08x\n", haddr, laddr);
-		ret = 1;
-	}
-	if (value & DDR0_00_INT_STATUS_BIT1) {
-		debug("Bit1. Multiple accesses outside the defined PHYSICAL"
-		      " memory space detected\n");
-		ret = 2;
-	}
-	if (value & DDR0_00_INT_STATUS_BIT2) {
-		debug("Bit2. Single correctable ECC event detected\n");
-		mfsdram(DDR0_38, laddr);
-		mfsdram(DDR0_39, haddr);
-		mfsdram(DDR0_40, ldata);
-		mfsdram(DDR0_41, hdata);
-		debug("        0x%08x - 0x%08x%08x, bit - %d\n",
-		      laddr, hdata, ldata, bit);
-		ret = 3;
-	}
-	if (value & DDR0_00_INT_STATUS_BIT3) {
-		debug("Bit3. Multiple correctable ECC events detected\n");
-		mfsdram(DDR0_38, laddr);
-		mfsdram(DDR0_39, haddr);
-		mfsdram(DDR0_40, ldata);
-		mfsdram(DDR0_41, hdata);
-		debug("        0x%08x - 0x%08x%08x, bit - %d\n",
-		      laddr, hdata, ldata, bit);
-		ret = 4;
-	}
-	if (value & DDR0_00_INT_STATUS_BIT4) {
-		debug("Bit4. Single uncorrectable ECC event detected\n");
-		mfsdram(DDR0_34, laddr);
-		mfsdram(DDR0_35, haddr);
-		mfsdram(DDR0_36, ldata);
-		mfsdram(DDR0_37, hdata);
-		debug("        0x%08x - 0x%08x%08x, bit - %d\n",
-		      laddr, hdata, ldata, bit);
-		ret = 5;
-	}
-	if (value & DDR0_00_INT_STATUS_BIT5) {
-		debug("Bit5. Multiple uncorrectable ECC events detected\n");
-		mfsdram(DDR0_34, laddr);
-		mfsdram(DDR0_35, haddr);
-		mfsdram(DDR0_36, ldata);
-		mfsdram(DDR0_37, hdata);
-		debug("        0x%08x - 0x%08x%08x, bit - %d\n",
-		      laddr, hdata, ldata, bit);
-		ret = 6;
-	}
-	if (value & DDR0_00_INT_STATUS_BIT6) {
-		debug("Bit6. DRAM initialization complete\n");
-		ret = 7;
-	}
-
-	/* error status cleared */
-	mfsdram(DDR0_00, value);
-	mtsdram(DDR0_00, value | DDR0_00_INT_ACK_ALL);
-
-	return ret;
-}
-
-static int test_ecc(unsigned long ecc_addr)
-{
-	volatile unsigned long long *ecc_mem;
-	unsigned long value;
-	unsigned long ecc_data;
-	volatile unsigned long *lecc_mem;
-	int pret, ret = 0;
-
-	sync();
-	eieio();
-	WATCHDOG_RESET();
-
-	ecc_mem = (unsigned long long *)ecc_addr;
-	lecc_mem = (ulong *)ecc_addr;
-	*ecc_mem = ECC_PATTERN;
-	pret = test_ecc_error();
-	if (pret != 0)
-		ret = 1;
-
-	/* disconnect ecc */
-	mfsdram(DDR0_22, value);
-	mtsdram(DDR0_22, (value &~ DDR0_22_CTRL_RAW_MASK)
-		| DDR0_22_CTRL_RAW_ECC_DISABLE);
-
-	/* injecting error */
-	*ecc_mem = ECC_PATTERN_CORR;
-
-	/* enable ecc */
-	mfsdram(DDR0_22, value);
-	mtsdram(DDR0_22, (value &~ DDR0_22_CTRL_RAW_MASK)
-		| DDR0_22_CTRL_RAW_ECC_ENABLE);
-
-	ecc_data = *lecc_mem;
-	pret = test_ecc_error();
-	/* if read data ok, 1 correctable error must be fixed */
-	if (pret != 3)
-		ret = 1;
-
-	/* test for uncorrectable error */
-	/* disconnect from ecc storage */
-	mfsdram(DDR0_22, value);
-	mtsdram(DDR0_22, (value &~ DDR0_22_CTRL_RAW_MASK)
-		| DDR0_22_CTRL_RAW_NO_ECC_RAM);
-
-	/* injecting multiply bit error */
-
-	*ecc_mem = ECC_PATTERN_UNCORR;
-
-	/* enable ecc */
-	mfsdram(DDR0_22, value);
-	mtsdram(DDR0_22, (value &~ DDR0_22_CTRL_RAW_MASK)
-		| DDR0_22_CTRL_RAW_ECC_ENABLE);
-
-	ecc_data = *lecc_mem;
-	/* what the data should be read? */
-
-	pret = test_ecc_error();
-	/* info about uncorrectable error must appear */
-	if (pret != 5)
-		ret = 1;
-
-	sync();
-	eieio();
-
-	return ret;
-}
-
-int ecc_post_test (int flags)
-{
-	int ret = 0;
-	unsigned long value;
-	unsigned long iaddr;
-
-#if CONFIG_DDR_ECC
-	sync();
-	eieio();
-
-	/* mask all int */
-	mfsdram(DDR0_01, value);
-	mtsdram(DDR0_01, (value &~ DDR0_01_INT_MASK_MASK)
-		| DDR0_01_INT_MASK_ALL_OFF);
-
-	/* clear error status */
-	mfsdram(DDR0_00, value);
-	mtsdram(DDR0_00, value | DDR0_00_INT_ACK_ALL);
-
-	/* enable full support of ECC */
-	mfsdram(DDR0_22, value);
-	mtsdram(DDR0_22, (value &~ DDR0_22_CTRL_RAW_MASK)
-		| DDR0_22_CTRL_RAW_ECC_ENABLE);
-
-	for (iaddr = ECC_START_ADDR; iaddr < ECC_STOP_ADDR; iaddr += iaddr) {
-		ret = test_ecc(iaddr);
-		if (ret)
-			break;
-	}
-
-	/* clear error status */
-	mfsdram(DDR0_00, value);
-	mtsdram(DDR0_00, value | DDR0_00_INT_ACK_ALL);
-
-	/*
-	 * Clear possible errors resulting from ECC testing.
-	 * If not done, then we could get an interrupt later on when
-	 * exceptions are enabled.
-	 */
-	set_mcsr(get_mcsr());
-#endif
-
-	return ret;
-
-}
-
-#endif /* CONFIG_POST & CFG_POST_ECC */
-#endif /* CONFIG_POST */

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