summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorRyan Harkin <ryan.harkin@linaro.org>2015-05-08 18:07:52 +0100
committerTom Rini <trini@konsulko.com>2015-05-27 13:35:54 -0400
commitf19f389f341f5370e7cdec8f9f345993a3c070d6 (patch)
tree5f4dbb9e1d6d877ad43e60887d73f41d91f49ffd
parent2efef4041f969b633bd5cd3ea177666fa7a1b3e2 (diff)
vexpress64: specify CONFIG_SYS_FLASH_CFI_WIDTH
Testing on the ARM Versatile Express Juno board showed intermittent CFI flash detection problems. Debug output in exception cases showed that the NOR flash was returning incorrect values to a query command: fwc addr 0000000008000000 cmd f0 f0f0f0f0 32bit x 8 bit fwc addr 0000000008000000 cmd ff ffffffff 32bit x 8 bit fwc addr 0000000008000154 cmd 98 98989898 32bit x 8 bit is= cmd 51(Q) addr 0000000008000040 is= 00800051 51515151 fwc addr 0000000008001554 cmd 98 98989898 32bit x 8 bit is= cmd 51(Q) addr 0000000008000040 is= 00800051 51515151 fwc addr 0000000008000000 cmd f0 00f000f0 32bit x 16 bit fwc addr 0000000008000000 cmd ff 00ff00ff 32bit x 16 bit fwc addr 0000000008000154 cmd 98 00980098 32bit x 16 bit is= cmd 51(Q) addr 0000000008000040 is= 00800051 00510051 fwc addr 0000000008001554 cmd 98 00980098 32bit x 16 bit is= cmd 51(Q) addr 0000000008000040 is= 00800051 00510051 Debugging showed that the problem could be solved by preventing u-boot from scanning different flash widths by specifying CONFIG_SYS_FLASH_CFI_WIDTH so that only using the 'correct' width was used. Signed-off-by: Ryan Harkin <ryan.harkin@linaro.org> Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
-rw-r--r--include/configs/vexpress_aemv8a.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/configs/vexpress_aemv8a.h b/include/configs/vexpress_aemv8a.h
index 032010bb9e..18edd5d35b 100644
--- a/include/configs/vexpress_aemv8a.h
+++ b/include/configs/vexpress_aemv8a.h
@@ -264,6 +264,7 @@
#define CONFIG_CMD_ARMFLASH
#define CONFIG_SYS_FLASH_CFI 1
#define CONFIG_FLASH_CFI_DRIVER 1
+#define CONFIG_SYS_FLASH_CFI_WIDTH FLASH_CFI_32BIT
#define CONFIG_SYS_FLASH_BASE 0x08000000
#define CONFIG_SYS_FLASH_SIZE 0x04000000 /* 64 MiB */
#define CONFIG_SYS_MAX_FLASH_BANKS 2