vexpress64: Add BASER_FVP vexpress board variant

The BASER_FVP board variant is implemented on top of the BASE_FVP board
config (which, in turn, is based on the Juno Versatile Express board
config). They all share a similar memory map - for BASER_FVP the map is
inverted from the BASE_FVP
(https://developer.arm.com/documentation/100964/1114/Base-Platform/Base---memory/BaseR-Platform-memory-map)

 * Create new TARGET_VEXPRESS64_BASER_FVP target, which uses the same
   board config as BASE_FVP and JUNO
 * Adapt vexpress_aemv8a.h header file to support BASER_FVP (and rename
   to vexpress_aemv8.h)
 * Enable config to switch to EL1 for the BASER_FVP
 * Create vexpress_aemv8r defconfig
 * Provide an MPU memory map for the BASER_FVP

For now, only single core boot is supported.

Signed-off-by: Peter Hoyes <Peter.Hoyes@arm.com>
[trini: Add MAINTAINERS, move BOOTCOMMAND to defconfig]
Signed-off-by: Tom Rini <trini@konsulko.com>

arch/arm/Kconfig

@@ -1185,6 +1185,13 @@ config TARGET_VEXPRESS64_BASE_FVP
 	select PL01X_SERIAL
 	select SEMIHOSTING
 
+config TARGET_VEXPRESS64_BASER_FVP
+	bool "Support Versatile Express ARMv8r64 FVP BASE model"
+	select ARM64
+	select DM
+	select DM_SERIAL
+	select PL01X_SERIAL
+
 config TARGET_VEXPRESS64_JUNO
 	bool "Support Versatile Express Juno Development Platform"
 	select ARM64

board/armltd/vexpress64/Kconfig

@@ -1,4 +1,5 @@
-if TARGET_VEXPRESS64_BASE_FVP || TARGET_VEXPRESS64_JUNO
+if TARGET_VEXPRESS64_BASE_FVP || TARGET_VEXPRESS64_JUNO || \
+	TARGET_VEXPRESS64_BASER_FVP
 
 config SYS_BOARD
 	default "vexpress64"
@@ -7,7 +8,7 @@ config SYS_VENDOR
 	default "armltd"
 
 config SYS_CONFIG_NAME
-	default "vexpress_aemv8a"
+	default "vexpress_aemv8"
 
 config JUNO_DTB_PART
 	string "NOR flash partition holding DTB"

board/armltd/vexpress64/MAINTAINERS

@@ -14,3 +14,8 @@ JUNO DEVELOPMENT PLATFORM BOARD
 M:	Linus Walleij <linus.walleij@linaro.org>
 S:	Maintained
 F:	configs/vexpress_aemv8a_juno_defconfig
+
+VEXPRESS64 BASER_FVP
+M:	Peter Hoyes <Peter.Hoyes@arm.com>
+S:	Maintained
+F:	configs/vexpress_aemv8r_defconfig

board/armltd/vexpress64/vexpress64.c

@@ -18,6 +18,7 @@
 #include <dm/platform_data/serial_pl01x.h>
 #include "pcie.h"
 #include <asm/armv8/mmu.h>
+#include <asm/armv8/mpu.h>
 
 DECLARE_GLOBAL_DATA_PTR;
 
@@ -54,6 +55,27 @@ static struct mm_region vexpress64_mem_map[] = {
 
 struct mm_region *mem_map = vexpress64_mem_map;
 
+static struct mpu_region vexpress64_aemv8r_mem_map[] = {
+	{
+		.start = 0x0UL,
+		.end = 0x7fffffffUL,
+		.attrs = PRLAR_ATTRIDX(MT_NORMAL)
+	}, {
+		.start = 0x80000000UL,
+		.end = 0xffffffffUL,
+		.attrs = PRLAR_ATTRIDX(MT_DEVICE_NGNRNE)
+	}, {
+		.start = 0x100000000UL,
+		.end = 0xffffffffffUL,
+		.attrs = PRLAR_ATTRIDX(MT_NORMAL)
+	}, {
+		/* List terminator */
+		0,
+	}
+};
+
+struct mpu_region *mpu_mem_map = vexpress64_aemv8r_mem_map;
+
 /* This function gets replaced by platforms supporting PCIe.
  * The replacement function, eg. on Juno, initialises the PCIe bus.
  */

