stm32mp2: initial support
Add initial support for STM32MP2 SoCs family.
SoCs information are available here :
https://www.st.com/content/st_com/en/campaigns/microprocessor-stm32mp2.html
Migrate all MP1 related code into stm32mp1/ directory
Create stm32mp2 directory dedicated for STM32MP2 SoCs.
Common code to MP1, MP13 and MP25 is kept into
arch/arm/mach-stm32/mach-stm32mp directory :
- boot_params.c
- bsec
- cmd_stm32key
- cmd_stm32prog
- dram_init.c
- syscon.c
- ecdsa_romapi.c
For STM32MP2, it also :
- adds memory region description needed for ARMv8 MMU.
- enables early data cache before relocation.
During the transition before/after relocation, the MMU, initially setup
at the beginning of DDR, must be setup again at a correct address after
relocation. This is done in enables_caches() by disabling cache, force
arch.tlb_fillptr to NULL which will force the MMU to be setup again but
with a new value for gd->arch.tlb_addr. gd->arch.tlb_addr has been
updated after relocation in arm_reserve_mmu().
Signed-off-by: Patrice Chotard <patrice.chotard@foss.st.com>
Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
diff --git a/board/st/stm32mp2/Kconfig b/board/st/stm32mp2/Kconfig
new file mode 100644
index 0000000..89039f0
--- /dev/null
+++ b/board/st/stm32mp2/Kconfig
@@ -0,0 +1,13 @@
+if TARGET_ST_STM32MP25X
+
+config SYS_BOARD
+ default "stm32mp2"
+
+config SYS_VENDOR
+ default "st"
+
+config SYS_CONFIG_NAME
+ default "stm32mp25_common"
+
+source "board/st/common/Kconfig"
+endif
diff --git a/board/st/stm32mp2/MAINTAINERS b/board/st/stm32mp2/MAINTAINERS
new file mode 100644
index 0000000..e6bea91
--- /dev/null
+++ b/board/st/stm32mp2/MAINTAINERS
@@ -0,0 +1,9 @@
+STM32MP2 BOARD
+M: Patrice Chotard <patrice.chotard@st.com>
+M: Patrick Delaunay <patrick.delaunay@st.com>
+L: uboot-stm32@st-md-mailman.stormreply.com (moderated for non-subscribers)
+S: Maintained
+F: arch/arm/dts/stm32mp25*
+F: board/st/stm32mp2/
+F: configs/stm32mp25_defconfig
+F: include/configs/stm32mp25_common.h
diff --git a/board/st/stm32mp2/Makefile b/board/st/stm32mp2/Makefile
new file mode 100644
index 0000000..50352fb
--- /dev/null
+++ b/board/st/stm32mp2/Makefile
@@ -0,0 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0-or-later OR BSD-3-Clause
+#
+# Copyright (C) 2023, STMicroelectronics - All Rights Reserved
+#
+
+obj-y += stm32mp2.o
diff --git a/board/st/stm32mp2/stm32mp2.c b/board/st/stm32mp2/stm32mp2.c
new file mode 100644
index 0000000..132c511
--- /dev/null
+++ b/board/st/stm32mp2/stm32mp2.c
@@ -0,0 +1,52 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR BSD-3-Clause
+/*
+ * Copyright (C) 2023, STMicroelectronics - All Rights Reserved
+ */
+
+#define LOG_CATEGORY LOGC_BOARD
+
+#include <common.h>
+#include <config.h>
+#include <env.h>
+#include <fdt_support.h>
+#include <asm/global_data.h>
+#include <asm/arch/sys_proto.h>
+
+/*
+ * Get a global data pointer
+ */
+DECLARE_GLOBAL_DATA_PTR;
+
+/* board dependent setup after realloc */
+int board_init(void)
+{
+ return 0;
+}
+
+int board_late_init(void)
+{
+ const void *fdt_compat;
+ int fdt_compat_len;
+ char dtb_name[256];
+ int buf_len;
+
+ if (IS_ENABLED(CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG)) {
+ fdt_compat = fdt_getprop(gd->fdt_blob, 0, "compatible",
+ &fdt_compat_len);
+ if (fdt_compat && fdt_compat_len) {
+ if (strncmp(fdt_compat, "st,", 3) != 0) {
+ env_set("board_name", fdt_compat);
+ } else {
+ env_set("board_name", fdt_compat + 3);
+
+ buf_len = sizeof(dtb_name);
+ strlcpy(dtb_name, fdt_compat + 3, buf_len);
+ buf_len -= strlen(fdt_compat + 3);
+ strlcat(dtb_name, ".dtb", buf_len);
+ env_set("fdtfile", dtb_name);
+ }
+ }
+ }
+
+ return 0;
+}