Some boards based on AT91SAM926X-EK use smaller DF chips to keep bootstrap, u-boot and its environment, using NAND or other external storage for kernel and rootfs. This patch adds support for small 1024x263 chip.

Signed-off-by: Sergey Lapin slapin@ossfans.org --- drivers/mtd/dataflash.c | 14 ++++++++++++++- include/dataflash.h | 1 + 2 files changed, 16 insertions(+), 2 deletions(-)

diff --git a/drivers/mtd/dataflash.c b/drivers/mtd/dataflash.c index 8247aa0..92accc0 100644 --- a/drivers/mtd/dataflash.c +++ b/drivers/mtd/dataflash.c @@ -52,8 +52,19 @@ int AT91F_DataflashInit (void) dataflash_info[i].Device.pages_number = 0; dfcode = AT91F_DataflashProbe (cs[i].cs, &dataflash_info[i].Desc);

switch (dfcode) { + case AT45DB021: + dataflash_info[i].Device.pages_number = 1024; + dataflash_info[i].Device.pages_size = 263; + dataflash_info[i].Device.page_offset = 9; + dataflash_info[i].Device.byte_mask = 0x300; + dataflash_info[i].Device.cs = cs[i].cs; + dataflash_info[i].Desc.DataFlash_state = IDLE; + dataflash_info[i].logical_address = cs[i].addr; + dataflash_info[i].id = dfcode; + found[i] += dfcode;; + break; case AT45DB161: dataflash_info[i].Device.pages_number = 4096; dataflash_info[i].Device.pages_size = 528; @@ -178,6 +188,9 @@ void dataflash_print_info (void) if (dataflash_info[i].id != 0) { printf("DataFlash:"); switch (dataflash_info[i].id) { + case AT45DB021: + printf("AT45DB021\n"); + break; case AT45DB161: printf("AT45DB161\n"); break; diff --git a/include/dataflash.h b/include/dataflash.h index f20c738..11e5188 100644 --- a/include/dataflash.h +++ b/include/dataflash.h @@ -137,6 +137,7 @@ struct dataflash_addr { /*-------------------------------------------------------------------------------------------------*/

#define AT45DB161 0x2c +#define AT45DB021 0x14 #define AT45DB321 0x34 #define AT45DB642 0x3c #define AT45DB128 0x10