summaryrefslogtreecommitdiff
path: root/post/board/lwmon5
diff options
context:
space:
mode:
Diffstat (limited to 'post/board/lwmon5')
-rw-r--r--post/board/lwmon5/ecc.c267
1 files changed, 0 insertions, 267 deletions
diff --git a/post/board/lwmon5/ecc.c b/post/board/lwmon5/ecc.c
deleted file mode 100644
index 3fa3ba6..0000000
--- a/post/board/lwmon5/ecc.c
+++ /dev/null
@@ -1,267 +0,0 @@
-/*
- * (C) Copyright 2007
- * Developed for DENX Software Engineering GmbH.
- *
- * Author: Pavel Kolesnikov <concord@emcraft.com>
- *
- * 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 */
generated by cgit v1.1 at 2024-12-02 03:50:35 +0000