x86: samus: Add a target to boot through TPL

Add a version of samus which supports booting from TPL to SPL and then
to U-Boot. This allows TPL to select from an A or B SPL to support
verified boot with field upgrade.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>

board/google/Kconfig

@@ -52,6 +52,14 @@ config TARGET_CHROMEBOOK_SAMUS
 	  Chrome OS EC connected on LPC, and it provides a 2560x1700 high
 	  resolution touch-enabled LCD display.
 
+config TARGET_CHROMEBOOK_SAMUS_TPL
+	bool "Chromebook samus booting from TPL"
+	help
+	  This is a version of Samus which boots into TPL, then to SPL and
+	  U-Boot proper. This is useful where verified boot must select
+	  between different A/B versions of SPL/U-Boot, to allow upgrading of
+	  almost all U-Boot code in the field.
+
 endchoice
 
 source "board/google/chromebook_link/Kconfig"

board/google/chromebook_samus/Kconfig

@@ -1,4 +1,4 @@
-if TARGET_CHROMEBOOK_SAMUS
+if TARGET_CHROMEBOOK_SAMUS || TARGET_CHROMEBOOK_SAMUS_TPL
 
 config SYS_BOARD
 	default "chromebook_samus"
@@ -10,7 +10,8 @@ config SYS_SOC
 	default "broadwell"
 
 config SYS_CONFIG_NAME
-	default "chromebook_samus"
+	default "chromebook_samus" if TARGET_CHROMEBOOK_SAMUS
+	default "chromebook_samus" if TARGET_CHROMEBOOK_SAMUS_TPL
 
 config SYS_TEXT_BASE
 	default 0xffe00000
@@ -39,3 +40,12 @@ config SYS_CAR_SIZE
 	default 0x40000
 
 endif
+
+if TARGET_CHROMEBOOK_SAMUS_TPL
+
+config BOARD_SPECIFIC_OPTIONS_TPL # dummy
+	def_bool y
+	select SPL
+	select TPL
+
+endif

board/google/chromebook_samus/MAINTAINERS

@@ -4,3 +4,10 @@ S:	Maintained
 F:	board/google/chromebook_samus/
 F:	include/configs/chromebook_samus.h
 F:	configs/chromebook_samus_defconfig
+
+CHROMEBOOK SAMUS TPL BOARD
+M:	Simon Glass <sjg@chromium.org>
+S:	Maintained
+F:	board/google/chromebook_samus/
+F:	include/configs/chromebook_samus.h
+F:	configs/chromebook_samus_tpl_defconfig

configs/chromebook_samus_tpl_defconfig

@@ -0,0 +1,82 @@
+CONFIG_X86=y
+CONFIG_SYS_TEXT_BASE=0xffed0000
+CONFIG_SYS_MALLOC_F_LEN=0x1a00
+CONFIG_NR_DRAM_BANKS=8
+CONFIG_DEBUG_UART_BOARD_INIT=y
+CONFIG_DEBUG_UART_BASE=0x3f8
+CONFIG_DEBUG_UART_CLOCK=1843200
+CONFIG_VENDOR_GOOGLE=y
+CONFIG_TARGET_CHROMEBOOK_SAMUS_TPL=y
+CONFIG_DEBUG_UART=y
+CONFIG_HAVE_MRC=y
+CONFIG_HAVE_REFCODE=y
+CONFIG_SMP=y
+CONFIG_HAVE_VGA_BIOS=y
+CONFIG_BOOTSTAGE=y
+CONFIG_BOOTSTAGE_REPORT=y
+CONFIG_USE_BOOTARGS=y
+CONFIG_BOOTARGS="root=/dev/sdb3 init=/sbin/init rootwait ro"
+CONFIG_SYS_CONSOLE_INFO_QUIET=y
+CONFIG_MISC_INIT_R=y
+CONFIG_DISPLAY_BOARDINFO_LATE=y
+CONFIG_LAST_STAGE_INIT=y
+CONFIG_BLOBLIST=y
+CONFIG_BLOBLIST_SIZE=0x1000
+CONFIG_BLOBLIST_ADDR=0xff7c0000
+CONFIG_HANDOFF=y
+CONFIG_SPL_TEXT_BASE=0xffe70000
+CONFIG_SPL_SEPARATE_BSS=y
+CONFIG_SPL_NET_SUPPORT=y
+CONFIG_SPL_PCI=y
+CONFIG_SPL_PCH_SUPPORT=y
+CONFIG_TPL_PCI=y
+CONFIG_TPL_PCH_SUPPORT=y
+CONFIG_HUSH_PARSER=y
+CONFIG_CMD_CPU=y
+# CONFIG_CMD_FLASH is not set
+CONFIG_CMD_GPIO=y
+CONFIG_CMD_I2C=y
+CONFIG_CMD_PART=y
+CONFIG_CMD_SATA=y
+CONFIG_CMD_SF=y
+CONFIG_CMD_SPI=y
+CONFIG_CMD_USB=y
+# CONFIG_CMD_SETEXPR is not set
+CONFIG_CMD_TIME=y
+CONFIG_CMD_SOUND=y
+CONFIG_CMD_BOOTSTAGE=y
+CONFIG_CMD_TPM=y
+CONFIG_CMD_TPM_TEST=y
+CONFIG_CMD_EXT2=y
+CONFIG_CMD_EXT4=y
+CONFIG_CMD_EXT4_WRITE=y
+CONFIG_CMD_FAT=y
+CONFIG_CMD_FS_GENERIC=y
+CONFIG_MAC_PARTITION=y
+# CONFIG_SPL_MAC_PARTITION is not set
+# CONFIG_SPL_DOS_PARTITION is not set
+CONFIG_ISO_PARTITION=y
+CONFIG_EFI_PARTITION=y
+# CONFIG_SPL_EFI_PARTITION is not set
+CONFIG_DEFAULT_DEVICE_TREE="chromebook_samus"
+# CONFIG_NET is not set
+CONFIG_REGMAP=y
+CONFIG_SYSCON=y
+CONFIG_CPU=y
+CONFIG_DM_I2C=y
+CONFIG_SYS_I2C_DW=y
+CONFIG_TPL_MISC=y
+CONFIG_CROS_EC=y
+CONFIG_CROS_EC_LPC=y
+CONFIG_SYS_NS16550=y
+CONFIG_SOUND=y
+CONFIG_SOUND_I8254=y
+CONFIG_SOUND_RT5677=y
+CONFIG_SPI=y
+CONFIG_TPM_TIS_LPC=y
+CONFIG_USB_STORAGE=y
+CONFIG_USB_KEYBOARD=y
+CONFIG_FRAMEBUFFER_SET_VESA_MODE=y
+CONFIG_FRAMEBUFFER_VESA_MODE_11A=y
+CONFIG_CONSOLE_SCROLL_LINES=5
+CONFIG_TPM=y

include/configs/chromebook_samus.h

@@ -23,4 +23,6 @@
 #define CONFIG_ENV_SECT_SIZE		0x1000
 #define CONFIG_ENV_OFFSET		0x003f8000
 
+#define CONFIG_TPL_TEXT_BASE		0xfffd8000
+
 #endif	/* __CONFIG_H */