configs/vexpress_aemv8r_defconfig

@@ -0,0 +1,19 @@
+CONFIG_ARM=y
+CONFIG_TARGET_VEXPRESS64_BASER_FVP=y
+CONFIG_SYS_TEXT_BASE=0x00001000
+CONFIG_SYS_MALLOC_F_LEN=0x2000
+CONFIG_NR_DRAM_BANKS=2
+CONFIG_SYS_MEMTEST_START=0x80000000
+CONFIG_SYS_MEMTEST_END=0xff000000
+CONFIG_ENV_SIZE=0x40000
+CONFIG_ENV_SECT_SIZE=0x40000
+CONFIG_IDENT_STRING=" vexpress_aemv8r64"
+CONFIG_DISTRO_DEFAULTS=y
+CONFIG_BOOTDELAY=3
+CONFIG_USE_BOOTARGS=y
+CONFIG_BOOTARGS="console=ttyAMA0 earlycon=pl011,0x9c090000 rootfstype=ext4 root=/dev/vda1 rw rootwait"
+CONFIG_USE_BOOTCOMMAND=y
+CONFIG_BOOTCOMMAND="fdt addr ${fdt_addr}; fdt resize; booti $kernel_addr - $fdt_addr"
+# CONFIG_DISPLAY_CPUINFO is not set
+CONFIG_SYS_PROMPT="VExpress64# "
+CONFIG_OF_LIBFDT=y

doc/README.semihosting

@@ -25,7 +25,7 @@ or turning on CONFIG_BASE_FVP for the more full featured model.
 Rather than create a new armv8 board similar to armltd/vexpress64, add
 semihosting calls to the existing one, enabled with CONFIG_SEMIHOSTING
 and CONFIG_BASE_FVP both set. Also reuse the existing board config file
-vexpress_aemv8a.h but differentiate the two models by the presence or
+vexpress_aemv8.h but differentiate the two models by the presence or
 absence of CONFIG_BASE_FVP. This change is tested and works on both the
 Foundation and Base fastmodel simulators.
 

include/configs/vexpress_aemv8.h

@@ -10,30 +10,36 @@
 #define CONFIG_REMAKE_ELF
 
 /* Link Definitions */
-#ifdef CONFIG_TARGET_VEXPRESS64_BASE_FVP
+#ifdef CONFIG_TARGET_VEXPRESS64_JUNO
+#define CONFIG_SYS_INIT_SP_ADDR         (CONFIG_SYS_SDRAM_BASE + 0x7fff0)
+#else
 /* ATF loads u-boot here for BASE_FVP model */
 #define CONFIG_SYS_INIT_SP_ADDR         (CONFIG_SYS_SDRAM_BASE + 0x03f00000)
-#elif CONFIG_TARGET_VEXPRESS64_JUNO
-#define CONFIG_SYS_INIT_SP_ADDR         (CONFIG_SYS_SDRAM_BASE + 0x7fff0)
 #endif
 
 #define CONFIG_SYS_BOOTM_LEN (64 << 20)      /* Increase max gunzip size */
 
 /* CS register bases for the original memory map. */
-#define V2M_PA_CS0			0x00000000
+#ifdef CONFIG_TARGET_VEXPRESS64_BASER_FVP
-#define V2M_PA_CS1			0x14000000
+#define V2M_BASE			0x00000000
-#define V2M_PA_CS2			0x18000000
+#define V2M_PA_BASE			0x80000000
-#define V2M_PA_CS3			0x1c000000
+#else
-#define V2M_PA_CS4			0x0c000000
+#define V2M_BASE			0x80000000
-#define V2M_PA_CS5			0x10000000
+#define V2M_PA_BASE			0x00000000
+#endif
+
+#define V2M_PA_CS0			(V2M_PA_BASE + 0x00000000)
+#define V2M_PA_CS1			(V2M_PA_BASE + 0x14000000)
+#define V2M_PA_CS2			(V2M_PA_BASE + 0x18000000)
+#define V2M_PA_CS3			(V2M_PA_BASE + 0x1c000000)
+#define V2M_PA_CS4			(V2M_PA_BASE + 0x0c000000)
+#define V2M_PA_CS5			(V2M_PA_BASE + 0x10000000)
 
