configs: introduce configs for the am62a

Introduce the minimum configs, only SD-MMC and UART boot related
settings, to serve as a good starting point for the am62a as we add more
functionality.

Signed-off-by: Bryan Brattlof <bb@ti.com>

1 files changed, 101 insertions, 0 deletions

diff --git a/include/configs/am62ax_evm.h b/include/configs/am62ax_evm.h
new file mode 100644
index 0000000000..4cbd41e726
--- /dev/null
+++ b/include/configs/am62ax_evm.h
@@ -0,0 +1,101 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Configuration header file for K3 AM62Ax SoC family
+ *
+ * Copyright (C) 2022 Texas Instruments Incorporated - https://www.ti.com/
+ */
+
+#ifndef __CONFIG_AM62AX_EVM_H
+#define __CONFIG_AM62AX_EVM_H
+
+#include <linux/sizes.h>
+#include <config_distro_bootcmd.h>
+#include <environment/ti/mmc.h>
+#include <environment/ti/k3_dfu.h>
+
+/* DDR Configuration */
+#define CONFIG_SYS_SDRAM_BASE1		0x880000000
+
+#ifdef CONFIG_SYS_K3_SPL_ATF
+#define CONFIG_SPL_FS_LOAD_PAYLOAD_NAME	"tispl.bin"
+#endif
+
+#if defined(CONFIG_TARGET_AM62A7_A53_EVM)
+#define CONFIG_SPL_MAX_SIZE		SZ_1M
+#define CONFIG_SYS_INIT_SP_ADDR         (CONFIG_SPL_TEXT_BASE + SZ_4M)
+#else
+#define CONFIG_SPL_MAX_SIZE		CONFIG_SYS_K3_MAX_DOWNLODABLE_IMAGE_SIZE
+/*
+ * Maximum size in memory allocated to the SPL BSS. Keep it as tight as
+ * possible (to allow the build to go through), as this directly affects
+ * our memory footprint. The less we use for BSS the more we have available
+ * for everything else.
+ */
+#define CONFIG_SPL_BSS_MAX_SIZE		0x3000
+/*
+ * Link BSS to be within SPL in a dedicated region located near the top of
+ * the MCU SRAM, this way making it available also before relocation. Note
+ * that we are not using the actual top of the MCU SRAM as there is a memory
+ * location allocated for Device Manager data and some memory filled in by
+ * the boot ROM that we want to read out without any interference from the
+ * C context.
+ */
+#define CONFIG_SPL_BSS_START_ADDR	(0x43c3e000 -\
+					 CONFIG_SPL_BSS_MAX_SIZE)
+/* Set the stack right below the SPL BSS section */
+#define CONFIG_SYS_INIT_SP_ADDR         0x43c3a7f0
+/* Configure R5 SPL post-relocation malloc pool in DDR */
+#define CONFIG_SYS_SPL_MALLOC_START    0x84000000
+#define CONFIG_SYS_SPL_MALLOC_SIZE     SZ_16M
+#endif
+
+#define PARTS_DEFAULT \
+	/* Linux partitions */ \
+	"name=rootfs,start=0,size=-,uuid=${uuid_gpt_rootfs}\0" \
+
+/* U-Boot general configuration */
+#define EXTRA_ENV_AM62A7_BOARD_SETTINGS					\
+	"default_device_tree=" CONFIG_DEFAULT_DEVICE_TREE ".dtb\0"	\
+	"findfdt="							\
+		"setenv name_fdt ${default_device_tree};"		\
+		"setenv fdtfile ${name_fdt}\0"				\
+	"name_kern=Image\0"						\
+	"console=ttyS2,115200n8\0"					\
+	"args_all=setenv optargs earlycon=ns16550a,mmio32,0x02800000 "	\
+		"${mtdparts}\0"						\
+	"run_kern=booti ${loadaddr} ${rd_spec} ${fdtaddr}\0"
+
+/* U-Boot MMC-specific configuration */
+#define EXTRA_ENV_AM62A7_BOARD_SETTINGS_MMC				\
+	"boot=mmc\0"							\
+	"mmcdev=1\0"							\
+	"bootpart=1:2\0"						\
+	"bootdir=/boot\0"						\
+	"rd_spec=-\0"							\
+	"init_mmc=run args_all args_mmc\0"				\
+	"get_fdt_mmc=load mmc ${bootpart} ${fdtaddr} ${bootdir}/${name_fdt}\0" \
+	"get_overlay_mmc="						\
+		"fdt address ${fdtaddr};"				\
+		"fdt resize 0x100000;"					\
+		"for overlay in $name_overlays;"			\
+		"do;"							\
+		"load mmc ${bootpart} ${dtboaddr} ${bootdir}/${overlay} && "	\
+		"fdt apply ${dtboaddr};"				\
+		"done;\0"						\
+	"get_kern_mmc=load mmc ${bootpart} ${loadaddr} "		\
+		"${bootdir}/${name_kern}\0"				\
+	"get_fit_mmc=load mmc ${bootpart} ${addr_fit} "			\
+		"${bootdir}/${name_fit}\0"				\
+	"partitions=" PARTS_DEFAULT
+
+/* Incorporate settings into the U-Boot environment */
+#define CONFIG_EXTRA_ENV_SETTINGS					\
+	DEFAULT_LINUX_BOOT_ENV						\
+	DEFAULT_MMC_TI_ARGS						\
+	EXTRA_ENV_AM62A7_BOARD_SETTINGS					\
+	EXTRA_ENV_AM62A7_BOARD_SETTINGS_MMC				\
+
+/* Now for the remaining common defines */
+#include <configs/ti_armv7_common.h>
+
+#endif /* __CONFIG_AM62A7_EVM_H */