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cmd_sata: implement sata stop command 

Implement sata stop command.
This introduces the __sata_stop() weak function, which mirrors
the weak __sata_initialize() function, giving users the option of
undoing the custom steps performed in overrides of sata_initialize().

Signed-off-by: Nikita Kiryanov <nikita@compulab.co.il>
Cc: Marek Vasut <marex@denx.de>
Cc: Tom Rini <trini@ti.com>
This commit is contained in:
Nikita Kiryanov 2014-11-21 12:47:24 +02:00 committed by Stefano Babic
parent 10ee8ecafb
commit d957c28a7e
2 changed files with 25 additions and 1 deletions
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24
common/cmd_sata.c
View File

@ -48,6 +48,20 @@ int __sata_initialize(void)
}
int sata_initialize(void) __attribute__((weak,alias("__sata_initialize")));
__weak int __sata_stop(void)
{
int i, err = 0;
for (i = 0; i < CONFIG_SYS_SATA_MAX_DEVICE; i++)
err |= reset_sata(i);
if (err)
printf("Could not reset some SATA devices\n");
return err;
}
int sata_stop(void) __attribute__((weak, alias("__sata_stop")));
#ifdef CONFIG_PARTITIONS
block_dev_desc_t *sata_get_dev(int dev)
{
@ -59,8 +73,15 @@ static int do_sata(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
int rc = 0;
if (argc == 2 && strcmp(argv[1], "init") == 0)
if (argc == 2 && strcmp(argv[1], "stop") == 0)
return sata_stop();
if (argc == 2 && strcmp(argv[1], "init") == 0) {
if (sata_curr_device != -1)
sata_stop();
return sata_initialize();
}
/* If the user has not yet run `sata init`, do it now */
if (sata_curr_device == -1)
@ -185,6 +206,7 @@ U_BOOT_CMD(
sata, 5, 1, do_sata,
"SATA sub system",
"init - init SATA sub system\n"
"sata stop - disable SATA sub system\n"
"sata info - show available SATA devices\n"
"sata device [dev] - show or set current device\n"
"sata part [dev] - print partition table\n"

2
include/sata.h
View File

@ -10,6 +10,8 @@ ulong sata_write(int dev, ulong blknr, lbaint_t blkcnt, const void *buffer);
int sata_initialize(void);
int __sata_initialize(void);
int sata_stop(void);
int __sata_stop(void);
int sata_port_status(int dev, int port);
extern block_dev_desc_t sata_dev_desc[];