[PATCH v9 14/18] riscv: sifive: fu540: add SPL configuration
Pragnesh Patel
pragnesh.patel at sifive.com
Wed May 13 08:26:11 CEST 2020
Add a support for SPL which will boot from L2 LIM (0x0800_0000) and
then SPL will boot U-Boot FIT image (OpenSBI FW_DYNAMIC + u-boot.bin)
from MMC boot devices.
SPL related code is leveraged from FSBL
(https://github.com/sifive/freedom-u540-c000-bootloader.git)
Signed-off-by: Pragnesh Patel <pragnesh.patel at sifive.com>
Reviewed-by: Bin Meng <bmeng.cn at gmail.com>
Tested-by: Bin Meng <bmeng.cn at gmail.com>
Reviewed-by: Jagan Teki <jagan at amarulasolutions.com>
---
arch/riscv/cpu/fu540/Makefile | 4 ++
arch/riscv/cpu/fu540/spl.c | 23 ++++++
.../dts/hifive-unleashed-a00-u-boot.dtsi | 5 ++
arch/riscv/include/asm/arch-fu540/spl.h | 14 ++++
board/sifive/fu540/Kconfig | 10 ++-
board/sifive/fu540/Makefile | 4 ++
board/sifive/fu540/fu540.c | 21 ++++++
board/sifive/fu540/spl.c | 72 +++++++++++++++++++
include/configs/sifive-fu540.h | 18 +++++
9 files changed, 170 insertions(+), 1 deletion(-)
create mode 100644 arch/riscv/cpu/fu540/spl.c
create mode 100644 arch/riscv/include/asm/arch-fu540/spl.h
create mode 100644 board/sifive/fu540/spl.c
diff --git a/arch/riscv/cpu/fu540/Makefile b/arch/riscv/cpu/fu540/Makefile
index 44700d998c..043fb961a5 100644
--- a/arch/riscv/cpu/fu540/Makefile
+++ b/arch/riscv/cpu/fu540/Makefile
@@ -3,5 +3,9 @@
# Copyright (C) 2020 SiFive, Inc
# Pragnesh Patel <pragnesh.patel at sifive.com>
+ifeq ($(CONFIG_SPL_BUILD),y)
+obj-y += spl.o
+else
obj-y += dram.o
obj-y += cpu.o
+endif
diff --git a/arch/riscv/cpu/fu540/spl.c b/arch/riscv/cpu/fu540/spl.c
new file mode 100644
index 0000000000..2e05d8a6e2
--- /dev/null
+++ b/arch/riscv/cpu/fu540/spl.c
@@ -0,0 +1,23 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2020 SiFive, Inc
+ * Pragnesh Patel <pragnesh.patel at sifive.com>
+ */
+
+#include <common.h>
+#include <dm.h>
+
+int soc_spl_init(void)
+{
+ int ret;
+ struct udevice *dev;
+
+ /* DDR init */
+ ret = uclass_get_device(UCLASS_RAM, 0, &dev);
+ if (ret) {
+ debug("DRAM init failed: %d\n", ret);
+ return ret;
+ }
+
+ return 0;
+}
diff --git a/arch/riscv/dts/hifive-unleashed-a00-u-boot.dtsi b/arch/riscv/dts/hifive-unleashed-a00-u-boot.dtsi
index 9787332bf1..303806454b 100644
--- a/arch/riscv/dts/hifive-unleashed-a00-u-boot.dtsi
+++ b/arch/riscv/dts/hifive-unleashed-a00-u-boot.dtsi
@@ -4,6 +4,7 @@
*/
#include "fu540-c000-u-boot.dtsi"
+#include "fu540-hifive-unleashed-a00-ddr.dtsi"
/ {
aliases {
@@ -26,3 +27,7 @@
u-boot,dm-spl;
};
};
+
+&gpio {
+ u-boot,dm-spl;
+};
diff --git a/arch/riscv/include/asm/arch-fu540/spl.h b/arch/riscv/include/asm/arch-fu540/spl.h
new file mode 100644
index 0000000000..0c188be747
--- /dev/null
+++ b/arch/riscv/include/asm/arch-fu540/spl.h
@@ -0,0 +1,14 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright (C) 2020 SiFive, Inc.
+ *
+ * Authors:
+ * Pragnesh Patel <pragnesh.patel at sifve.com>
+ */
+
+#ifndef _SPL_SIFIVE_H
+#define _SPL_SIFIVE_H
+
+int soc_spl_init(void);
+
+#endif /* _SPL_SIFIVE_H */
diff --git a/board/sifive/fu540/Kconfig b/board/sifive/fu540/Kconfig
index eb5ba3123d..4a77a2a37b 100644
--- a/board/sifive/fu540/Kconfig
+++ b/board/sifive/fu540/Kconfig
@@ -13,12 +13,20 @@ config SYS_CONFIG_NAME
default "sifive-fu540"
