[U-Boot] [PATCH 4/4] env: common: accept flags on reset to default env
Yaniv Levinsky
yaniv.levinsky at compulab.co.il
Sun Jun 24 16:16:57 UTC 2018
The function set_default_env() sets the hashtable flags for import_r().
Formally set_default_env() doesn't accept flags from its callers. In
practice the caller can (un)set the H_INTERACTIVE flag, but it has to be
done using the first character of the function's string argument. Other
flags like H_FORCE can't be set by the caller.
Change the function to accept flags argument. The benefits are:
1. The caller will have to explicitly set the H_INTERACTIVE flag,
instead of un-setting it using a special char in a string.
2. Add the ability to propagate flags from the caller to himport(),
especially the H_FORCE flag from do_env_default() in nvedit.c that
currently gets ignored for "env default -a -f" commands.
3. Flags and messages will not be coupled together. A caller will be
able to set flags without passing a string and vice versa.
Please note:
The propagation of H_FORCE from do_env_default() does not introduce any
functional changes, because currently himport_r() is set to destroy the
old environment regardless if H_FORCE flag is set or not. More changes
are needed to utilize the propagation of H_FORCE.
Signed-off-by: Yaniv Levinsky <yaniv.levinsky at compulab.co.il>
Acked-by: Igor Grinberg <grinberg at compulab.co.il>
---
arch/arm/mach-imx/mx6/opos6ul.c | 2 +-
cmd/nvedit.c | 3 ++-
common/board_r.c | 2 +-
common/spl/spl_dfu.c | 2 +-
env/common.c | 22 +++++++++-------------
env/ext4.c | 2 +-
env/fat.c | 2 +-
env/mmc.c | 12 ++++++------
env/nand.c | 6 +++---
env/sata.c | 2 +-
env/sf.c | 10 +++++-----
env/ubi.c | 6 +++---
include/environment.h | 2 +-
13 files changed, 35 insertions(+), 38 deletions(-)
diff --git a/arch/arm/mach-imx/mx6/opos6ul.c b/arch/arm/mach-imx/mx6/opos6ul.c
index af3384d10e..94a3d71201 100644
--- a/arch/arm/mach-imx/mx6/opos6ul.c
+++ b/arch/arm/mach-imx/mx6/opos6ul.c
@@ -127,7 +127,7 @@ int board_late_init(void)
/* In bootstrap don't use the env vars */
if (((reg & 0x3000000) >> 24) == 0x1) {
- set_default_env(NULL);
+ set_default_env(NULL, 0);
env_set("preboot", "");
}
diff --git a/cmd/nvedit.c b/cmd/nvedit.c
index 8b73c606ca..796867c62c 100644
--- a/cmd/nvedit.c
+++ b/cmd/nvedit.c
@@ -802,7 +802,8 @@ static int do_env_default(cmd_tbl_t *cmdtp, int flag,
debug("Final value for argc=%d\n", argc);
if (all && (argc == 0)) {
/* Reset the whole environment */
- set_default_env("## Resetting to default environment\n");
+ set_default_env("## Resetting to default environment\n",
+ env_flag);
return 0;
}
if (!all && (argc > 0)) {
diff --git a/common/board_r.c b/common/board_r.c
index 6b297068bd..8495777953 100644
--- a/common/board_r.c
+++ b/common/board_r.c
@@ -454,7 +454,7 @@ static int initr_env(void)
if (should_load_env())
env_relocate();
else
- set_default_env(NULL);
+ set_default_env(NULL, 0);
#ifdef CONFIG_OF_CONTROL
env_set_addr("fdtcontroladdr", gd->fdt_blob);
#endif
diff --git a/common/spl/spl_dfu.c b/common/spl/spl_dfu.c
index b8e3a6c89e..01178f611f 100644
--- a/common/spl/spl_dfu.c
+++ b/common/spl/spl_dfu.c
@@ -38,7 +38,7 @@ int spl_dfu_cmd(int usbctrl, char *dfu_alt_info, char *interface, char *devstr)
int ret;
/* set default environment */
- set_default_env(0);
+ set_default_env(NULL, 0);
str_env = env_get(dfu_alt_info);
if (!str_env) {
pr_err("\"dfu_alt_info\" env variable not defined!\n");
diff --git a/env/common.c b/env/common.c
index 05183a4af0..1430100c85 100644
--- a/env/common.c
+++ b/env/common.c
@@ -58,22 +58,18 @@ char *env_get_default(const char *name)
