diff options
| -rw-r--r-- | board/lwmon5/lwmon5.c | 11 | ||||
| -rw-r--r-- | include/configs/lwmon5.h | 8 | ||||
| -rw-r--r-- | include/post.h | 1 | ||||
| -rw-r--r-- | post/board/lwmon5/Makefile | 29 | ||||
| -rw-r--r-- | post/board/lwmon5/ecc.c | 257 | ||||
| -rw-r--r-- | post/tests.c | 13 |
6 files changed, 318 insertions, 1 deletions
diff --git a/board/lwmon5/lwmon5.c b/board/lwmon5/lwmon5.c index d916284..b7dbba3 100644 --- a/board/lwmon5/lwmon5.c +++ b/board/lwmon5/lwmon5.c @@ -463,3 +463,14 @@ void hw_watchdog_reset(void) val = gpio_read_out_bit(CFG_GPIO_WATCHDOG) == 0 ? 1 : 0; gpio_write_bit(CFG_GPIO_WATCHDOG, val); } + +#ifdef CONFIG_POST +/* + * Returns 1 if keys pressed to start the power-on long-running tests + * Called from board_init_f(). + */ +int post_hotkeys_pressed(void) +{ + return (ctrlc()); +} +#endif diff --git a/include/configs/lwmon5.h b/include/configs/lwmon5.h index c4b7c4e..36ead23 100644 --- a/include/configs/lwmon5.h +++ b/include/configs/lwmon5.h @@ -74,11 +74,13 @@ /* 440EPx/440GRx have 16KB of internal SRAM, so no need for D-Cache */ #define CFG_INIT_RAM_OCM 1 /* OCM as init ram */ #define CFG_INIT_RAM_ADDR CFG_OCM_BASE /* OCM */ +#define CFG_OCM_DATA_ADDR CFG_OCM_BASE #define CFG_INIT_RAM_END (4 << 10) #define CFG_GBL_DATA_SIZE 256 /* num bytes initial data */ #define CFG_GBL_DATA_OFFSET (CFG_INIT_RAM_END - CFG_GBL_DATA_SIZE) -#define CFG_INIT_SP_OFFSET CFG_GBL_DATA_OFFSET +#define CFG_POST_WORD_ADDR (CFG_GBL_DATA_OFFSET - 0x4) +#define CFG_INIT_SP_OFFSET CFG_POST_WORD_ADDR /*----------------------------------------------------------------------- * Serial Port @@ -133,6 +135,10 @@ #define CONFIG_DDR_DATA_EYE 1 /* use DDR2 optimization */ #if 0 /* test-only: disable ECC for now */ #define CONFIG_DDR_ECC 1 /* enable ECC */ + +/* POST support */ +#define CONFIG_POST (CFG_POST_ECC) + #endif /*----------------------------------------------------------------------- diff --git a/include/post.h b/include/post.h index 8259e5d..c8062bb 100644 --- a/include/post.h +++ b/include/post.h @@ -92,6 +92,7 @@ extern int post_hotkeys_pressed(void); #define CFG_POST_DSP 0x00001000 #define CFG_POST_CODEC 0x00002000 #define CFG_POST_FPU 0x00004000 +#define CFG_POST_ECC 0x00008000 #endif /* CONFIG_POST */ diff --git a/post/board/lwmon5/Makefile b/post/board/lwmon5/Makefile new file mode 100644 index 0000000..c3f54e3 --- /dev/null +++ b/post/board/lwmon5/Makefile @@ -0,0 +1,29 @@ +# +# (C) Copyright 2002-2007 +# Wolfgang Denk, DENX Software Engineering, wd@denx.de. +# +# 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 +# + + +LIB = libpostlwmon5.a + +COBJS = ecc.o + +include $(TOPDIR)/post/rules.mk diff --git a/post/board/lwmon5/ecc.c b/post/board/lwmon5/ecc.c new file mode 100644 index 0000000..7f04f9a --- /dev/null +++ b/post/board/lwmon5/ecc.c @@ -0,0 +1,257 @@ +/* + * (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; + } +#endif + + return ret; + +} + +#endif /* CONFIG_POST & CFG_POST_ECC */ +#endif /* CONFIG_POST */ diff --git a/post/tests.c b/post/tests.c index f3604b2..e1c3d28 100644 --- a/post/tests.c +++ b/post/tests.c @@ -46,6 +46,7 @@ extern int spr_post_test (int flags); extern int sysmon_post_test (int flags); extern int dsp_post_test (int flags); extern int codec_post_test (int flags); +extern int ecc_post_test (int flags); extern int sysmon_init_f (void); @@ -236,6 +237,18 @@ struct post_test post_list[] = CFG_POST_CODEC }, #endif +#if CONFIG_POST & CFG_POST_ECC + { + "ECC test", + "ecc", + "This test checks ECC facility of memory.", + POST_ROM | POST_ALWAYS, + &ecc_post_test, + NULL, + NULL, + CFG_POST_ECC + }, +#endif }; unsigned int post_list_size = sizeof (post_list) / sizeof (struct post_test); |