Add the 'm4go' command to pcm052-based targets.
It loads scatter file images.
Signed-off-by: Albert ARIBAUD (3ADEV) <albert.arib...@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"
+);
--
2.9.3
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