[U-Boot] [PATCH v4 04/10] vexpress64: fvp dram: add DRAM configuration

[Ryan Harkin]

Create an additional FVP configuration to boot images pre-loaded into
DRAM.

Sometimes it's preferential to boot the model by loading the files
directly into DRAM via model parameters, rather than using
SemiHosting.

An example of model parmaters that are used to pre-load the files
into DRAM:
    --data cluster0.cpu0=Image at 0x80080000 \
    --data cluster0.cpu0=fvp-base-gicv2-psci.dtb at 0x83000000 \
    --data cluster0.cpu0=uInitrd at 0x84000000

Signed-off-by: Ryan Harkin <ryan.harkin at linaro.org>
Reviewed-by: Linus Walleij <linus.walleij at linaro.org>
---
 arch/arm/Kconfig                       |  9 +++++++++
 board/armltd/vexpress64/MAINTAINERS    |  5 +++++
 configs/vexpress_aemv8a_dram_defconfig | 19 +++++++++++++++++++
 include/configs/vexpress_aemv8a.h      | 25 +++++++++++++++++++++++--
 4 files changed, 56 insertions(+), 2 deletions(-)

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 0b07e08..9e7be74 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -563,6 +563,15 @@ config TARGET_VEXPRESS64_BASE_FVP
 	select ARM64
 	select SEMIHOSTING
 
+config TARGET_VEXPRESS64_BASE_FVP_DRAM
+	bool "Support Versatile Express ARMv8a FVP BASE model booting from DRAM"
+	select ARM64
+	help
+	  This target is derived from TARGET_VEXPRESS64_BASE_FVP and over-rides
+	  the default config to allow the user to load the images directly into
+	  DRAM using model parameters rather than by using semi-hosting to load
+	  the files from the host filesystem.
+
 config TARGET_VEXPRESS64_JUNO
 	bool "Support Versatile Express Juno Development Platform"
 	select ARM64
diff --git a/board/armltd/vexpress64/MAINTAINERS b/board/armltd/vexpress64/MAINTAINERS
index 0ba044d..15b0a08 100644
--- a/board/armltd/vexpress64/MAINTAINERS
+++ b/board/armltd/vexpress64/MAINTAINERS
@@ -10,6 +10,11 @@ M:	Linus Walleij <linus.walleij at linaro.org>
 S:	Maintained
 F:	configs/vexpress_aemv8a_semi_defconfig
 
+VEXPRESS_AEMV8A_DRAM BOARD
+M:	Ryan Harkin <ryan.harkin at linaro.org>
+S:	Maintained
+F:	configs/vexpress_aemv8a_dram_defconfig
+
 JUNO DEVELOPMENT PLATFORM BOARD
 M:	Linus Walleij <linus.walleij at linaro.org>
 S:	Maintained
diff --git a/configs/vexpress_aemv8a_dram_defconfig b/configs/vexpress_aemv8a_dram_defconfig
new file mode 100644
index 0000000..e9fc870
--- /dev/null
+++ b/configs/vexpress_aemv8a_dram_defconfig
@@ -0,0 +1,19 @@
+CONFIG_ARM=y
+CONFIG_TARGET_VEXPRESS64_BASE_FVP_DRAM=y
+CONFIG_SYS_MALLOC_F_LEN=0x2000
+CONFIG_DEFAULT_DEVICE_TREE="vexpress64"
+# CONFIG_CMD_CONSOLE is not set
+# CONFIG_CMD_IMLS is not set
+# CONFIG_CMD_XIMG is not set
+# CONFIG_CMD_EDITENV is not set
+# CONFIG_CMD_ENV_EXISTS is not set
+# CONFIG_CMD_LOADS is not set
+# CONFIG_CMD_FLASH is not set
+# CONFIG_CMD_FPGA is not set
+# CONFIG_CMD_ITEST is not set
+# CONFIG_CMD_SETEXPR is not set
+# CONFIG_CMD_NFS is not set
+# CONFIG_CMD_MISC is not set
+CONFIG_DM=y
+CONFIG_DM_SERIAL=y
+CONFIG_SYS_PROMPT="VExpress64# "
diff --git a/include/configs/vexpress_aemv8a.h b/include/configs/vexpress_aemv8a.h
index c54baf8..c1e2e11 100644
--- a/include/configs/vexpress_aemv8a.h
+++ b/include/configs/vexpress_aemv8a.h
@@ -30,7 +30,8 @@
 #define CONFIG_BOOTP_VCI_STRING		"U-boot.armv8.vexpress_aemv8a"
 
 /* Link Definitions */
-#ifdef CONFIG_TARGET_VEXPRESS64_BASE_FVP
+#if defined(CONFIG_TARGET_VEXPRESS64_BASE_FVP) || \
+	defined(CONFIG_TARGET_VEXPRESS64_BASE_FVP_DRAM)
 /* ATF loads u-boot here for BASE_FVP model */
 #define CONFIG_SYS_TEXT_BASE		0x88000000
 #define CONFIG_SYS_INIT_SP_ADDR         (CONFIG_SYS_SDRAM_BASE + 0x03f00000)
@@ -103,7 +104,8 @@
 #define GICR_BASE			(0x2f100000)
 #else
 
-#ifdef CONFIG_TARGET_VEXPRESS64_BASE_FVP
+#if defined(CONFIG_TARGET_VEXPRESS64_BASE_FVP) || \
+	defined(CONFIG_TARGET_VEXPRESS64_BASE_FVP_DRAM)
 #define GICD_BASE			(0x2f000000)
 #define GICC_BASE			(0x2c000000)
 #elif CONFIG_TARGET_VEXPRESS64_JUNO
@@ -233,6 +235,25 @@
 
 #define CONFIG_BOOTDELAY		1
 
+#elif CONFIG_TARGET_VEXPRESS64_BASE_FVP_DRAM
+#define CONFIG_EXTRA_ENV_SETTINGS	\
+				"kernel_addr=0x80080000\0"	\
+				"initrd_addr=0x84000000\0"	\
+				"fdt_addr=0x83000000\0"		\
+				"fdt_high=0xffffffffffffffff\0"	\
+				"initrd_high=0xffffffffffffffff\0"
+
+#define CONFIG_BOOTARGS		"console=ttyAMA0 earlyprintk=pl011,"\
+				"0x1c090000 debug user_debug=31 "\
+				"androidboot.hardware=fvpbase "\
+				"root=/dev/vda2 rw "\
+				"rootwait "\
+				"loglevel=9"
+
+#define CONFIG_BOOTCOMMAND	"booti $kernel_addr $initrd_addr $fdt_addr"
+
+#define CONFIG_BOOTDELAY		1
+
 #else
 #error "Unknown board variant"
 #endif
-- 
2.1.0