[PATCH v2 1/1] env: sf: single function env_sf_save()
Harry Waschkeit
Harry.Waschkeit at men.de
Mon Feb 1 13:03:00 CET 2021
Instead of implementing redundant environments in two very similar
functions env_sf_save(), handle redundancy in one function, placing the
few differences in appropriate pre-compiler sections depending on config
option CONFIG_ENV_OFFSET_REDUND.
Additionally, several checkpatch complaints were addressed.
This patch is in preparation for adding support for env erase.
Signed-off-by: Harry Waschkeit <Harry.Waschkeit at men.de>
---
Changes in v2:
- remove one more #ifdef, instead take advantage of compiler attribute
__maybe_unused for one variable used only in case of redundant
environments
env/sf.c | 130 ++++++++++++++++++-------------------------------------
1 file changed, 41 insertions(+), 89 deletions(-)
diff --git a/env/sf.c b/env/sf.c
index 937778aa37..199114fd3b 100644
--- a/env/sf.c
+++ b/env/sf.c
@@ -66,13 +66,14 @@ static int setup_flash_device(void)
return 0;
}
-#if defined(CONFIG_ENV_OFFSET_REDUND)
static int env_sf_save(void)
{
env_t env_new;
- char *saved_buffer = NULL, flag = ENV_REDUND_OBSOLETE;
+ char *saved_buffer = NULL;
u32 saved_size, saved_offset, sector;
+ ulong offset;
int ret;
+ __maybe_unused char flag = ENV_REDUND_OBSOLETE;
ret = setup_flash_device();
if (ret)
@@ -81,27 +82,33 @@ static int env_sf_save(void)
ret = env_export(&env_new);
if (ret)
return -EIO;
- env_new.flags = ENV_REDUND_ACTIVE;
- if (gd->env_valid == ENV_VALID) {
- env_new_offset = CONFIG_ENV_OFFSET_REDUND;
- env_offset = CONFIG_ENV_OFFSET;
- } else {
- env_new_offset = CONFIG_ENV_OFFSET;
- env_offset = CONFIG_ENV_OFFSET_REDUND;
- }
+#if CONFIG_IS_ENABLED(SYS_REDUNDAND_ENVIRONMENT)
+ env_new.flags = ENV_REDUND_ACTIVE;
+
+ if (gd->env_valid == ENV_VALID) {
+ env_new_offset = CONFIG_ENV_OFFSET_REDUND;
+ env_offset = CONFIG_ENV_OFFSET;
+ } else {
+ env_new_offset = CONFIG_ENV_OFFSET;
+ env_offset = CONFIG_ENV_OFFSET_REDUND;
+ }
+ offset = env_new_offset;
+#else
+ offset = CONFIG_ENV_OFFSET;
+#endif
/* Is the sector larger than the env (i.e. embedded) */
if (CONFIG_ENV_SECT_SIZE > CONFIG_ENV_SIZE) {
saved_size = CONFIG_ENV_SECT_SIZE - CONFIG_ENV_SIZE;
- saved_offset = env_new_offset + CONFIG_ENV_SIZE;
+ saved_offset = offset + CONFIG_ENV_SIZE;
saved_buffer = memalign(ARCH_DMA_MINALIGN, saved_size);
if (!saved_buffer) {
ret = -ENOMEM;
goto done;
}
- ret = spi_flash_read(env_flash, saved_offset,
- saved_size, saved_buffer);
+ ret = spi_flash_read(env_flash, saved_offset, saved_size,
+ saved_buffer);
if (ret)
goto done;
}
@@ -109,35 +116,39 @@ static int env_sf_save(void)
sector = DIV_ROUND_UP(CONFIG_ENV_SIZE, CONFIG_ENV_SECT_SIZE);
puts("Erasing SPI flash...");
- ret = spi_flash_erase(env_flash, env_new_offset,
- sector * CONFIG_ENV_SECT_SIZE);
+ ret = spi_flash_erase(env_flash, offset,
+ sector * CONFIG_ENV_SECT_SIZE);
if (ret)
goto done;
puts("Writing to SPI flash...");
- ret = spi_flash_write(env_flash, env_new_offset,
- CONFIG_ENV_SIZE, &env_new);
+ ret = spi_flash_write(env_flash, offset,
+ CONFIG_ENV_SIZE, &env_new);
