summaryrefslogtreecommitdiff
path: root/drivers
diff options
context:
space:
mode:
Diffstat (limited to 'drivers')
-rw-r--r--drivers/mtd/cfi_flash.c151
1 files changed, 18 insertions, 133 deletions
diff --git a/drivers/mtd/cfi_flash.c b/drivers/mtd/cfi_flash.c
index 6eea49a..24eb33f 100644
--- a/drivers/mtd/cfi_flash.c
+++ b/drivers/mtd/cfi_flash.c
@@ -39,6 +39,7 @@
#include <asm/io.h>
#include <asm/byteorder.h>
#include <environment.h>
+#include <mtd/cfi_flash.h>
/*
* This file implements a Common Flash Interface (CFI) driver for
@@ -65,100 +66,6 @@
#define CONFIG_SYS_FLASH_BANKS_LIST { CONFIG_SYS_FLASH_BASE }
#endif
-#define FLASH_CMD_CFI 0x98
-#define FLASH_CMD_READ_ID 0x90
-#define FLASH_CMD_RESET 0xff
-#define FLASH_CMD_BLOCK_ERASE 0x20
-#define FLASH_CMD_ERASE_CONFIRM 0xD0
-#define FLASH_CMD_WRITE 0x40
-#define FLASH_CMD_PROTECT 0x60
-#define FLASH_CMD_PROTECT_SET 0x01
-#define FLASH_CMD_PROTECT_CLEAR 0xD0
-#define FLASH_CMD_CLEAR_STATUS 0x50
-#define FLASH_CMD_READ_STATUS 0x70
-#define FLASH_CMD_WRITE_TO_BUFFER 0xE8
-#define FLASH_CMD_WRITE_BUFFER_PROG 0xE9
-#define FLASH_CMD_WRITE_BUFFER_CONFIRM 0xD0
-
-#define FLASH_STATUS_DONE 0x80
-#define FLASH_STATUS_ESS 0x40
-#define FLASH_STATUS_ECLBS 0x20
-#define FLASH_STATUS_PSLBS 0x10
-#define FLASH_STATUS_VPENS 0x08
-#define FLASH_STATUS_PSS 0x04
-#define FLASH_STATUS_DPS 0x02
-#define FLASH_STATUS_R 0x01
-#define FLASH_STATUS_PROTECT 0x01
-
-#define AMD_CMD_RESET 0xF0
-#define AMD_CMD_WRITE 0xA0
-#define AMD_CMD_ERASE_START 0x80
-#define AMD_CMD_ERASE_SECTOR 0x30
-#define AMD_CMD_UNLOCK_START 0xAA
-#define AMD_CMD_UNLOCK_ACK 0x55
-#define AMD_CMD_WRITE_TO_BUFFER 0x25
-#define AMD_CMD_WRITE_BUFFER_CONFIRM 0x29
-
-#define AMD_STATUS_TOGGLE 0x40
-#define AMD_STATUS_ERROR 0x20
-
-#define ATM_CMD_UNLOCK_SECT 0x70
-#define ATM_CMD_SOFTLOCK_START 0x80
-#define ATM_CMD_LOCK_SECT 0x40
-
-#define FLASH_CONTINUATION_CODE 0x7F
-
-#define FLASH_OFFSET_MANUFACTURER_ID 0x00
-#define FLASH_OFFSET_DEVICE_ID 0x01
-#define FLASH_OFFSET_DEVICE_ID2 0x0E
-#define FLASH_OFFSET_DEVICE_ID3 0x0F
-#define FLASH_OFFSET_CFI 0x55
-#define FLASH_OFFSET_CFI_ALT 0x555
-#define FLASH_OFFSET_CFI_RESP 0x10
-#define FLASH_OFFSET_PRIMARY_VENDOR 0x13
-/* extended query table primary address */
-#define FLASH_OFFSET_EXT_QUERY_T_P_ADDR 0x15
-#define FLASH_OFFSET_WTOUT 0x1F
-#define FLASH_OFFSET_WBTOUT 0x20
-#define FLASH_OFFSET_ETOUT 0x21
-#define FLASH_OFFSET_CETOUT 0x22
-#define FLASH_OFFSET_WMAX_TOUT 0x23
-#define FLASH_OFFSET_WBMAX_TOUT 0x24
-#define FLASH_OFFSET_EMAX_TOUT 0x25
-#define FLASH_OFFSET_CEMAX_TOUT 0x26
-#define FLASH_OFFSET_SIZE 0x27
-#define FLASH_OFFSET_INTERFACE 0x28
-#define FLASH_OFFSET_BUFFER_SIZE 0x2A
-#define FLASH_OFFSET_NUM_ERASE_REGIONS 0x2C
-#define FLASH_OFFSET_ERASE_REGIONS 0x2D
-#define FLASH_OFFSET_PROTECT 0x02
-#define FLASH_OFFSET_USER_PROTECTION 0x85
-#define FLASH_OFFSET_INTEL_PROTECTION 0x81
-
-#define CFI_CMDSET_NONE 0
-#define CFI_CMDSET_INTEL_EXTENDED 1
-#define CFI_CMDSET_AMD_STANDARD 2
