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DataFlash AT45DB021 support

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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>
This commit is contained in:
Sergey Lapin
2008-06-05 11:06:29 +04:00
committed by Jean-Christophe PLAGNIOL-VILLARD
parent 4109df6f75
commit c6457e3b8b
2 changed files with 15 additions and 0 deletions
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14
drivers/mtd/dataflash.c
View File

@@ -54,6 +54,17 @@ int AT91F_DataflashInit (void)
&dataflash_info[i].Desc); &dataflash_info[i].Desc);
switch (dfcode) { 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: case AT45DB161:
dataflash_info[i].Device.pages_number = 4096; dataflash_info[i].Device.pages_number = 4096;
dataflash_info[i].Device.pages_size = 528; dataflash_info[i].Device.pages_size = 528;
@@ -178,6 +189,9 @@ void dataflash_print_info (void)
if (dataflash_info[i].id != 0) { if (dataflash_info[i].id != 0) {
printf("DataFlash:"); printf("DataFlash:");
switch (dataflash_info[i].id) { switch (dataflash_info[i].id) {
case AT45DB021:
printf("AT45DB021\n");
break;
case AT45DB161: case AT45DB161:
printf("AT45DB161\n"); printf("AT45DB161\n");
break; break;

1
include/dataflash.h
View File

@@ -137,6 +137,7 @@ struct dataflash_addr {
/*-------------------------------------------------------------------------------------------------*/ /*-------------------------------------------------------------------------------------------------*/
#define AT45DB161 0x2c #define AT45DB161 0x2c
#define AT45DB021 0x14
#define AT45DB321 0x34 #define AT45DB321 0x34
#define AT45DB642 0x3c #define AT45DB642 0x3c
#define AT45DB128 0x10 #define AT45DB128 0x10