[U-Boot] [PATCH V2 42/51] imx: add rom api support
Peng Fan
peng.fan at nxp.com
Mon Jul 8 01:40:26 UTC 2019
i.MX8MN support loading images with rom api, so we implement
reuse board_return_to_bootrom to let ROM loading images.
Signed-off-by: Peng Fan <peng.fan at nxp.com>
---
arch/arm/include/asm/mach-imx/sys_proto.h | 33 ++++
arch/arm/mach-imx/Kconfig | 4 +
arch/arm/mach-imx/Makefile | 2 +
arch/arm/mach-imx/imx_romapi.c | 292 ++++++++++++++++++++++++++++++
4 files changed, 331 insertions(+)
create mode 100644 arch/arm/mach-imx/imx_romapi.c
diff --git a/arch/arm/include/asm/mach-imx/sys_proto.h b/arch/arm/include/asm/mach-imx/sys_proto.h
index 344de1716f..79cb4e6dc9 100644
--- a/arch/arm/include/asm/mach-imx/sys_proto.h
+++ b/arch/arm/include/asm/mach-imx/sys_proto.h
@@ -108,6 +108,39 @@ void gpr_init(void);
#endif /* CONFIG_MX6 */
+#ifdef CONFIG_IMX8M
+struct rom_api {
+ u16 ver;
+ u16 tag;
+ u32 reserved1;
+ u32 (*download_image)(u8 *dest, u32 offset, u32 size, u32 xor);
+ u32 (*query_boot_infor)(u32 info_type, u32 *info, u32 xor);
+};
+
+enum boot_dev_type_e {
+ BT_DEV_TYPE_SD = 1,
+ BT_DEV_TYPE_MMC = 2,
+ BT_DEV_TYPE_NAND = 3,
+ BT_DEV_TYPE_FLEXSPINOR = 4,
+
+ BT_DEV_TYPE_USB = 0xE,
+ BT_DEV_TYPE_MEM_DEV = 0xF,
+
+ BT_DEV_TYPE_INVALID = 0xFF
+};
+
+#define QUERY_ROM_VER 1
+#define QUERY_BT_DEV 2
+#define QUERY_PAGE_SZ 3
+#define QUERY_IVT_OFF 4
+#define QUERY_BT_STAGE 5
+#define QUERY_IMG_OFF 6
+
+#define ROM_API_OKAY 0xF0
+
+extern struct rom_api *g_rom_api;
+#endif
+
u32 get_nr_cpus(void);
u32 get_cpu_rev(void);
u32 get_cpu_speed_grade_hz(void);
diff --git a/arch/arm/mach-imx/Kconfig b/arch/arm/mach-imx/Kconfig
index b6fd1595f0..d3942f6b3f 100644
--- a/arch/arm/mach-imx/Kconfig
+++ b/arch/arm/mach-imx/Kconfig
@@ -90,3 +90,7 @@ config DDRMC_VF610_CALIBRATION
NXP does NOT recommend to perform this calibration at each boot. One
shall perform it on a new PCB and then use those values to program
the ddrmc_cr_setting on relevant board file.
+
+config IMX_ROMAPI_LOADADDR
+ hex "Default load address to load image through ROM API"
+ depends on IMX8MN
diff --git a/arch/arm/mach-imx/Makefile b/arch/arm/mach-imx/Makefile
index 898478fc4a..e69315cb50 100644
--- a/arch/arm/mach-imx/Makefile
+++ b/arch/arm/mach-imx/Makefile
@@ -207,3 +207,5 @@ obj-$(CONFIG_MX7) += mx7/
obj-$(CONFIG_ARCH_MX7ULP) += mx7ulp/
obj-$(CONFIG_IMX8M) += imx8m/
obj-$(CONFIG_ARCH_IMX8) += imx8/
+
+obj-$(CONFIG_SPL_BOOTROM_SUPPORT) += imx_romapi.o
diff --git a/arch/arm/mach-imx/imx_romapi.c b/arch/arm/mach-imx/imx_romapi.c
new file mode 100644
index 0000000000..7f6cdd9a5d
--- /dev/null
+++ b/arch/arm/mach-imx/imx_romapi.c
@@ -0,0 +1,292 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright 2019 NXP
+ */
+
+#include <common.h>
+#include <errno.h>
+#include <image.h>
+#include <linux/libfdt.h>
+#include <spl.h>
+
+#include <asm/arch/sys_proto.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+static int is_boot_from_stream_device(u32 boot)
+{
+ u32 interface;
+
+ interface = boot >> 16;
+ if (interface >= BT_DEV_TYPE_USB)
+ return 1;
+
+ if (interface == BT_DEV_TYPE_MMC && (boot & 1))
+ return 1;
+
+ return 0;
+}
+
+static ulong spl_romapi_read_seekable(struct spl_load_info *load,
+ ulong sector, ulong count,
+ void *buf)
+{
+ u32 pagesize = *(u32 *)load->priv;
+ volatile gd_t *pgd = gd;
+ ulong byte = count * pagesize;
+ int ret;
+ u32 offset;
+
+ offset = sector * pagesize;
+
+ debug("ROM API load from 0x%x, size 0x%x\n", offset, (u32)byte);
+
+ ret = g_rom_api->download_image(buf, offset, byte,
+ ((uintptr_t)buf) ^ offset ^ byte);
+ gd = pgd;
+