-#define CFI_CMDSET_INTEL_STANDARD 3
-#define CFI_CMDSET_AMD_EXTENDED 4
-#define CFI_CMDSET_MITSU_STANDARD 256
-#define CFI_CMDSET_MITSU_EXTENDED 257
-#define CFI_CMDSET_SST 258
-#define CFI_CMDSET_INTEL_PROG_REGIONS 512
-
-#ifdef CONFIG_SYS_FLASH_CFI_AMD_RESET /* needed for STM_ID_29W320DB on UC100 */
-# undef FLASH_CMD_RESET
-# define FLASH_CMD_RESET AMD_CMD_RESET /* use AMD-Reset instead */
-#endif
-
-typedef union {
- unsigned char c;
- unsigned short w;
- unsigned long l;
- unsigned long long ll;
-} cfiword_t;
-
-#define NUM_ERASE_REGIONS 4 /* max. number of erase regions */
-
static uint flash_offset_cfi[2] = { FLASH_OFFSET_CFI, FLASH_OFFSET_CFI_ALT };
static uint flash_verbose = 1;
@@ -178,38 +85,6 @@ flash_info_t flash_info[CFI_MAX_FLASH_BANKS]; /* FLASH chips info */
#define CONFIG_SYS_FLASH_CFI_WIDTH FLASH_CFI_8BIT
#endif
-/* CFI standard query structure */
-struct cfi_qry {
- u8 qry[3];
- u16 p_id;
- u16 p_adr;
- u16 a_id;
- u16 a_adr;
- u8 vcc_min;
- u8 vcc_max;
- u8 vpp_min;
- u8 vpp_max;
- u8 word_write_timeout_typ;
- u8 buf_write_timeout_typ;
- u8 block_erase_timeout_typ;
- u8 chip_erase_timeout_typ;
- u8 word_write_timeout_max;
- u8 buf_write_timeout_max;
- u8 block_erase_timeout_max;
- u8 chip_erase_timeout_max;
- u8 dev_size;
- u16 interface_desc;
- u16 max_buf_write_size;
- u8 num_erase_regions;
- u32 erase_region_info[NUM_ERASE_REGIONS];
-} __attribute__((packed));
-
-struct cfi_pri_hdr {
- u8 pri[3];
- u8 major_version;
- u8 minor_version;
-} __attribute__((packed));
-
static void __flash_write8(u8 value, void *addr)
{
__raw_writeb(value, addr);
@@ -452,8 +327,8 @@ static ulong flash_read_long (flash_info_t * info, flash_sect_t sect,
/*
* Write a proper sized command to the correct address
*/
-static void flash_write_cmd (flash_info_t * info, flash_sect_t sect,
- uint offset, u32 cmd)
+void flash_write_cmd (flash_info_t * info, flash_sect_t sect,
+ uint offset, u32 cmd)
{
void *addr;
@@ -1699,15 +1574,25 @@ static void flash_read_cfi (flash_info_t *info, void *buf,
p[i] = flash_read_uchar(info, start + i);
}
+void __flash_cmd_reset(flash_info_t *info)
+{
+ /*
+ * We do not yet know what kind of commandset to use, so we issue
+ * the reset command in both Intel and AMD variants, in the hope
+ * that AMD flash roms ignore the Intel command.
+ */
+ flash_write_cmd(info, 0, 0, AMD_CMD_RESET);
+ flash_write_cmd(info, 0, 0, FLASH_CMD_RESET);
+}
+void flash_cmd_reset(flash_info_t *info)
+ __attribute__((weak,alias("__flash_cmd_reset")));
+
static int __flash_detect_cfi (flash_info_t * info, struct cfi_qry *qry)
{
int cfi_offset;
- /* We do not yet know what kind of commandset to use, so we issue
- the reset command in both Intel and AMD variants, in the hope
- that AMD flash roms ignore the Intel command. */
- flash_write_cmd (info, 0, 0, AMD_CMD_RESET);
- flash_write_cmd (info, 0, 0, FLASH_CMD_RESET);
+ /* Issue FLASH reset command */
+ flash_cmd_reset(info);
for (cfi_offset=0;
cfi_offset < sizeof(flash_offset_cfi) / sizeof(uint);