ARM64: zynqmp: Add SPL support support
Support RAM and MMC boot mode in SPL also with SPL_FIT images.
In MMC boot mode two boot options are available:
1) Boot flow with ATF(EL3) and full U-Boot(EL2):
aarch64-linux-gnu-objcopy -O binary bl31.elf bl31.bin
mkimage -A arm64 -O linux -T kernel -C none -a 0xfffe5000 -e 0xfffe5000
-d bl31.bin atf.ub
cp spl/boot.bin <sdcard fat partition>
cp atf.ub <sdcard fat partition>
cp u-boot.bin <sdcard fat partition>
2) Boot flow with full U-Boot(EL3):
cp spl/boot.bin <sdcard>
cp u-boot*.img <sdcard>
3) emmc boot mode
dd if=/dev/zero of=sd.img bs=1024 count=1024
parted sd.img mktable msdos
parted sd.img mkpart p fat32 0% 100%
kpartx -a sd.img
mkfs.vfat /dev/mapper/loop0p1
mount /dev/mapper/loop0p1 /mnt/
cp spl/boot.bin /mnt
cp u-boot.img /mnt
cp u-boot.bin /mnt
cp atf.ub /mnt
umount /dev/mapper/loop0p1
kpartx -d sd.img
cp sd.img /tftpboot/
and program it via u-boot
tftpb 10000 sd.img
mmcinfo
mmc write 10000 0 $filesize
mmc rescan
mmc part
ls mmc 0
psu_init() function contains low level SoC setup generated for every HW
design by Xilinx design tools. xil_io.h is only supporting file to fix
all dependencies from tools. The same solution was used on Xilinx Zynq.
The patch also change CONFIG_SYS_INIT_SP_ADDR to the end of OCM which
stays at the same location all the time.
Bootrom expects starting address to be at 0xfffc0000 that's why this
address is SPL_TEXT_BASE.
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 6b65d8e..729b181 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -594,6 +594,7 @@
select DM
select OF_CONTROL
select DM_SERIAL
+ select SUPPORT_SPL
config TEGRA
bool "NVIDIA Tegra"
diff --git a/arch/arm/cpu/armv8/zynqmp/Makefile b/arch/arm/cpu/armv8/zynqmp/Makefile
index d0ed222..be8673a 100644
--- a/arch/arm/cpu/armv8/zynqmp/Makefile
+++ b/arch/arm/cpu/armv8/zynqmp/Makefile
@@ -9,3 +9,4 @@
obj-y += cpu.o
obj-$(CONFIG_MP) += mp.o
obj-y += slcr.o
+obj-$(CONFIG_SPL_BUILD) += spl.o
diff --git a/arch/arm/cpu/armv8/zynqmp/spl.c b/arch/arm/cpu/armv8/zynqmp/spl.c
new file mode 100644
index 0000000..e3e2a4f
--- /dev/null
+++ b/arch/arm/cpu/armv8/zynqmp/spl.c
@@ -0,0 +1,107 @@
+/*
+ * Copyright 2015 - 2016 Xilinx, Inc.
+ *
+ * Michal Simek <michal.simek@xilinx.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <debug_uart.h>
+#include <spl.h>
+
+#include <asm/io.h>
+#include <asm/spl.h>
+#include <asm/arch/hardware.h>
+#include <asm/arch/sys_proto.h>
+
+void board_init_f(ulong dummy)
+{
+ psu_init();
+ board_early_init_r();
+
+#ifdef CONFIG_DEBUG_UART
+ /* Uart debug for sure */
+ debug_uart_init();
+ puts("Debug uart enabled\n"); /* or printch() */
+#endif
+ /* Delay is required for clocks to be propagated */
+ udelay(1000000);
+
+ /* Clear the BSS */
+ memset(__bss_start, 0, __bss_end - __bss_start);
+
+ /* No need to call timer init - it is empty for ZynqMP */
+ board_init_r(NULL, 0);
+}
+
+#ifdef CONFIG_SPL_BOARD_INIT
+void spl_board_init(void)
+{
+ preloader_console_init();
+ board_init();
+}
+#endif
+
+u32 spl_boot_device(void)
+{
+ u32 reg = 0;
+ u8 bootmode;
+
+ reg = readl(&crlapb_base->boot_mode);
+ bootmode = reg & BOOT_MODES_MASK;
+
+ switch (bootmode) {
+ case JTAG_MODE:
+ return BOOT_DEVICE_RAM;
+#ifdef CONFIG_SPL_MMC_SUPPORT
+ case EMMC_MODE:
+ case SD_MODE:
+ case SD_MODE1:
+ return BOOT_DEVICE_MMC1;
+#endif
+ default:
+ printf("Invalid Boot Mode:0x%x\n", bootmode);
+ break;
+ }
+
+ return 0;
+}
+
+u32 spl_boot_mode(void)
+{
+ switch (spl_boot_device()) {
+ case BOOT_DEVICE_RAM:
+ return 0;
+ case BOOT_DEVICE_MMC1:
+ return MMCSD_MODE_FS;
+ default:
+ puts("spl: error: unsupported device\n");
+ hang();
+ }
+}
+
+__weak void psu_init(void)
+{
+ /*
+ * This function is overridden by the one in
+ * board/xilinx/zynqmp/(platform)/psu_init_gpl.c, if it exists.
+ */
+}
+
+#ifdef CONFIG_SPL_OS_BOOT
+int spl_start_uboot(void)
+{
+ return 0;
+}
+#endif
+
+#ifdef CONFIG_SPL_LOAD_FIT
+int board_fit_config_name_match(const char *name)
+{
+ /* Just empty function now - can't decide what to choose */
+ debug("%s: %s\n", __func__, name);
+
+ return 0;
+}
+#endif
diff --git a/arch/arm/include/asm/arch-zynqmp/sys_proto.h b/arch/arm/include/asm/arch-zynqmp/sys_proto.h
index 021626d..1db2bd6 100644
--- a/arch/arm/include/asm/arch-zynqmp/sys_proto.h
+++ b/arch/arm/include/asm/arch-zynqmp/sys_proto.h
@@ -17,4 +17,6 @@
unsigned int zynqmp_get_silicon_version(void);
+void psu_init(void);
+
#endif /* _ASM_ARCH_SYS_PROTO_H */