* Command for accessing SPI flash.
*
* Copyright (C) 2008 Atmel Corporation
- * Licensed under the GPL-2 or later.
+ *
+ * SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <div64.h>
#include <malloc.h>
+#include <spi.h>
#include <spi_flash.h>
#include <asm/io.h>
-#ifndef CONFIG_SF_DEFAULT_SPEED
-# define CONFIG_SF_DEFAULT_SPEED 1000000
-#endif
-#ifndef CONFIG_SF_DEFAULT_MODE
-# define CONFIG_SF_DEFAULT_MODE SPI_MODE_3
-#endif
-#ifndef CONFIG_SF_DEFAULT_CS
-# define CONFIG_SF_DEFAULT_CS 0
-#endif
-#ifndef CONFIG_SF_DEFAULT_BUS
-# define CONFIG_SF_DEFAULT_BUS 0
-#endif
-
static struct spi_flash *flash;
size_t len, const char *buf, char *cmp_buf, size_t *skipped)
{
debug("offset=%#x, sector_size=%#x, len=%#zx\n",
- offset, flash->sector_size, len);
- if (spi_flash_read(flash, offset, len, cmp_buf))
+ offset, flash->sector_size, len);
+ /* Read the entire sector so to allow for rewriting */
+ if (spi_flash_read(flash, offset, flash->sector_size, cmp_buf))
return "read";
+ /* Compare only what is meaningful (len) */
if (memcmp(cmp_buf, buf, len) == 0) {
debug("Skip region %x size %zx: no change\n",
- offset, len);
+ offset, len);
*skipped += len;
return NULL;
}
- if (spi_flash_erase(flash, offset, len))
+ /* Erase the entire sector */
+ if (spi_flash_erase(flash, offset, flash->sector_size))
return "erase";
+ /* Write the initial part of the block from the source */
if (spi_flash_write(flash, offset, len, buf))
return "write";
+ /* If it's a partial sector, rewrite the existing part */
+ if (len != flash->sector_size) {
+ /* Rewrite the original data to the end of the sector */
+ if (spi_flash_write(flash, offset + len,
+ flash->sector_size - len, &cmp_buf[len]))
+ return "write";
+ }
+
return NULL;
}
todo = min(end - buf, flash->sector_size);
if (get_timer(last_update) > 100) {
printf(" \rUpdating, %zu%% %lu B/s",
- 100 - (end - buf) / scale,
+ 100 - (end - buf) / scale,
bytes_per_second(buf - start_buf,
start_time));
last_update = get_timer(0);
delta = get_timer(start_time);
printf("%zu bytes written, %zu bytes skipped", len - skipped,
- skipped);
+ skipped);
printf(" in %ld.%lds, speed %ld B/s\n",
- delta / 1000, delta % 1000, bytes_per_second(len, start_time));
+ delta / 1000, delta % 1000, bytes_per_second(len, start_time));
return 0;
}
unsigned long len;
void *buf;
char *endp;
- int ret;
+ int ret = 1;
if (argc < 4)
return -1;
/* Consistency checking */
if (offset + len > flash->size) {
printf("ERROR: attempting %s past flash size (%#x)\n",
- argv[0], flash->size);
+ argv[0], flash->size);
return 1;
}
return 1;
}
- if (strcmp(argv[0], "update") == 0)
+ if (strcmp(argv[0], "update") == 0) {
ret = spi_flash_update(flash, offset, len, buf);
- else if (strcmp(argv[0], "read") == 0)
- ret = spi_flash_read(flash, offset, len, buf);
- else
- ret = spi_flash_write(flash, offset, len, buf);
+ } else if (strncmp(argv[0], "read", 4) == 0 ||
+ strncmp(argv[0], "write", 5) == 0) {
+ int read;
+
+ read = strncmp(argv[0], "read", 4) == 0;
+ if (read)
+ ret = spi_flash_read(flash, offset, len, buf);
+ else
+ ret = spi_flash_write(flash, offset, len, buf);
+
+ printf("SF: %zu bytes @ %#x %s: %s\n", (size_t)len, (u32)offset,
+ read ? "Read" : "Written", ret ? "ERROR" : "OK");
+ }
unmap_physmem(buf, len);
- if (ret) {
- printf("SPI flash %s failed\n", argv[0]);
- return 1;
- }
-
- return 0;
+ return ret == 0 ? 0 : 1;
}
static int do_spi_flash_erase(int argc, char * const argv[])
/* Consistency checking */
if (offset + len > flash->size) {
printf("ERROR: attempting %s past flash size (%#x)\n",
- argv[0], flash->size);
+ argv[0], flash->size);
return 1;
}
ret = spi_flash_erase(flash, offset, len);
- if (ret) {
- printf("SPI flash %s failed\n", argv[0]);
- return 1;
- }
+ printf("SF: %zu bytes @ %#x Erased: %s\n", (size_t)len, (u32)offset,
+ ret ? "ERROR" : "OK");
- return 0;
+ return ret == 0 ? 0 : 1;
}
#ifdef CONFIG_CMD_SF_TEST
int bps; /* Bits per second */
speed = (long long)test->bytes * 1000;
- do_div(speed, test->time_ms[stage] * 1024);
+ if (test->time_ms[stage])
+ do_div(speed, test->time_ms[stage] * 1024);
bps = speed * 8;
printf("%d %s: %d ticks, %d KiB/s %d.%03d Mbps\n", stage,
{
unsigned long offset;
unsigned long len;
- uint8_t *buf = (uint8_t *)CONFIG_SYS_TEXT_BASE;
+ uint8_t *buf, *from;
char *endp;
uint8_t *vbuf;
int ret;
+ if (argc < 3)
+ return -1;
offset = simple_strtoul(argv[1], &endp, 16);
if (*argv[1] == 0 || *endp != 0)
return -1;
vbuf = malloc(len);
if (!vbuf) {
- printf("Cannot allocate memory\n");
+ printf("Cannot allocate memory (%lu bytes)\n", len);
return 1;
}
buf = malloc(len);
if (!buf) {
free(vbuf);
- printf("Cannot allocate memory\n");
+ printf("Cannot allocate memory (%lu bytes)\n", len);
return 1;
}
- memcpy(buf, (char *)CONFIG_SYS_TEXT_BASE, len);
+ from = map_sysmem(CONFIG_SYS_TEXT_BASE, 0);
+ memcpy(buf, from, len);
ret = spi_flash_test(flash, buf, len, offset, vbuf);
free(vbuf);
free(buf);
}
#endif /* CONFIG_CMD_SF_TEST */
-static int do_spi_flash(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+static int do_spi_flash(cmd_tbl_t *cmdtp, int flag, int argc,
+ char * const argv[])
{
const char *cmd;
int ret;
"SPI flash sub-system",
"probe [[bus:]cs] [hz] [mode] - init flash device on given SPI bus\n"
" and chip select\n"
- "sf read addr offset len - read `len' bytes starting at\n"
+ "sf read addr offset len - read `len' bytes starting at\n"
" `offset' to memory at `addr'\n"
"sf write addr offset len - write `len' bytes from memory\n"
" at `addr' to flash at `offset'\n"
projects / karo-tx-uboot.git / blobdiff