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authorAtish Patra <atish.patra@wdc.com>2019-05-06 17:49:39 -0700
committerAndes <uboot@andestech.com>2019-05-09 16:47:52 +0800
commit3cedc97479ff44cdc00485de7517a833e3dfb630 (patch)
treea460c445d08d1a89c85fd49904efeaa8e8e5a765
parentd8fc1ef2f0b4b759181fe5fa3c5c64af538cef85 (diff)
RISCV: image: Add booti support
This patch adds booti support for RISC-V Linux kernel. The existing bootm method will also continue to work as it is. It depends on the following kernel patch which adds the header to the flat Image. Gzip compressed Image (Image.gz) support is not enabled with this patch. https://patchwork.kernel.org/patch/10925543/ Tested on HiFive Unleashed and QEMU. Signed-off-by: Atish Patra <atish.patra@wdc.com> Reviewed-by: Tom Rini <trini@konsulko.com> Tested-by: Karsten Merker <merker@debian.org> Reviewed-by: Marek Vasut <marek.vasut@gmail.com>
-rw-r--r--arch/riscv/lib/Makefile1
-rw-r--r--arch/riscv/lib/image.c55
-rw-r--r--cmd/Kconfig2
-rw-r--r--cmd/booti.c8
4 files changed, 63 insertions, 3 deletions
diff --git a/arch/riscv/lib/Makefile b/arch/riscv/lib/Makefile
index 1c332db436..6ae6ebbeaf 100644
--- a/arch/riscv/lib/Makefile
+++ b/arch/riscv/lib/Makefile
@@ -7,6 +7,7 @@
# Rick Chen, Andes Technology Corporation <rick@andestech.com>
obj-$(CONFIG_CMD_BOOTM) += bootm.o
+obj-$(CONFIG_CMD_BOOTI) += bootm.o image.o
obj-$(CONFIG_CMD_GO) += boot.o
obj-y += cache.o
obj-$(CONFIG_RISCV_RDTIME) += rdtime.o
diff --git a/arch/riscv/lib/image.c b/arch/riscv/lib/image.c
new file mode 100644
index 0000000000..d063beb7df
--- /dev/null
+++ b/arch/riscv/lib/image.c
@@ -0,0 +1,55 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2019 Western Digital Corporation or its affiliates.
+ * Authors:
+ * Atish Patra <atish.patra@wdc.com>
+ * Based on arm/lib/image.c
+ */
+
+#include <common.h>
+#include <mapmem.h>
+#include <errno.h>
+#include <linux/sizes.h>
+#include <linux/stddef.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+/* ASCII version of "RISCV" defined in Linux kernel */
+#define LINUX_RISCV_IMAGE_MAGIC 0x5643534952
+
+struct linux_image_h {
+ uint32_t code0; /* Executable code */
+ uint32_t code1; /* Executable code */
+ uint64_t text_offset; /* Image load offset */
+ uint64_t image_size; /* Effective Image size */
+ uint64_t res1; /* reserved */
+ uint64_t res2; /* reserved */
+ uint64_t res3; /* reserved */
+ uint64_t magic; /* Magic number */
+ uint32_t res4; /* reserved */
+ uint32_t res5; /* reserved */
+};
+
+int booti_setup(ulong image, ulong *relocated_addr, ulong *size,
+ bool force_reloc)
+{
+ struct linux_image_h *lhdr;
+
+ lhdr = (struct linux_image_h *)map_sysmem(image, 0);
+
+ if (lhdr->magic != LINUX_RISCV_IMAGE_MAGIC) {
+ puts("Bad Linux RISCV Image magic!\n");
+ return -EINVAL;
+ }
+
+ if (lhdr->image_size == 0) {
+ puts("Image lacks image_size field, error!\n");
+ return -EINVAL;
+ }
+ *size = lhdr->image_size;
+ *relocated_addr = gd->ram_base + lhdr->text_offset;
+
+ unmap_sysmem(lhdr);
+
+ return 0;
+}
diff --git a/cmd/Kconfig b/cmd/Kconfig
index 069e0ea730..4e11e0f404 100644
--- a/cmd/Kconfig
+++ b/cmd/Kconfig
@@ -223,7 +223,7 @@ config CMD_BOOTZ
config CMD_BOOTI
bool "booti"
- depends on ARM64
+ depends on ARM64 || RISCV
default y
help
Boot an AArch64 Linux Kernel image from memory.
diff --git a/cmd/booti.c b/cmd/booti.c
index 04353b68ec..c36b0235df 100644
--- a/cmd/booti.c
+++ b/cmd/booti.c
@@ -77,7 +77,11 @@ int do_booti(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
bootm_disable_interrupts();
images.os.os = IH_OS_LINUX;
+#ifdef CONFIG_RISCV_SMODE
+ images.os.arch = IH_ARCH_RISCV;
+#elif CONFIG_ARM64
images.os.arch = IH_ARCH_ARM64;
+#endif
ret = do_bootm_states(cmdtp, flag, argc, argv,
#ifdef CONFIG_SYS_BOOT_RAMDISK_HIGH
BOOTM_STATE_RAMDISK |
@@ -92,7 +96,7 @@ int do_booti(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
#ifdef CONFIG_SYS_LONGHELP
static char booti_help_text[] =
"[addr [initrd[:size]] [fdt]]\n"
- " - boot arm64 Linux Image stored in memory\n"
+ " - boot Linux 'Image' stored at 'addr'\n"
"\tThe argument 'initrd' is optional and specifies the address\n"
"\tof an initrd in memory. The optional parameter ':size' allows\n"
"\tspecifying the size of a RAW initrd.\n"
@@ -107,5 +111,5 @@ static char booti_help_text[] =
U_BOOT_CMD(
booti, CONFIG_SYS_MAXARGS, 1, do_booti,
- "boot arm64 Linux Image image from memory", booti_help_text
+ "boot Linux kernel 'Image' format from memory", booti_help_text
);