This adds a simple parallel nor flash test to automatically verify erasing/writing/reading of sectors. The code is based on existing Blackfin tests but generalized for everyone to use.
Signed-off-by: Mike Frysinger vapier@gentoo.org --- include/post.h | 1 + post/drivers/Makefile | 2 +- post/drivers/flash.c | 96 +++++++++++++++++++++++++++++++++++++++++++++++++ post/tests.c | 15 +++++++- 4 files changed, 112 insertions(+), 2 deletions(-) create mode 100644 post/drivers/flash.c
diff --git a/include/post.h b/include/post.h index c9ec2f4..19991de 100644 --- a/include/post.h +++ b/include/post.h @@ -186,6 +186,7 @@ extern int post_hotkeys_pressed(void); #define CONFIG_SYS_POST_BSPEC5 0x00100000 #define CONFIG_SYS_POST_CODEC 0x00200000 #define CONFIG_SYS_POST_COPROC 0x00400000 +#define CONFIG_SYS_POST_FLASH 0x00800000
#endif /* CONFIG_POST */
diff --git a/post/drivers/Makefile b/post/drivers/Makefile index 0d87ae0..85d6c03 100644 --- a/post/drivers/Makefile +++ b/post/drivers/Makefile @@ -24,6 +24,6 @@ include $(TOPDIR)/config.mk
LIB = libpostdrivers.o
-COBJS-$(CONFIG_HAS_POST) += i2c.o memory.o rtc.o +COBJS-$(CONFIG_HAS_POST) += flash.o i2c.o memory.o rtc.o
include $(TOPDIR)/post/rules.mk diff --git a/post/drivers/flash.c b/post/drivers/flash.c new file mode 100644 index 0000000..5ecb853 --- /dev/null +++ b/post/drivers/flash.c @@ -0,0 +1,96 @@ +/* + * Parallel NOR Flash tests + * + * Copyright (c) 2005-2011 Analog Devices Inc. + * + * Licensed under the GPL-2 or later. + */ + +#include <common.h> +#include <post.h> +#include <flash.h> + +#if CONFIG_POST & CONFIG_SYS_POST_FLASH + +/* + * This code will walk over the declared sectors erasing them, + * then programming them, then verifying the written contents. + * Possible future work: + * - verify sectors before/after are not erased/written + * - verify partial writes (e.g. programming only middle of sector) + * - verify the contents of the erased sector + * - better seed pattern than 0x00..0xff + */ + +#ifndef CONFIG_SYS_POST_FLASH_NUM +# define CONFIG_SYS_POST_FLASH_NUM 0 +#endif +#if CONFIG_SYS_POST_FLASH_START >= CONFIG_SYS_POST_FLASH_END +# error "invalid flash block start/end" +#endif + +extern flash_info_t flash_info[]; + +static void *seed_src_data(ulong *old_len, ulong new_len) +{ + unsigned char *ret = (void *)CONFIG_SYS_SDRAM_BASE; + ulong i; + + for (i = *old_len; i < new_len; ++i) + ret[i] = i; + + *old_len = new_len; + + return ret; +} + +int flash_post_test(int flags) +{ + ulong len; + void *src; + int ret, n, n_start, n_end; + flash_info_t *info; + + /* the output from the common flash layers needs help */ + puts("\n"); + + len = 0; + info = &flash_info[CONFIG_SYS_POST_FLASH_NUM]; + n_start = CONFIG_SYS_POST_FLASH_START; + n_end = CONFIG_SYS_POST_FLASH_END; + + for (n = n_start; n < n_end; ++n) { + ulong s_start, s_len, s_off; + + s_start = info->start[n]; + s_len = flash_sector_size(info, n); + s_off = s_start - info->start[0]; + + src = seed_src_data(&len, s_len); + + printf("\tsector %i: %#lx +%#lx", + n, s_start, s_len); + + ret = flash_erase(info, n, n + 1); + if (ret) { + flash_perror(ret); + break; + } + + ret = write_buff(info, src, s_start, s_len); + if (ret) { + flash_perror(ret); + break; + } + + ret = memcmp(src, (void *)s_start, s_len); + if (ret) { + printf(" verify failed with %i\n", ret); + break; + } + } + + return ret; +} + +#endif diff --git a/post/tests.c b/post/tests.c index 71437b6..bfb9cb5 100644 --- a/post/tests.c +++ b/post/tests.c @@ -46,6 +46,7 @@ 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 flash_post_test(int flags);
extern int dspic_init_post_test (int flags); extern int dspic_post_test (int flags); @@ -301,7 +302,19 @@ struct post_test post_list[] = NULL, NULL, CONFIG_SYS_POST_COPROC - } + }, +#endif +#if CONFIG_POST & CONFIG_SYS_POST_FLASH + { + "Parallel NOR flash test", + "flash", + "This test verifies parallel flash operations.", + POST_RAM | POST_SLOWTEST | POST_MANUAL, + &flash_post_test, + NULL, + NULL, + CONFIG_SYS_POST_FLASH + }, #endif };