#include <malloc.h>
#include <spi.h>
#include <spi_flash.h>
+#include <watchdog.h>
#include "spi_flash_internal.h"
-int spi_flash_cmd(struct spi_slave *spi, u8 cmd, void *response, size_t len)
+static void spi_flash_addr(u32 addr, u8 *cmd)
{
- unsigned long flags = SPI_XFER_BEGIN;
- int ret;
-
- if (len == 0)
- flags |= SPI_XFER_END;
-
- ret = spi_xfer(spi, 8, &cmd, NULL, flags);
- if (ret) {
- debug("SF: Failed to send command %02x: %d\n", cmd, ret);
- return ret;
- }
-
- if (len) {
- ret = spi_xfer(spi, len * 8, NULL, response, SPI_XFER_END);
- if (ret)
- debug("SF: Failed to read response (%zu bytes): %d\n",
- len, ret);
- }
-
- return ret;
+ /* cmd[0] is actual command */
+ cmd[1] = addr >> 16;
+ cmd[2] = addr >> 8;
+ cmd[3] = addr >> 0;
}
-int spi_flash_cmd_read(struct spi_slave *spi, const u8 *cmd,
- size_t cmd_len, void *data, size_t data_len)
+static int spi_flash_read_write(struct spi_slave *spi,
+ const u8 *cmd, size_t cmd_len,
+ const u8 *data_out, u8 *data_in,
+ size_t data_len)
{
unsigned long flags = SPI_XFER_BEGIN;
int ret;
ret = spi_xfer(spi, cmd_len * 8, cmd, NULL, flags);
if (ret) {
- debug("SF: Failed to send read command (%zu bytes): %d\n",
+ debug("SF: Failed to send command (%zu bytes): %d\n",
cmd_len, ret);
} else if (data_len != 0) {
- ret = spi_xfer(spi, data_len * 8, NULL, data, SPI_XFER_END);
+ ret = spi_xfer(spi, data_len * 8, data_out, data_in, SPI_XFER_END);
if (ret)
- debug("SF: Failed to read %zu bytes of data: %d\n",
+ debug("SF: Failed to transfer %zu bytes of data: %d\n",
data_len, ret);
}
return ret;
}
+int spi_flash_cmd(struct spi_slave *spi, u8 cmd, void *response, size_t len)
+{
+ return spi_flash_cmd_read(spi, &cmd, 1, response, len);
+}
+
+int spi_flash_cmd_read(struct spi_slave *spi, const u8 *cmd,
+ size_t cmd_len, void *data, size_t data_len)
+{
+ return spi_flash_read_write(spi, cmd, cmd_len, NULL, data, data_len);
+}
+
int spi_flash_cmd_write(struct spi_slave *spi, const u8 *cmd, size_t cmd_len,
const void *data, size_t data_len)
{
- unsigned long flags = SPI_XFER_BEGIN;
+ return spi_flash_read_write(spi, cmd, cmd_len, data, NULL, data_len);
+}
+
+int spi_flash_cmd_write_multi(struct spi_flash *flash, u32 offset,
+ size_t len, const void *buf)
+{
+ unsigned long page_addr, byte_addr, page_size;
+ size_t chunk_len, actual;
int ret;
+ u8 cmd[4];
- if (data_len == 0)
- flags |= SPI_XFER_END;
+ page_size = flash->page_size;
+ page_addr = offset / page_size;
+ byte_addr = offset % page_size;
- ret = spi_xfer(spi, cmd_len * 8, cmd, NULL, flags);
+ ret = spi_claim_bus(flash->spi);
if (ret) {
- debug("SF: Failed to send read command (%zu bytes): %d\n",
- cmd_len, ret);
- } else if (data_len != 0) {
- ret = spi_xfer(spi, data_len * 8, data, NULL, SPI_XFER_END);
+ debug("SF: unable to claim SPI bus\n");
+ return ret;
+ }
+
+ cmd[0] = CMD_PAGE_PROGRAM;
+ for (actual = 0; actual < len; actual += chunk_len) {
+ chunk_len = min(len - actual, page_size - byte_addr);
+
+ cmd[1] = page_addr >> 8;
+ cmd[2] = page_addr;
+ cmd[3] = byte_addr;
+
+ debug("PP: 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);
+
+ ret = spi_flash_cmd_write_enable(flash);
+ if (ret < 0) {
+ debug("SF: enabling write failed\n");
+ break;
+ }
+
+ ret = spi_flash_cmd_write(flash->spi, cmd, 4,
+ buf + actual, chunk_len);
+ if (ret < 0) {
+ debug("SF: write failed\n");
+ break;
+ }
+
+ ret = spi_flash_cmd_wait_ready(flash, SPI_FLASH_PROG_TIMEOUT);
if (ret)
- debug("SF: Failed to read %zu bytes of data: %d\n",
- data_len, ret);
+ break;
+
