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pcm052: add 'm4go' command

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Add the 'm4go' command to pcm052-based targets.
It loads scatter file images.

Signed-off-by: Albert ARIBAUD (3ADEV) <albert.aribaud@3adev.fr>
This commit is contained in:
Albert ARIBAUD \(3ADEV\) 2016-09-26 09:08:05 +02:00 committed by Stefano Babic
parent 083e4fd401
commit 303a24435f
1 changed files with 38 additions and 0 deletions
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38
board/phytec/pcm052/pcm052.c
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@ -513,3 +513,41 @@ int checkboard(void)
return 0;
}
static int do_m4go(cmd_tbl_t *cmdtp, int flag, int argc,
char * const argv[])
{
ulong addr;
/* Consume 'm4go' */
argc--; argv++;
/*
* Parse provided address - default to load_addr in case not provided.
*/
if (argc)
addr = simple_strtoul(argv[0], NULL, 16);
else
addr = load_addr;
/*
* Write boot address in PERSISTENT_ENTRY1[31:0] aka SRC_GPR2[31:0]
*/
writel(addr + 0x401, 0x4006E028);
/*
* Start secondary processor by enabling its clock
*/
writel(0x15a5a, 0x4006B08C);
return 1;
}
U_BOOT_CMD(
m4go, 2 /* one arg max */, 1 /* repeatable */, do_m4go,
"start the secondary Cortex-M4 from scatter file image",
"[<addr>]\n"
" - start secondary Cortex-M4 core using a scatter file image\n"
"The argument needs to be a scatter file\n"
);