imx: imx8: bootaux: Add i.MX8 M4 boot support
1. Implement bootaux for the M4 boot on i.MX8QM and QXP. Users need to download
M4 image to any DDR address first. Then use the
"bootaux <M4 download DDR address> [M4 core id]" to boot CM4_0
or CM4_1, the default core id is 0 for CM4_0.
Since current M4 only supports running in TCM. The bootaux will copy
the M4 image from DDR to its TCML.
2. Implment bootaux for HIFI on QXP
command: bootaux 0x81000000 1
Signed-off-by: Ye Li <ye.li@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
diff --git a/arch/arm/mach-imx/imx_bootaux.c b/arch/arm/mach-imx/imx_bootaux.c
index ab7a41f..f7b14ca 100644
--- a/arch/arm/mach-imx/imx_bootaux.c
+++ b/arch/arm/mach-imx/imx_bootaux.c
@@ -14,6 +14,7 @@
#include <linux/compiler.h>
#include <cpu_func.h>
+#ifndef CONFIG_IMX8
/* Just to avoid build error */
#if IS_ENABLED(CONFIG_IMX8M)
#define SRC_M4C_NON_SCLR_RST_MASK BIT(0)
@@ -158,7 +159,7 @@
return 1;
}
-
+#endif
/*
* To i.MX6SX and i.MX7D, the image supported by bootaux needs
* the reset vector at the head for the image, with SP and PC
@@ -177,11 +178,15 @@
{
ulong addr;
int ret, up;
+ u32 core = 0;
if (argc < 2)
return CMD_RET_USAGE;
- up = arch_auxiliary_core_check_up(0);
+ if (argc > 2)
+ core = simple_strtoul(argv[2], NULL, 10);
+
+ up = arch_auxiliary_core_check_up(core);
if (up) {
printf("## Auxiliary core is already up\n");
return CMD_RET_SUCCESS;
@@ -192,7 +197,7 @@
if (!addr)
return CMD_RET_FAILURE;
- ret = arch_auxiliary_core_up(0, addr);
+ ret = arch_auxiliary_core_up(core, addr);
if (ret)
return CMD_RET_FAILURE;
@@ -202,5 +207,7 @@
U_BOOT_CMD(
bootaux, CONFIG_SYS_MAXARGS, 1, do_bootaux,
"Start auxiliary core",
- ""
+ "<address> [<core>]\n"
+ " - start auxiliary core [<core>] (default 0),\n"
+ " at address <address>\n"
);