return ret_val;
}
-void set_default_env(const char *s)
+void set_default_env(const char *s, int flags)
{
- int flags = 0;
-
if (sizeof(default_environment) > ENV_SIZE) {
puts("*** Error - default environment is too large\n\n");
return;
}
if (s) {
- if (*s == '!') {
+ if ((flags & H_INTERACTIVE) == 0) {
printf("*** Warning - %s, "
- "using default environment\n\n",
- s + 1);
+ "using default environment\n\n", s);
} else {
- flags = H_INTERACTIVE;
puts(s);
}
} else {
@@ -117,7 +113,7 @@ int env_import(const char *buf, int check)
memcpy(&crc, &ep->crc, sizeof(crc));
if (crc32(0, ep->data, ENV_SIZE) != crc) {
- set_default_env("!bad CRC");
+ set_default_env("bad CRC", 0);
return -EIO;
}
}
@@ -130,7 +126,7 @@ int env_import(const char *buf, int check)
pr_err("Cannot import environment: errno = %d\n", errno);
- set_default_env("!import failed");
+ set_default_env("import failed", 0);
return -EIO;
}
@@ -155,7 +151,7 @@ int env_import_redund(const char *buf1, int buf1_read_fail,
}
if (buf1_read_fail && buf2_read_fail) {
- set_default_env("!bad env area");
+ set_default_env("bad env area", 0);
return -EIO;
} else if (!buf1_read_fail && buf2_read_fail) {
gd->env_valid = ENV_VALID;
@@ -171,7 +167,7 @@ int env_import_redund(const char *buf1, int buf1_read_fail,
tmp_env2->crc;
if (!crc1_ok && !crc2_ok) {
- set_default_env("!bad CRC");
+ set_default_env("bad CRC", 0);
return -EIO;
} else if (crc1_ok && !crc2_ok) {
gd->env_valid = ENV_VALID;
@@ -233,10 +229,10 @@ void env_relocate(void)
if (gd->env_valid == ENV_INVALID) {
#if defined(CONFIG_ENV_IS_NOWHERE) || defined(CONFIG_SPL_BUILD)
/* Environment not changable */
- set_default_env(NULL);
+ set_default_env(NULL, 0);
#else
bootstage_error(BOOTSTAGE_ID_NET_CHECKSUM);
- set_default_env("!bad CRC");
+ set_default_env("bad CRC", 0);
#endif
} else {
env_load();
diff --git a/env/ext4.c b/env/ext4.c
index 7626784ca6..09c5e4a491 100644
--- a/env/ext4.c
+++ b/env/ext4.c
@@ -119,7 +119,7 @@ static int env_ext4_load(void)
return env_import(buf, 1);
err_env_relocate:
- set_default_env(NULL);
+ set_default_env(NULL, 0);
return -EIO;
}
diff --git a/env/fat.c b/env/fat.c
index 5e5b1efe89..7f74c64dfe 100644
--- a/env/fat.c
+++ b/env/fat.c
@@ -122,7 +122,7 @@ static int env_fat_load(void)
return env_import(buf, 1);
err_env_relocate:
- set_default_env(NULL);
+ set_default_env(NULL, 0);
return -EIO;
}
diff --git a/env/mmc.c b/env/mmc.c
index 5e3da6dca7..c3cf35d01b 100644
--- a/env/mmc.c
+++ b/env/mmc.c
@@ -155,19 +155,19 @@ static inline int mmc_set_env_part(struct mmc *mmc) {return 0; };
static const char *init_mmc_for_env(struct mmc *mmc)
{
if (!mmc)
- return "!No MMC card found";
+ return "No MMC card found";
#if CONFIG_IS_ENABLED(BLK)
struct udevice *dev;
if (blk_get_from_parent(mmc->dev, &dev))
- return "!No block device";
+ return "No block device";
#else
if (mmc_init(mmc))
- return "!MMC init failed";
+ return "MMC init failed";
#endif
if (mmc_set_env_part(mmc))
- return "!MMC partition switch failed";
+ return "MMC partition switch failed";
return NULL;
}
@@ -298,7 +298,7 @@ fini:
fini_mmc_for_env(mmc);
err:
if (ret)
- set_default_env(errmsg);
+ set_default_env(errmsg, 0);
#endif
return ret;
@@ -339,7 +339,7 @@ fini:
fini_mmc_for_env(mmc);
err:
if (ret)
- set_default_env(errmsg);
+ set_default_env(errmsg, 0);
#endif
return ret;
}
diff --git a/env/nand.c b/env/nand.c
index aecf445c21..3698e68957 100644
--- a/env/nand.c
+++ b/env/nand.c
@@ -327,7 +327,7 @@ static int env_nand_load(void)
tmp_env2 = (env_t *)malloc(CONFIG_ENV_SIZE);
if (tmp_env1 == NULL || tmp_env2 == NULL) {
