Add arch_cpu_init(_dm) mainly to open the channel between ACore and SCU.
Signed-off-by: Peng Fan <peng....@nxp.com>
Cc: Stefano Babic <sba...@denx.de>
---
arch/arm/include/asm/arch-imx8/sys_proto.h | 9 ++++++
arch/arm/mach-imx/imx8/cpu.c | 51 ++++++++++++++++++++++++++++++
2 files changed, 60 insertions(+)
diff --git a/arch/arm/include/asm/arch-imx8/sys_proto.h
b/arch/arm/include/asm/arch-imx8/sys_proto.h
index f9a3016132..73ffaba7d5 100644
--- a/arch/arm/include/asm/arch-imx8/sys_proto.h
+++ b/arch/arm/include/asm/arch-imx8/sys_proto.h
@@ -6,5 +6,14 @@
#include <asm/mach-imx/sys_proto.h>
#include <linux/types.h>
+struct pass_over_info_t {
+ u16 barker;
+ u16 len;
+ u32 g_bt_cfg_shadow;
+ u32 card_address_mode;
+ u32 bad_block_count_met;
+ u32 g_ap_mu;
+};
+
enum boot_device get_boot_device(void);
int print_bootinfo(void);
diff --git a/arch/arm/mach-imx/imx8/cpu.c b/arch/arm/mach-imx/imx8/cpu.c
index 389f422be7..be5a8ee8ca 100644
--- a/arch/arm/mach-imx/imx8/cpu.c
+++ b/arch/arm/mach-imx/imx8/cpu.c
@@ -95,6 +95,57 @@ int print_cpuinfo(void)
}
#endif
+#define BT_PASSOVER_TAG 0x504F
+struct pass_over_info_t *get_pass_over_info(void)
+{
+ struct pass_over_info_t *p =
+ (struct pass_over_info_t *)PASS_OVER_INFO_ADDR;
+
+ if (p->barker != BT_PASSOVER_TAG ||
+ p->len != sizeof(struct pass_over_info_t))
+ return NULL;
+
+ return p;
+}
+
+int arch_cpu_init(void)
+{
+ struct pass_over_info_t *pass_over = get_pass_over_info();
+
+ if (pass_over && pass_over->g_ap_mu == 0) {
+ /*
+ * When ap_mu is 0, means the u-boot is boot
+ * from first container
+ */
+ sc_misc_boot_status(-1, SC_MISC_BOOT_STATUS_SUCCESS);
+ }
+
+ return 0;
+}
+
+int arch_cpu_init_dm(void)
+{
+ struct udevice *devp;
+ int node, ret;
+
+ node = fdt_node_offset_by_compatible(gd->fdt_blob, -1, "fsl,imx8-mu");
+ ret = device_bind_driver_to_node(gd->dm_root, "imx8_scu", "imx8_scu",
+ offset_to_ofnode(node), &devp);
+
+ if (ret) {
+ printf("could not find scu %d\n", ret);
+ return ret;
+ }
+
+ ret = device_probe(devp);
+ if (ret) {
+ printf("scu probe failed %d\n", ret);
+ return ret;
+ }
+
+ return 0;
+}
+
int print_bootinfo(void)
{
enum boot_device bt_dev = get_boot_device();
--
2.14.1
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