 #define V2M_PERIPH_OFFSET(x)		(x << 16)
 #define V2M_SYSREGS			(V2M_PA_CS3 + V2M_PERIPH_OFFSET(1))
 #define V2M_SYSCTL			(V2M_PA_CS3 + V2M_PERIPH_OFFSET(2))
 #define V2M_SERIAL_BUS_PCI		(V2M_PA_CS3 + V2M_PERIPH_OFFSET(3))
 
-#define V2M_BASE			0x80000000
-
 /* Common peripherals relative to CS7. */
 #define V2M_AACI			(V2M_PA_CS3 + V2M_PERIPH_OFFSET(4))
 #define V2M_MMCI			(V2M_PA_CS3 + V2M_PERIPH_OFFSET(5))
@@ -68,27 +74,27 @@
 #define V2M_SYS_CFGSTAT			(V2M_SYSREGS + 0x0a8)
 
 /* Generic Timer Definitions */
-#define COUNTER_FREQUENCY		24000000	/* 24MHz */
+#define COUNTER_FREQUENCY		100000000	/* 100MHz */
 
 /* Generic Interrupt Controller Definitions */
 #ifdef CONFIG_GICV3
-#define GICD_BASE			(0x2f000000)
+#define GICD_BASE			(V2M_PA_BASE + 0x2f000000)
-#define GICR_BASE			(0x2f100000)
+#define GICR_BASE			(V2M_PA_BASE + 0x2f100000)
 #else
 
-#ifdef CONFIG_TARGET_VEXPRESS64_BASE_FVP
+#ifdef CONFIG_TARGET_VEXPRESS64_JUNO
-#define GICD_BASE			(0x2f000000)
-#define GICC_BASE			(0x2c000000)
-#elif CONFIG_TARGET_VEXPRESS64_JUNO
 #define GICD_BASE			(0x2C010000)
 #define GICC_BASE			(0x2C02f000)
+#else
+#define GICD_BASE			(V2M_PA_BASE + 0x2f000000)
+#define GICC_BASE			(V2M_PA_BASE + 0x2c000000)
 #endif
 #endif /* !CONFIG_GICV3 */
 
 #ifndef CONFIG_TARGET_VEXPRESS64_JUNO
 /* The Vexpress64 simulators use SMSC91C111 */
 #define CONFIG_SMC91111			1
-#define CONFIG_SMC91111_BASE		(0x01A000000)
+#define CONFIG_SMC91111_BASE		(V2M_PA_BASE + 0x01A000000)
 #endif
 
 /* PL011 Serial Configuration */
@@ -113,7 +119,7 @@
 #ifdef CONFIG_TARGET_VEXPRESS64_JUNO
 #define PHYS_SDRAM_2			(0x880000000)
 #define PHYS_SDRAM_2_SIZE		0x180000000
-#elif CONFIG_TARGET_VEXPRESS64_BASE_FVP && CONFIG_NR_DRAM_BANKS == 2
+#elif CONFIG_NR_DRAM_BANKS == 2
 #define PHYS_SDRAM_2			(0x880000000)
 #define PHYS_SDRAM_2_SIZE		0x80000000
 #endif
@@ -200,6 +206,12 @@
 				"  booti $kernel_addr - $fdt_addr; " \
 				"fi"
 #endif
+
+#elif CONFIG_TARGET_VEXPRESS64_BASER_FVP
+#define CONFIG_EXTRA_ENV_SETTINGS	\
+				"kernel_addr=0x00800000\0"	\
+				"fdt_addr=0x03000000\0"		\
+				"boot_addr=0x0007f800\0"
 #endif
 
 /* Monitor Command Prompt */
@@ -213,7 +225,7 @@
 /* Store environment at top of flash in the same location as blank.img */
 /* in the Juno firmware. */
 #else
-#define CONFIG_SYS_FLASH_BASE		0x0C000000
+#define CONFIG_SYS_FLASH_BASE		(V2M_PA_BASE + 0x0C000000)
 /* 256 x 256KiB sectors */
 #define CONFIG_SYS_MAX_FLASH_SECT	256
 /* Store environment at top of flash */
@@ -230,4 +242,8 @@
 #define CONFIG_SYS_FLASH_EMPTY_INFO	/* flinfo indicates empty blocks */
 #define FLASH_MAX_SECTOR_SIZE		0x00040000
 
+#ifdef CONFIG_TARGET_VEXPRESS64_BASER_FVP
+#define CONFIG_ARMV8_SWITCH_TO_EL1
+#endif
+
 #endif /* __VEXPRESS_AEMV8A_H */