if (ret)
goto done;
if (CONFIG_ENV_SECT_SIZE > CONFIG_ENV_SIZE) {
- ret = spi_flash_write(env_flash, saved_offset,
- saved_size, saved_buffer);
+ ret = spi_flash_write(env_flash, saved_offset, saved_size,
+ saved_buffer);
if (ret)
goto done;
}
- ret = spi_flash_write(env_flash, env_offset + offsetof(env_t, flags),
- sizeof(env_new.flags), &flag);
- if (ret)
- goto done;
+#if CONFIG_IS_ENABLED(SYS_REDUNDAND_ENVIRONMENT)
+ ret = spi_flash_write(env_flash, env_offset + offsetof(env_t, flags),
+ sizeof(env_new.flags), &flag);
+ if (ret)
+ goto done;
- puts("done\n");
+ puts("done\n");
- gd->env_valid = gd->env_valid == ENV_REDUND ? ENV_VALID : ENV_REDUND;
+ gd->env_valid = gd->env_valid == ENV_REDUND ? ENV_VALID : ENV_REDUND;
- printf("Valid environment: %d\n", (int)gd->env_valid);
+ printf("Valid environment: %d\n", (int)gd->env_valid);
+#else
+ puts("done\n");
+#endif
done:
if (saved_buffer)
@@ -146,6 +157,7 @@ static int env_sf_save(void)
return ret;
}
+#if CONFIG_IS_ENABLED(SYS_REDUNDAND_ENVIRONMENT)
static int env_sf_load(void)
{
int ret;
@@ -183,66 +195,6 @@ out:
return ret;
}
#else
-static int env_sf_save(void)
-{
- u32 saved_size, saved_offset, sector;
- char *saved_buffer = NULL;
- int ret = 1;
- env_t env_new;
-
- ret = setup_flash_device();
- if (ret)
- return ret;
-
- /* Is the sector larger than the env (i.e. embedded) */
- if (CONFIG_ENV_SECT_SIZE > CONFIG_ENV_SIZE) {
- saved_size = CONFIG_ENV_SECT_SIZE - CONFIG_ENV_SIZE;
- saved_offset = CONFIG_ENV_OFFSET + CONFIG_ENV_SIZE;
- saved_buffer = malloc(saved_size);
- if (!saved_buffer)
- goto done;
-
- ret = spi_flash_read(env_flash, saved_offset,
- saved_size, saved_buffer);
- if (ret)
- goto done;
- }
-
- ret = env_export(&env_new);
- if (ret)
- goto done;
-
- sector = DIV_ROUND_UP(CONFIG_ENV_SIZE, CONFIG_ENV_SECT_SIZE);
-
- puts("Erasing SPI flash...");
- ret = spi_flash_erase(env_flash, CONFIG_ENV_OFFSET,
- sector * CONFIG_ENV_SECT_SIZE);
- if (ret)
- goto done;
-
- puts("Writing to SPI flash...");
- ret = spi_flash_write(env_flash, CONFIG_ENV_OFFSET,
- CONFIG_ENV_SIZE, &env_new);
- if (ret)
- goto done;
-
- if (CONFIG_ENV_SECT_SIZE > CONFIG_ENV_SIZE) {
- ret = spi_flash_write(env_flash, saved_offset,
- saved_size, saved_buffer);
- if (ret)
- goto done;
- }
-
- ret = 0;
- puts("done\n");
-
- done:
- if (saved_buffer)
- free(saved_buffer);
-
- return ret;
-}
-
static int env_sf_load(void)
{
int ret;
@@ -258,8 +210,8 @@ static int env_sf_load(void)
if (ret)
goto out;
- ret = spi_flash_read(env_flash,
- CONFIG_ENV_OFFSET, CONFIG_ENV_SIZE, buf);
+ ret = spi_flash_read(env_flash, CONFIG_ENV_OFFSET, CONFIG_ENV_SIZE,
+ buf);
if (ret) {
env_set_default("spi_flash_read() failed", 0);
goto err_read;
@@ -292,7 +244,7 @@ static int env_sf_init(void)
env_t *env_ptr = (env_t *)env_sf_get_env_addr();
if (crc32(0, env_ptr->data, ENV_SIZE) == env_ptr->crc) {
- gd->env_addr = (ulong)&(env_ptr->data);
+ gd->env_addr = (ulong)&env_ptr->data;
gd->env_valid = 1;
} else {
gd->env_addr = (ulong)&default_environment[0];
--
2.29.0
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