puts("Can't allocate buffers for environment\n");
- set_default_env("!malloc() failed");
+ set_default_env("malloc() failed", 0);
ret = -EIO;
goto done;
}
@@ -366,14 +366,14 @@ static int env_nand_load(void)
if (mtd && !get_nand_env_oob(mtd, &nand_env_oob_offset)) {
printf("Found Environment offset in OOB..\n");
} else {
- set_default_env("!no env offset in OOB");
+ set_default_env("no env offset in OOB", 0);
return;
}
#endif
ret = readenv(CONFIG_ENV_OFFSET, (u_char *)buf);
if (ret) {
- set_default_env("!readenv() failed");
+ set_default_env("readenv() failed", 0);
return -EIO;
}
diff --git a/env/sata.c b/env/sata.c
index e5715e6d51..59aedf4d76 100644
--- a/env/sata.c
+++ b/env/sata.c
@@ -106,7 +106,7 @@ static void env_sata_load(void)
}
if (read_env(sata, CONFIG_ENV_SIZE, CONFIG_ENV_OFFSET, buf)) {
- set_default_env(NULL);
+ set_default_env(NULL, 0);
return -EIO;
}
diff --git a/env/sf.c b/env/sf.c
index 7f7f731992..494510533a 100644
--- a/env/sf.c
+++ b/env/sf.c
@@ -60,7 +60,7 @@ static int setup_flash_device(void)
ret = spi_flash_probe_bus_cs(CONFIG_ENV_SPI_BUS, CONFIG_ENV_SPI_CS,
0, 0, &new);
if (ret) {
- set_default_env("!spi_flash_probe_bus_cs() failed");
+ set_default_env("spi_flash_probe_bus_cs() failed", 0);
return ret;
}
@@ -72,7 +72,7 @@ static int setup_flash_device(void)
CONFIG_ENV_SPI_CS,
CONFIG_ENV_SPI_MAX_HZ, CONFIG_ENV_SPI_MODE);
if (!env_flash) {
- set_default_env("!spi_flash_probe() failed");
+ set_default_env("spi_flash_probe() failed", 0);
return -EIO;
}
}
@@ -173,7 +173,7 @@ static int env_sf_load(void)
tmp_env2 = (env_t *)memalign(ARCH_DMA_MINALIGN,
CONFIG_ENV_SIZE);
if (!tmp_env1 || !tmp_env2) {
- set_default_env("!malloc() failed");
+ set_default_env("malloc() failed", 0);
ret = -EIO;
goto out;
}
@@ -268,7 +268,7 @@ static int env_sf_load(void)
buf = (char *)memalign(ARCH_DMA_MINALIGN, CONFIG_ENV_SIZE);
if (!buf) {
- set_default_env("!malloc() failed");
+ set_default_env("malloc() failed", 0);
return -EIO;
}
@@ -279,7 +279,7 @@ static int env_sf_load(void)
ret = spi_flash_read(env_flash,
CONFIG_ENV_OFFSET, CONFIG_ENV_SIZE, buf);
if (ret) {
- set_default_env("!spi_flash_read() failed");
+ set_default_env("spi_flash_read() failed", 0);
goto err_read;
}
diff --git a/env/ubi.c b/env/ubi.c
index d28247b34d..eb2346f3a1 100644
--- a/env/ubi.c
+++ b/env/ubi.c
@@ -114,7 +114,7 @@ static int env_ubi_load(void)
if (ubi_part(CONFIG_ENV_UBI_PART, NULL)) {
printf("\n** Cannot find mtd partition \"%s\"\n",
CONFIG_ENV_UBI_PART);
- set_default_env(NULL);
+ set_default_env(NULL, 0);
return -EIO;
}
@@ -151,14 +151,14 @@ static int env_ubi_load(void)
if (ubi_part(CONFIG_ENV_UBI_PART, NULL)) {
printf("\n** Cannot find mtd partition \"%s\"\n",
CONFIG_ENV_UBI_PART);
- set_default_env(NULL);
+ set_default_env(NULL, 0);
return -EIO;
}
if (ubi_volume_read(CONFIG_ENV_UBI_VOLUME, buf, CONFIG_ENV_SIZE)) {
printf("\n** Unable to read env from %s:%s **\n",
CONFIG_ENV_UBI_PART, CONFIG_ENV_UBI_VOLUME);
- set_default_env(NULL);
+ set_default_env(NULL, 0);
return -EIO;
}
diff --git a/include/environment.h b/include/environment.h
index 2fe1f3eb48..5e90f157e8 100644
--- a/include/environment.h
+++ b/include/environment.h
@@ -272,7 +272,7 @@ void env_crc_update(void);
char *env_get_default(const char *name);
/* [re]set to the default environment */
-void set_default_env(const char *s);
+void set_default_env(const char *s, int flags);
/* [re]set individual variables to their value in the default environment */
int set_default_vars(int nvars, char * const vars[], int flags);
--
2.17.1
More information about the U-Boot
mailing list