config SYS_TEXT_BASE
+ default 0x80200000 if SPL
default 0x80000000 if !RISCV_SMODE
default 0x80200000 if RISCV_SMODE
+config SPL_TEXT_BASE
+ default 0x08000000
+
+config SPL_OPENSBI_LOAD_ADDR
+ default 0x80000000
+
config BOARD_SPECIFIC_OPTIONS # dummy
def_bool y
- select GENERIC_RISCV
+ select SIFIVE_FU540
+ select SUPPORT_SPL
select RAM
select SPL_RAM if SPL
imply CMD_DHCP
diff --git a/board/sifive/fu540/Makefile b/board/sifive/fu540/Makefile
index 6e1862c475..b05e2f5807 100644
--- a/board/sifive/fu540/Makefile
+++ b/board/sifive/fu540/Makefile
@@ -3,3 +3,7 @@
# Copyright (c) 2019 Western Digital Corporation or its affiliates.
obj-y += fu540.o
+
+ifdef CONFIG_SPL_BUILD
+obj-y += spl.o
+endif
diff --git a/board/sifive/fu540/fu540.c b/board/sifive/fu540/fu540.c
index 540638c919..535ab60aed 100644
--- a/board/sifive/fu540/fu540.c
+++ b/board/sifive/fu540/fu540.c
@@ -11,6 +11,7 @@
#include <linux/delay.h>
#include <linux/io.h>
#include <misc.h>
+#include <spl.h>
/*
* This define is a value used for error/unknown serial.
@@ -114,3 +115,23 @@ int board_init(void)
return 0;
}
+
+#ifdef CONFIG_SPL
+u32 spl_boot_device(void)
+{
+#ifdef CONFIG_SPL_MMC_SUPPORT
+ return BOOT_DEVICE_MMC1;
+#else
+ puts("Unknown boot device\n");
+ hang();
+#endif
+}
+#endif
+
+#ifdef CONFIG_SPL_LOAD_FIT
+int board_fit_config_name_match(const char *name)
+{
+ /* boot using first FIT config */
+ return 0;
+}
+#endif
diff --git a/board/sifive/fu540/spl.c b/board/sifive/fu540/spl.c
new file mode 100644
index 0000000000..b3ff6850e3
--- /dev/null
+++ b/board/sifive/fu540/spl.c
@@ -0,0 +1,72 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (c) 2019 SiFive, Inc
+ *
+ * Authors:
+ * Pragnesh Patel <pragnesh.patel at sifive.com>
+ */
+
+#include <common.h>
+#include <spl.h>
+#include <misc.h>
+#include <asm/gpio.h>
+#include <asm/arch/gpio.h>
+#include <asm/arch/spl.h>
+
+#define GEM_PHY_RESET SIFIVE_GENERIC_GPIO_NR(0, 12)
+
+int init_clk_and_ddr(void)
+{
+ int ret;
+
+ ret = soc_spl_init();
+ if (ret) {
+ debug("FU540 SPL init failed: %d\n", ret);
+ return ret;
+ }
+
+ /*
+ * GEMGXL init VSC8541 PHY reset sequence;
+ * leave pull-down active for 2ms
+ */
+ udelay(2000);
+ ret = gpio_request(GEM_PHY_RESET, "gem_phy_reset");
+ if (ret) {
+ debug("gem_phy_reset gpio request failed: %d\n", ret);
+ return ret;
+ }
+
+ /* Set GPIO 12 (PHY NRESET) */
+ ret = gpio_direction_output(GEM_PHY_RESET, 1);
+ if (ret) {
+ debug("gem_phy_reset gpio direction set failed: %d\n", ret);
+ return ret;
+ }
+
+ udelay(1);
+
+ /* Reset PHY again to enter unmanaged mode */
+ gpio_set_value(GEM_PHY_RESET, 0);
+ udelay(1);
+ gpio_set_value(GEM_PHY_RESET, 1);
+ mdelay(15);
+
+ return 0;
+}
+
+void board_init_f(ulong dummy)
+{
+ int ret;
+
+ ret = spl_early_init();
+ if (ret)
+ panic("spl_early_init() failed: %d\n", ret);
+
+ arch_cpu_init_dm();
+
+ preloader_console_init();
+
+ ret = init_clk_and_ddr();
+ if (ret)
+ panic("init_clk_and_ddr() failed: %d\n", ret);
+}
diff --git a/include/configs/sifive-fu540.h b/include/configs/sifive-fu540.h
index 2756ed5a77..ef3ae9b650 100644
--- a/include/configs/sifive-fu540.h
+++ b/include/configs/sifive-fu540.h
@@ -11,6 +11,22 @@
#include <linux/sizes.h>
+#ifdef CONFIG_SPL
+
+#define CONFIG_SPL_MAX_SIZE 0x00100000
+#define CONFIG_SPL_BSS_START_ADDR 0x85000000
+#define CONFIG_SPL_BSS_MAX_SIZE 0x00100000
+#define CONFIG_SYS_SPL_MALLOC_START (CONFIG_SPL_BSS_START_ADDR + \
+ CONFIG_SPL_BSS_MAX_SIZE)
+#define CONFIG_SYS_SPL_MALLOC_SIZE 0x00100000
+
+#define CONFIG_SPL_LOAD_FIT_ADDRESS 0x84000000
+
+#define CONFIG_SPL_STACK (0x08000000 + 0x001D0000 - \
+ GENERATED_GBL_DATA_SIZE)
+
+#endif
+
#define CONFIG_SYS_SDRAM_BASE 0x80000000
#define CONFIG_SYS_INIT_SP_ADDR (CONFIG_SYS_SDRAM_BASE + SZ_2M)
@@ -24,6 +40,7 @@
/* Environment options */
+#ifndef CONFIG_SPL_BUILD
#define BOOT_TARGET_DEVICES(func) \
func(MMC, mmc, 0) \
func(DHCP, dhcp, na)
@@ -43,5 +60,6 @@
#define CONFIG_PREBOOT \
"setenv fdt_addr ${fdtcontroladdr};" \
"fdt addr ${fdtcontroladdr};"
+#endif
#endif /* __CONFIG_H */
--
2.17.1
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