From eb6c71b56282d3054dbffb83793e7d2c6745578e Mon Sep 17 00:00:00 2001 From: Simon Glass Date: Mon, 14 Aug 2023 16:40:37 -0600 Subject: expo: cedit: Support writing settings to CMOS RAM Add a command to write cedit settings to CMOS RAM so that it can be preserved across a reboot. This uses a simple bit-encoding, where each field has a 'bit position' and a 'bit length' in the schema. Signed-off-by: Simon Glass --- cmd/cedit.c | 36 ++++++++++++++++++++++++++++++++++++ 1 file changed, 36 insertions(+) (limited to 'cmd') diff --git a/cmd/cedit.c b/cmd/cedit.c index b2548f44b57..95d5c22c2f7 100644 --- a/cmd/cedit.c +++ b/cmd/cedit.c @@ -10,6 +10,7 @@ #include #include #include +#include #include #include #include @@ -176,6 +177,39 @@ static int do_cedit_read_env(struct cmd_tbl *cmdtp, int flag, int argc, return 0; } +static int do_cedit_write_cmos(struct cmd_tbl *cmdtp, int flag, int argc, + char *const argv[]) +{ + struct udevice *dev; + bool verbose = false; + int ret; + + if (check_cur_expo()) + return CMD_RET_FAILURE; + + if (argc > 1 && !strcmp(argv[1], "-v")) { + verbose = true; + argc--; + argv++; + } + + if (argc > 1) + ret = uclass_get_device_by_name(UCLASS_RTC, argv[1], &dev); + else + ret = uclass_first_device_err(UCLASS_RTC, &dev); + if (ret) { + printf("Failed to get RTC device: %dE\n", ret); + return CMD_RET_FAILURE; + } + + if (cedit_write_settings_cmos(cur_exp, dev, verbose)) { + printf("Failed to write settings to CMOS\n"); + return CMD_RET_FAILURE; + } + + return 0; +} + static int do_cedit_run(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[]) { @@ -209,6 +243,7 @@ static char cedit_help_text[] = "cedit write_fdt - write settings\n" "cedit read_env [-v] - read settings from env vars\n" "cedit write_env [-v] - write settings to env vars\n" + "cedit write_cmos [-v] [dev] - write settings to CMOS RAM\n" "cedit run - run config editor"; #endif /* CONFIG_SYS_LONGHELP */ @@ -218,5 +253,6 @@ U_BOOT_CMD_WITH_SUBCMDS(cedit, "Configuration editor", cedit_help_text, U_BOOT_SUBCMD_MKENT(write_fdt, 5, 1, do_cedit_write_fdt), U_BOOT_SUBCMD_MKENT(read_env, 2, 1, do_cedit_read_env), U_BOOT_SUBCMD_MKENT(write_env, 2, 1, do_cedit_write_env), + U_BOOT_SUBCMD_MKENT(write_cmos, 2, 1, do_cedit_write_cmos), U_BOOT_SUBCMD_MKENT(run, 1, 1, do_cedit_run), ); -- cgit v1.3.1