[PATCH v5 10/14] riscv: sifive: fu540: add SPL configuration
Pragnesh Patel
pragnesh.patel at sifive.com
Wed Mar 11 08:03:16 CET 2020
Add a support for SPL which will boot from L2 LIM (0x0800_0000) and
then boot U-boot FIT image including OpenSBI FW_DYNAMIC firmware
and U-Boot proper images from 1st partition of MMC boot devices.
SPL related code is leverage from FSBL
(https://github.com/sifive/freedom-u540-c000-bootloader.git)
Signed-off-by: Pragnesh Patel <pragnesh.patel at sifive.com>
---
board/sifive/fu540/Kconfig | 8 +++
board/sifive/fu540/Makefile | 4 ++
board/sifive/fu540/fu540-memory-map.h | 23 ++++++++
board/sifive/fu540/fu540.c | 24 +++++++++
board/sifive/fu540/spl.c | 78 +++++++++++++++++++++++++++
include/configs/sifive-fu540.h | 18 +++++++
6 files changed, 155 insertions(+)
create mode 100644 board/sifive/fu540/fu540-memory-map.h
create mode 100644 board/sifive/fu540/spl.c
diff --git a/board/sifive/fu540/Kconfig b/board/sifive/fu540/Kconfig
index 900197bbb2..ebe3472f9a 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 SUPPORT_SPL
imply CMD_DHCP
imply CMD_EXT2
imply CMD_EXT4
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-memory-map.h b/board/sifive/fu540/fu540-memory-map.h
new file mode 100644
index 0000000000..cba464652b
--- /dev/null
+++ b/board/sifive/fu540/fu540-memory-map.h
@@ -0,0 +1,23 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright (c) 2019 SiFive, Inc
+ */
+
+#ifndef FU540_MEMORY_MAP
+#define FU540_MEMORY_MAP
+
+#include <asm/arch/gpio.h>
+
+/****************************************************************************
+ * Platform definitions
+ *****************************************************************************/
+
+/* Memory map */
+#define GPIO_CTRL_ADDR _AC(0x10060000, UL)
+
+/* Helper functions */
+#define _REG32(p, i) (*(volatile uint32_t *)((p) + (i)))
+
+#define GPIO_REG(offset) _REG32(GPIO_CTRL_ADDR, offset)
+
+#endif /* FU540_MEMORY_MAP */
diff --git a/board/sifive/fu540/fu540.c b/board/sifive/fu540/fu540.c
index 6c642b3082..89a65eb3fb 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 +115,26 @@ int board_init(void)
return 0;
}
+
+#ifdef CONFIG_SPL
+void board_boot_order(u32 *spl_boot_list)
+{
+ u8 i;
+ u32 boot_devices[] = {
+#ifdef CONFIG_SPL_MMC_SUPPORT
+ BOOT_DEVICE_MMC1,
+#endif
+ };
+
+ for (i = 0; i < ARRAY_SIZE(boot_devices); i++)
+ spl_boot_list[i] = boot_devices[i];
+}
+#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..522bc24753
--- /dev/null
+++ b/board/sifive/fu540/spl.c
@@ -0,0 +1,78 @@
+// 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 <dm.h>
+
+#include "fu540-memory-map.h"
+
+#define DDRCTLPLL_F 55
+#define DDRCTLPLL_Q 2
+
+#define PHY_NRESET 0x1000
+
+long nsec_per_cyc = 300; /* 33.333MHz */
+void nsleep(long nsec)
+{
+ long step = nsec_per_cyc * 2;
+
+ while (nsec > 0)
+ nsec -= step;
+}
+
+void init_clk_and_ddr(void)
+{
+ int ret;
+ struct udevice *dev;
+
+ /* PRCI init */
+ ret = uclass_get_device(UCLASS_CLK, 0, &dev);
+ if (ret) {
+ debug("Clock init failed: %d\n", ret);
+ return;
+ }
+
+ ret = uclass_get_device(UCLASS_RAM, 0, &dev);
+ if (ret) {
+ printf("DRAM init failed: %d\n", ret);
+ return;
+ }
+
+ /*
+ * GEMGXL init VSC8541 PHY reset sequence;
+ * leave pull-down active for 2ms
+ */
+ nsleep(2000000);
+ /* Set GPIO 12 (PHY NRESET) to OE=1 and OVAL=1 */
+ GPIO_REG(GPIO_OUTPUT_VAL) |= PHY_NRESET;
+ GPIO_REG(GPIO_OUTPUT_EN) |= PHY_NRESET;
+ nsleep(100);
+
+ /* Reset PHY again to enter unmanaged mode */
+ GPIO_REG(GPIO_OUTPUT_VAL) &= ~PHY_NRESET;
+ nsleep(100);
+ GPIO_REG(GPIO_OUTPUT_VAL) |= PHY_NRESET;
+ nsleep(15000000);
+}
+
+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();
+
+ init_clk_and_ddr();
+
+ preloader_console_init();
+}
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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