board: armltd: Add support for Total Compute platform

Total Compute is based on ARM architecture and has
the following features enabled in u-boot:
- PL011 UART
- PL180 MMC
- NOR Flash
- FIT image with Signature
- AVB

Signed-off-by: Usama Arif <usama.arif@arm.com>
Reviewed-by: Tom Rini <trini@konsulko.com>

include/configs/total_compute.h

@@ -0,0 +1,89 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Configuration for Total Compute platform. Parts were derived from other ARM
+ * configurations.
+ * (C) Copyright 2020 Arm Limited
+ * Usama Arif <usama.arif@arm.com>
+ */
+
+#ifndef __TOTAL_COMPUTE_H
+#define __TOTAL_COMPUTE_H
+
+#define CONFIG_REMAKE_ELF
+
+/* Link Definitions */
+#define CONFIG_SYS_INIT_SP_ADDR	(CONFIG_SYS_SDRAM_BASE + 0x7fff0)
+
+#define CONFIG_SYS_BOOTM_LEN	(64 << 20)
+
+#define UART0_BASE		0x7ff80000
+
+/* Size of malloc() pool */
+#define CONFIG_SYS_MALLOC_LEN	(CONFIG_ENV_SIZE + (8 << 20))
+
+/* PL011 Serial Configuration */
+#define CONFIG_PL011_CLOCK	7372800
+
+/* Miscellaneous configurable options */
+#define CONFIG_SYS_LOAD_ADDR	0x90000000
+
+/* Physical Memory Map */
+#define PHYS_SDRAM_1		0x80000000
+/* Top 48MB reserved for secure world use */
+#define DRAM_SEC_SIZE		0x03000000
+#define PHYS_SDRAM_1_SIZE	0x80000000 - DRAM_SEC_SIZE
+#define CONFIG_SYS_SDRAM_BASE	PHYS_SDRAM_1
+
+#define CONFIG_ARM_PL180_MMCI_BASE		0x001c050000
+#define CONFIG_SYS_MMC_MAX_BLK_COUNT		127
+#define CONFIG_ARM_PL180_MMCI_CLOCK_FREQ	12000000
+
+#define CONFIG_EXTRA_ENV_SETTINGS	\
+				"bootm_size=0x20000000\0"	\
+				"load_addr=0xa0000000\0"	\
+				"kernel_addr_r=0x80080000\0"	\
+				"initrd_addr_r=0x88000000\0"	\
+				"fdt_addr_r=0x83000000\0"
+/*
+ * If vbmeta partition is present, boot Android with verification using AVB.
+ * Else if system partition is present (no vbmeta partition), boot Android
+ * without verification (for development purposes).
+ * Else boot FIT image.
+ */
+#define CONFIG_BOOTCOMMAND	\
+				"if part number mmc 0 vbmeta is_avb; then" \
+				"  echo MMC with vbmeta partition detected.;" \
+				"  echo starting Android Verified boot.;" \
+				"  avb init 0; " \
+				"  if avb verify; then " \
+				"    set bootargs $bootargs $avb_bootargs; " \
+				"    part start mmc 0 boot boot_start; " \
+				"    part size mmc 0 boot boot_size; " \
+				"    mmc read ${load_addr} ${boot_start} ${boot_size}; " \
+				"    bootm ${load_addr} ${load_addr} ${fdt_addr_r}; " \
+				"  else; " \
+				"    echo AVB verification failed.; " \
+				"    exit; " \
+				"  fi; " \
+				"elif part number mmc 0 system is_non_avb_android; then " \
+				"  booti ${kernel_addr_r} ${initrd_addr_r} ${fdt_addr_r};" \
+				"else;" \
+				"  echo Booting FIT image.;" \
+				"  bootm ${load_addr} ${load_addr} ${fdt_addr_r}; " \
+				"fi;"
+
+/* Monitor Command Prompt */
+#define CONFIG_SYS_CBSIZE		512	/* Console I/O Buffer Size */
+#define CONFIG_SYS_MAXARGS		64	/* max command args */
+
+#define CONFIG_SYS_FLASH_BASE		0x0C000000
+/* 256 x 256KiB sectors */
+#define CONFIG_SYS_MAX_FLASH_SECT	256
+
+#define CONFIG_SYS_FLASH_CFI_WIDTH	FLASH_CFI_32BIT
+#define CONFIG_SYS_MAX_FLASH_BANKS	1
+
+#define CONFIG_SYS_FLASH_EMPTY_INFO	/* flinfo indicates empty blocks */
+#define FLASH_MAX_SECTOR_SIZE		0x00040000
+
+#endif /* __TOTAL_COMPUTE_H */