u8 bank_sel;
int ret;
- bank_sel = offset / SPI_FLASH_16MB_BOUN;
+ bank_sel = offset / (SPI_FLASH_16MB_BOUN << flash->shift);
ret = spi_flash_cmd_bankaddr_write(flash, bank_sel);
if (ret) {
return ret;
}
- return 0;
+ return bank_sel;
+}
+#endif
+
+#ifdef CONFIG_SF_DUAL_FLASH
+static void spi_flash_dual_flash(struct spi_flash *flash, u32 *addr)
+{
+ switch (flash->dual_flash) {
+ case SF_DUAL_STACKED_FLASH:
+ if (*addr >= (flash->size >> 1)) {
+ *addr -= flash->size >> 1;
+ flash->spi->flags |= SPI_XFER_U_PAGE;
+ } else {
+ flash->spi->flags &= ~SPI_XFER_U_PAGE;
+ }
+ break;
+ case SF_DUAL_PARALLEL_FLASH:
+ *addr >>= flash->shift;
+ break;
+ default:
+ debug("SF: Unsupported dual_flash=%d\n", flash->dual_flash);
+ break;
+ }
}
#endif
{
struct spi_slave *spi = flash->spi;
unsigned long timebase;
+ unsigned long flags = SPI_XFER_BEGIN;
int ret;
u8 status;
u8 check_status = 0x0;
check_status = poll_bit;
}
- ret = spi_xfer(spi, 8, &cmd, NULL, SPI_XFER_BEGIN);
+#ifdef CONFIG_SF_DUAL_FLASH
+ if (spi->flags & SPI_XFER_U_PAGE)
+ flags |= SPI_XFER_U_PAGE;
+#endif
+ ret = spi_xfer(spi, 8, &cmd, NULL, flags);
if (ret) {
debug("SF: fail to read %s status register\n",
cmd == CMD_READ_STATUS ? "read" : "flag");
int spi_flash_cmd_erase_ops(struct spi_flash *flash, u32 offset, size_t len)
{
- u32 erase_size;
+ u32 erase_size, erase_addr;
u8 cmd[SPI_FLASH_CMD_LEN];
int ret = -1;
cmd[0] = flash->erase_cmd;
while (len) {
+ erase_addr = offset;
+
+#ifdef CONFIG_SF_DUAL_FLASH
+ if (flash->dual_flash > SF_SINGLE_FLASH)
+ spi_flash_dual_flash(flash, &erase_addr);
+#endif
#ifdef CONFIG_SPI_FLASH_BAR
- ret = spi_flash_bank(flash, offset);
+ ret = spi_flash_bank(flash, erase_addr);
if (ret < 0)
return ret;
#endif
- spi_flash_addr(offset, cmd);
+ spi_flash_addr(erase_addr, cmd);
debug("SF: erase %2x %2x %2x %2x (%x)\n", cmd[0], cmd[1],
- cmd[2], cmd[3], offset);
+ cmd[2], cmd[3], erase_addr);
ret = spi_flash_write_common(flash, cmd, sizeof(cmd), NULL, 0);
if (ret < 0) {
size_t len, const void *buf)
{
unsigned long byte_addr, page_size;
+ u32 write_addr;
size_t chunk_len, actual;
u8 cmd[SPI_FLASH_CMD_LEN];
int ret = -1;
cmd[0] = flash->write_cmd;
for (actual = 0; actual < len; actual += chunk_len) {
+ write_addr = offset;
+
+#ifdef CONFIG_SF_DUAL_FLASH
+ if (flash->dual_flash > SF_SINGLE_FLASH)
+ spi_flash_dual_flash(flash, &write_addr);
+#endif
#ifdef CONFIG_SPI_FLASH_BAR
- ret = spi_flash_bank(flash, offset);
+ ret = spi_flash_bank(flash, write_addr);
if (ret < 0)
return ret;
#endif
if (flash->spi->max_write_size)
chunk_len = min(chunk_len, flash->spi->max_write_size);
- spi_flash_addr(offset, cmd);
+ spi_flash_addr(write_addr, cmd);
debug("SF: 0x%p => cmd = { 0x%02x 0x%02x%02x%02x } chunk_len = %zu\n",
buf + actual, cmd[0], cmd[1], cmd[2], cmd[3], chunk_len);
int spi_flash_cmd_read_ops(struct spi_flash *flash, u32 offset,
size_t len, void *data)
{
- u8 *cmd, cmdsz, bank_sel = 0;
- u32 remain_len, read_len;
+ u8 *cmd, cmdsz;
+ u32 remain_len, read_len, read_addr;
+ int bank_sel = 0;
int ret = -1;
/* Handle memory-mapped SPI */
cmd[0] = flash->read_cmd;
while (len) {
-#ifdef CONFIG_SPI_FLASH_BAR
- bank_sel = offset / SPI_FLASH_16MB_BOUN;
+ read_addr = offset;
- ret = spi_flash_cmd_bankaddr_write(flash, bank_sel);
- if (ret) {
- debug("SF: fail to set bank%d\n", bank_sel);
+#ifdef CONFIG_SF_DUAL_FLASH
+ if (flash->dual_flash > SF_SINGLE_FLASH)
+ spi_flash_dual_flash(flash, &read_addr);
+#endif
+#ifdef CONFIG_SPI_FLASH_BAR
+ bank_sel = spi_flash_bank(flash, read_addr);
+ if (bank_sel < 0)
return ret;
- }
#endif
- remain_len = (SPI_FLASH_16MB_BOUN * (bank_sel + 1)) - offset;
+ remain_len = ((SPI_FLASH_16MB_BOUN << flash->shift) *
+ (bank_sel + 1)) - offset;
if (len < remain_len)
read_len = len;
else
read_len = remain_len;
- spi_flash_addr(offset, cmd);
+ spi_flash_addr(read_addr, cmd);
ret = spi_flash_read_common(flash, cmd, cmdsz, data, read_len);
if (ret < 0) {