Add the 'm4go' command to pcm052-based targets. It loads scatter file images.
Signed-off-by: Albert ARIBAUD (3ADEV) albert.aribaud@3adev.fr ---
board/phytec/pcm052/pcm052.c | 38 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 38 insertions(+)
diff --git a/board/phytec/pcm052/pcm052.c b/board/phytec/pcm052/pcm052.c index e4f61e1..7341899 100644 --- a/board/phytec/pcm052/pcm052.c +++ b/board/phytec/pcm052/pcm052.c @@ -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" +);