From a9f5faba6e2c5819fc1ebeef02fad1726721f849 Mon Sep 17 00:00:00 2001 From: "Jens Scharsig (BuS Elektronik)" Date: Fri, 27 Jan 2012 09:29:53 +0100 Subject: * Fix: watchdog timed out, if flash blank (0xFF) blocks The current implementation of cfi_flash uses udelay to reset watchdog. If several blocks are blank (0xff filled) the watchdog timed out. The reason is, udelay is never called, if flash device is ready to fast. e.g. mw.w $(copy_addr) FFFF 10000;cp.b $(copy_addr) 10880000 20000 -> watchdog timed out mw.w $(copy_addr) 0000 10000;cp.b $(copy_addr) 10880000 20000 -> watchdog not timed out This patch adds an extra watchdog reset in front of flash ready check. Signed-off-by: Jens Scharsig (BuS Elektronik) Signed-off-by: Stefan Roese --- drivers/mtd/cfi_flash.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'drivers') diff --git a/drivers/mtd/cfi_flash.c b/drivers/mtd/cfi_flash.c index 5494bcffa7..722c3fc7bd 100644 --- a/drivers/mtd/cfi_flash.c +++ b/drivers/mtd/cfi_flash.c @@ -40,6 +40,7 @@ #include #include #include +#include /* * This file implements a Common Flash Interface (CFI) driver for @@ -577,6 +578,7 @@ static int flash_status_check (flash_info_t * info, flash_sect_t sector, reset_timer(); #endif start = get_timer (0); + WATCHDOG_RESET(); while (flash_is_busy (info, sector)) { if (get_timer (start) > tout) { printf ("Flash %s timeout at address %lx data %lx\n", @@ -668,6 +670,7 @@ static int flash_status_poll(flash_info_t *info, void *src, void *dst, reset_timer(); #endif start = get_timer(0); + WATCHDOG_RESET(); while (1) { switch (info->portwidth) { case FLASH_CFI_8BIT: -- cgit v1.2.1 From 5e72ef08105086de578582d3c7375601c77550db Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?David=20M=C3=BCller=20=28ELSOFT=20AG=29?= Date: Mon, 6 Feb 2012 09:42:54 +0100 Subject: add STM29F400BB to table of supported legacy flashs Signed-off-by: David Mueller Signed-off-by: Stefan Roese --- drivers/mtd/jedec_flash.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) (limited to 'drivers') diff --git a/drivers/mtd/jedec_flash.c b/drivers/mtd/jedec_flash.c index 36d30c3b68..2350f361f1 100644 --- a/drivers/mtd/jedec_flash.c +++ b/drivers/mtd/jedec_flash.c @@ -69,6 +69,9 @@ #define SST39SF010A 0x00B5 #define SST39SF020A 0x00B6 +/* STM */ +#define STM29F400BB 0x00D6 + /* MXIC */ #define MX29LV040 0x004F @@ -346,6 +349,23 @@ static const struct amd_flash_info jedec_table[] = { ERASEINFO(0x10000, 15), } }, + { + .mfr_id = (u16)STM_MANUFACT, + .dev_id = STM29F400BB, + .name = "ST Micro M29F400BB", + .uaddr = { + [1] = MTD_UADDR_0x0555_0x02AA /* x16 */ + }, + .DevSize = SIZE_512KiB, + .CmdSet = CFI_CMDSET_AMD_LEGACY, + .NumEraseRegions = 4, + .regions = { + ERASEINFO(0x04000, 1), + ERASEINFO(0x02000, 2), + ERASEINFO(0x08000, 1), + ERASEINFO(0x10000, 7), + } + }, #endif }; -- cgit v1.2.1