diff options
| -rw-r--r-- | arch/sandbox/cpu/os.c | 25 | ||||
| -rw-r--r-- | doc/arch/sandbox.rst | 7 | ||||
| -rw-r--r-- | drivers/rtc/i2c_rtc_emul.c | 4 | ||||
| -rw-r--r-- | include/os.h | 18 |
4 files changed, 53 insertions, 1 deletions
diff --git a/arch/sandbox/cpu/os.c b/arch/sandbox/cpu/os.c index 80996a9..3d8af0a 100644 --- a/arch/sandbox/cpu/os.c +++ b/arch/sandbox/cpu/os.c @@ -32,6 +32,9 @@ #include <os.h> #include <rtc_def.h> +/* Environment variable for time offset */ +#define ENV_TIME_OFFSET "UBOOT_SB_TIME_OFFSET" + /* Operating System Interface */ struct os_mem_hdr { @@ -798,6 +801,28 @@ int os_spl_to_uboot(const char *fname) return os_jump_to_file(fname); } +long os_get_time_offset(void) +{ + const char *offset; + + offset = getenv(ENV_TIME_OFFSET); + if (offset) + return strtol(offset, NULL, 0); + return 0; +} + +void os_set_time_offset(long offset) +{ + char buf[21]; + int ret; + + snprintf(buf, sizeof(buf), "%ld", offset); + ret = setenv(ENV_TIME_OFFSET, buf, true); + if (ret) + printf("Could not set environment variable %s\n", + ENV_TIME_OFFSET); +} + void os_localtime(struct rtc_time *rt) { time_t t = time(NULL); diff --git a/doc/arch/sandbox.rst b/doc/arch/sandbox.rst index 1a7801a..60ee1e0 100644 --- a/doc/arch/sandbox.rst +++ b/doc/arch/sandbox.rst @@ -131,6 +131,13 @@ available options. Some of these are described below: -i Go to interactive mode after executing the commands specified by -c. +Environment Variables +--------------------- + +UBOOT_SB_TIME_OFFSET + This environment variable stores the offset of the emulated real time clock + to the host's real time clock in seconds. The offset defaults to zero. + Memory Emulation ---------------- diff --git a/drivers/rtc/i2c_rtc_emul.c b/drivers/rtc/i2c_rtc_emul.c index 5a2a154..f25b976 100644 --- a/drivers/rtc/i2c_rtc_emul.c +++ b/drivers/rtc/i2c_rtc_emul.c @@ -57,6 +57,7 @@ long sandbox_i2c_rtc_set_offset(struct udevice *dev, bool use_system_time, plat->use_system_time = use_system_time; if (offset != -1) plat->offset = offset; + os_set_time_offset(plat->offset); return old_offset; } @@ -80,7 +81,7 @@ static void reset_time(struct udevice *dev) os_localtime(&now); plat->base_time = rtc_mktime(&now); - plat->offset = 0; + plat->offset = os_get_time_offset(); plat->use_system_time = true; } @@ -115,6 +116,7 @@ static int sandbox_i2c_rtc_set(struct udevice *dev, const struct rtc_time *time) now = plat->base_time; } plat->offset = rtc_mktime(time) - now; + os_set_time_offset(plat->offset); return 0; } diff --git a/include/os.h b/include/os.h index 0913b47..e192e32 100644 --- a/include/os.h +++ b/include/os.h @@ -424,4 +424,22 @@ int os_setup_signal_handlers(void); */ void os_signal_action(int sig, unsigned long pc); +/** + * os_get_time_offset() - get time offset + * + * Get the time offset from environment variable UBOOT_SB_TIME_OFFSET. + * + * Return: offset in seconds + */ +long os_get_time_offset(void); + +/** + * os_set_time_offset() - set time offset + * + * Save the time offset in environment variable UBOOT_SB_TIME_OFFSET. + * + * @offset: offset in seconds + */ +void os_set_time_offset(long offset); + #endif |