Signed-off-by: Larry Johnson lrj@acm.org --- post/board/lwmon5/ecc.c | 267 ------------------------------------------ post/cpu/ppc4xx/denali_ecc.c | 267 ++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 267 insertions(+), 267 deletions(-) delete mode 100644 post/board/lwmon5/ecc.c create mode 100644 post/cpu/ppc4xx/denali_ecc.c
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 */ diff --git a/post/cpu/ppc4xx/denali_ecc.c b/post/cpu/ppc4xx/denali_ecc.c new file mode 100644 index 0000000..3fa3ba6 --- /dev/null +++ b/post/cpu/ppc4xx/denali_ecc.c @@ -0,0 +1,267 @@ +/* + * (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 */