+ page_addr++;
+ byte_addr = 0;
}
+ debug("SF: program %s %zu bytes @ %#x\n",
+ ret ? "failure" : "success", len, offset);
+
+ spi_release_bus(flash->spi);
return ret;
}
-
int spi_flash_read_common(struct spi_flash *flash, const u8 *cmd,
size_t cmd_len, void *data, size_t data_len)
{
return ret;
}
+int spi_flash_cmd_read_fast(struct spi_flash *flash, u32 offset,
+ size_t len, void *data)
+{
+ u8 cmd[5];
+
+ cmd[0] = CMD_READ_ARRAY_FAST;
+ spi_flash_addr(offset, cmd);
+ cmd[4] = 0x00;
+
+ return spi_flash_read_common(flash, cmd, sizeof(cmd), data, len);
+}
+
+int spi_flash_cmd_poll_bit(struct spi_flash *flash, unsigned long timeout,
+ u8 cmd, u8 poll_bit)
+{
+ struct spi_slave *spi = flash->spi;
+ unsigned long timebase;
+ int ret;
+ u8 status;
+
+ ret = spi_xfer(spi, 8, &cmd, NULL, SPI_XFER_BEGIN);
+ if (ret) {
+ debug("SF: Failed to send command %02x: %d\n", cmd, ret);
+ return ret;
+ }
+
+ timebase = get_timer(0);
+ do {
+ WATCHDOG_RESET();
+
+ ret = spi_xfer(spi, 8, NULL, &status, 0);
+ if (ret)
+ return -1;
+
+ if ((status & poll_bit) == 0)
+ break;
+
+ } while (get_timer(timebase) < timeout);
+
+ spi_xfer(spi, 0, NULL, NULL, SPI_XFER_END);
+
+ if ((status & poll_bit) == 0)
+ return 0;
+
+ /* Timed out */
+ debug("SF: time out!\n");
+ return -1;
+}
+
+int spi_flash_cmd_wait_ready(struct spi_flash *flash, unsigned long timeout)
+{
+ return spi_flash_cmd_poll_bit(flash, timeout,
+ CMD_READ_STATUS, STATUS_WIP);
+}
+
+int spi_flash_cmd_erase(struct spi_flash *flash, u8 erase_cmd,
+ u32 offset, size_t len)
+{
+ u32 start, end, erase_size;
+ int ret;
+ u8 cmd[4];
+
+ erase_size = flash->sector_size;
+ if (offset % erase_size || len % erase_size) {
+ debug("SF: Erase offset/length not multiple of erase size\n");
+ return -1;
+ }
+
+ ret = spi_claim_bus(flash->spi);
+ if (ret) {
+ debug("SF: Unable to claim SPI bus\n");
+ return ret;
+ }
+
+ cmd[0] = erase_cmd;
+ start = offset;
+ end = start + len;
+
+ while (offset < end) {
+ spi_flash_addr(offset, cmd);
+ offset += erase_size;
+
+ debug("SF: erase %2x %2x %2x %2x (%x)\n", cmd[0], cmd[1],
+ cmd[2], cmd[3], offset);
+
+ ret = spi_flash_cmd_write_enable(flash);
+ if (ret)
+ goto out;
+
+ ret = spi_flash_cmd_write(flash->spi, cmd, sizeof(cmd), NULL, 0);
+ if (ret)
+ goto out;
+
+ ret = spi_flash_cmd_wait_ready(flash, SPI_FLASH_PAGE_ERASE_TIMEOUT);
+ if (ret)
+ goto out;
+ }
+
+ debug("SF: Successfully erased %zu bytes @ %#x\n",
+ len * erase_size, start);
+
+ out:
+ spi_release_bus(flash->spi);
+ return ret;
+}
+
/*
* The following table holds all device probe functions
*
#ifdef CONFIG_SPI_FLASH_ATMEL
{ 0, 0x1f, spi_flash_probe_atmel, },
#endif
+#ifdef CONFIG_SPI_FLASH_EON
+ { 0, 0x1c, spi_flash_probe_eon, },
+#endif
#ifdef CONFIG_SPI_FLASH_MACRONIX
{ 0, 0xc2, spi_flash_probe_macronix, },
#endif
#endif
#ifdef CONFIG_SPI_FLASH_WINBOND
{ 0, 0xef, spi_flash_probe_winbond, },
+#endif
+#ifdef CONFIG_SPI_FRAM_RAMTRON
+ { 6, 0xc2, spi_fram_probe_ramtron, },
+# undef IDCODE_CONT_LEN
+# define IDCODE_CONT_LEN 6
#endif
/* Keep it sorted by best detection */
#ifdef CONFIG_SPI_FLASH_STMICRO
{ 0, 0xff, spi_flash_probe_stmicro, },
#endif
+#ifdef CONFIG_SPI_FRAM_RAMTRON_NON_JEDEC
+ { 0, 0xff, spi_fram_probe_ramtron, },
+#endif
};
#define IDCODE_LEN (IDCODE_CONT_LEN + IDCODE_PART_LEN)
goto err_manufacturer_probe;
}
+ printf("SF: Detected %s with page size ", flash->name);
+ print_size(flash->sector_size, ", total ");
+ print_size(flash->size, "\n");
+
spi_release_bus(spi);
return flash;
projects / karo-tx-uboot.git / blobdiff