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fastboot: add command to select the eMMC boot configuration

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Add command oem bootbus which executes the command
``mmc bootbus <id> <arg>`` on the current fastboot mmc device
(<i> = CONFIG_FASTBOOT_FLASH_MMC_DEV) to set the eMMC boot
configuration on first update, with
<arg> =  boot_bus_width reset_boot_bus_width boot_mode

$> fastboot oem bootbus:<boot_bus_width> <reset_boot_bus_width> <boot_mode>

Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
This commit is contained in:
Patrick Delaunay 2021-01-27 14:46:49 +01:00 • committed by Marek Vasut
parent b2f6b97b78
commit 0c0394b502
4 changed files with 47 additions and 0 deletions
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1
doc/android/fastboot.rst
View file

@ -25,6 +25,7 @@ The following OEM commands are supported (if enabled):
- ``oem format`` - this executes ``gpt write mmc %x $partitions``
- ``oem partconf`` - this executes ``mmc partconf %x <arg> 0`` to configure eMMC
with <arg> = boot_ack boot_partition
- ``oem bootbus`` - this executes ``mmc bootbus %x %s`` to configure eMMC
Support for both eMMC and NAND devices is included.

7
drivers/fastboot/Kconfig
View file

@ -196,6 +196,13 @@ config FASTBOOT_CMD_OEM_PARTCONF
Add support for the "oem partconf" command from a client. This set
the mmc boot-partition for the selecting eMMC device.
config FASTBOOT_CMD_OEM_BOOTBUS
bool "Enable the 'oem bootbus' command"
depends on FASTBOOT_FLASH_MMC && SUPPORT_EMMC_BOOT
help
Add support for the "oem bootbus" command from a client. This set
the mmc boot configuration for the selecting eMMC device.
endif # FASTBOOT
endmenu

36
drivers/fastboot/fb_command.c
View file

@ -45,6 +45,9 @@ static void oem_format(char *, char *);
#if CONFIG_IS_ENABLED(FASTBOOT_CMD_OEM_PARTCONF)
static void oem_partconf(char *, char *);
#endif
#if CONFIG_IS_ENABLED(FASTBOOT_CMD_OEM_BOOTBUS)
static void oem_bootbus(char *, char *);
#endif
static const struct {
const char *command;
@ -108,6 +111,12 @@ static const struct {
.dispatch = oem_partconf,
},
#endif
#if CONFIG_IS_ENABLED(FASTBOOT_CMD_OEM_BOOTBUS)
[FASTBOOT_COMMAND_OEM_BOOTBUS] = {
.command = "oem bootbus",
.dispatch = oem_bootbus,
},
#endif
};
/**
@ -410,3 +419,30 @@ static void oem_partconf(char *cmd_parameter, char *response)
fastboot_okay(NULL, response);
}
#endif
#if CONFIG_IS_ENABLED(FASTBOOT_CMD_OEM_BOOTBUS)
/**
* oem_bootbus() - Execute the OEM bootbus command
*
* @cmd_parameter: Pointer to command parameter
* @response: Pointer to fastboot response buffer
*/
static void oem_bootbus(char *cmd_parameter, char *response)
{
char cmdbuf[32];
if (!cmd_parameter) {
fastboot_fail("Expected command parameter", response);
return;
}
/* execute 'mmc bootbus' command with cmd_parameter arguments*/
snprintf(cmdbuf, sizeof(cmdbuf), "mmc bootbus %x %s",
CONFIG_FASTBOOT_FLASH_MMC_DEV, cmd_parameter);
printf("Execute: %s\n", cmdbuf);
if (run_command(cmdbuf, 0))
fastboot_fail("Cannot set oem bootbus", response);
else
fastboot_okay(NULL, response);
}
#endif

3
include/fastboot.h
View file

@ -41,6 +41,9 @@ enum {
#if CONFIG_IS_ENABLED(FASTBOOT_CMD_OEM_PARTCONF)
FASTBOOT_COMMAND_OEM_PARTCONF,
#endif
#if CONFIG_IS_ENABLED(FASTBOOT_CMD_OEM_BOOTBUS)
FASTBOOT_COMMAND_OEM_BOOTBUS,
#endif
FASTBOOT_COMMAND_COUNT
};