+ if (ret == ROM_API_OKAY)
+ return count;
+
+ printf("ROM API Failure when load 0x%x\n", offset);
+
+ return 0;
+}
+
+static int spl_romapi_load_image_seekable(struct spl_image_info *spl_image,
+ struct spl_boot_device *bootdev,
+ u32 rom_bt_dev)
+{
+ volatile gd_t *pgd = gd;
+ int ret;
+ u32 offset;
+ u32 pagesize, size;
+ struct image_header *header;
+ u32 image_offset;
+
+ ret = g_rom_api->query_boot_infor(QUERY_IVT_OFF, &offset,
+ ((uintptr_t)&offset) ^ QUERY_IVT_OFF);
+ ret |= g_rom_api->query_boot_infor(QUERY_PAGE_SZ, &pagesize,
+ ((uintptr_t)&pagesize) ^ QUERY_PAGE_SZ);
+ ret |= g_rom_api->query_boot_infor(QUERY_IMG_OFF, &image_offset,
+ ((uintptr_t)&image_offset) ^ QUERY_IMG_OFF);
+
+ gd = pgd;
+
+ if (ret != ROM_API_OKAY) {
+ puts("ROMAPI: Failure query boot infor pagesize/offset\n");
+ return -1;
+ }
+
+ header = (struct image_header *)(CONFIG_IMX_ROMAPI_LOADADDR);
+
+ printf("image offset 0x%x, pagesize 0x%x, ivt offset 0x%x\n",
+ image_offset, pagesize, offset);
+
+ if (((rom_bt_dev >> 16) & 0xff) == BT_DEV_TYPE_FLEXSPINOR)
+ offset = CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR * 512;
+ else
+ offset = image_offset +
+ CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR * 512 - 0x8000;
+
+ size = ALIGN(sizeof(struct image_header), pagesize);
+ ret = g_rom_api->download_image((u8 *)header, offset, size,
+ ((uintptr_t)header) ^ offset ^ size);
+ gd = pgd;
+
+ if (ret != ROM_API_OKAY) {
+ printf("ROMAPI: download failure offset 0x%x size 0x%x\n",
+ offset, size);
+ return -1;
+ }
+
+ if (IS_ENABLED(CONFIG_SPL_LOAD_FIT) &&
+ image_get_magic(header) == FDT_MAGIC) {
+ struct spl_load_info load;
+
+ memset(&load, 0, sizeof(load));
+ load.bl_len = pagesize;
+ load.read = spl_romapi_read_seekable;
+ load.priv = &pagesize;
+ return spl_load_simple_fit(spl_image, &load,
+ offset / pagesize, header);
+ } else {
+ /* TODO */
+ puts("Can't support legacy image\n");
+ return -1;
+ }
+
+ return 0;
+}
+
+static ulong spl_ram_load_read(struct spl_load_info *load, ulong sector,
+ ulong count, void *buf)
+{
+ memcpy(buf, (void *)(sector), count);
+
+ if (load->priv) {
+ ulong *p = (ulong *)load->priv;
+ ulong total = sector + count;
+
+ if (total > *p)
+ *p = total;
+ }
+
+ return count;
+}
+
+static ulong get_fit_image_size(void *fit)
+{
+ struct spl_image_info spl_image;
+ struct spl_load_info spl_load_info;
+ ulong last = (ulong)fit;
+
+ memset(&spl_load_info, 0, sizeof(spl_load_info));
+ spl_load_info.bl_len = 1;
+ spl_load_info.read = spl_ram_load_read;
+ spl_load_info.priv = &last;
+
+ spl_load_simple_fit(&spl_image, &spl_load_info,
+ (uintptr_t)fit, fit);
+
+ return last - (ulong)fit;
+}
+
+u8 *search_fit_header(u8 *p, int size)
+{
+ int i;
+
+ for (i = 0; i < size; i += 4)
+ if (genimg_get_format(p + i) == IMAGE_FORMAT_FIT)
+ return p + i;
+
+ return NULL;
+}
+
+static int spl_romapi_load_image_stream(struct spl_image_info *spl_image,
+ struct spl_boot_device *bootdev)
+{
+ struct spl_load_info load;
+ volatile gd_t *pgd = gd;
+ u32 pagesize, pg;
+ int ret;
+ int i = 0;
+ u8 *p = (u8 *)CONFIG_IMX_ROMAPI_LOADADDR;
+ u8 *pfit = NULL;
+ int imagesize;
+ int total;
+
+ ret = g_rom_api->query_boot_infor(QUERY_PAGE_SZ, &pagesize,
+ ((uintptr_t)&pagesize) ^ QUERY_PAGE_SZ);
+ gd = pgd;
+
+ if (ret != ROM_API_OKAY)
+ puts("failure at query_boot_info\n");
+
+ pg = pagesize;
+ if (pg < 1024)
+ pg = 1024;
+
+ for (i = 0; i < 640; i++) {
+ ret = g_rom_api->download_image(p, 0, pg,
+ ((uintptr_t)p) ^ pg);
+ gd = pgd;
+
+ if (ret != ROM_API_OKAY) {
+ puts("Steam(USB) download failure\n");
+ return -1;
+ }
+
+ pfit = search_fit_header(p, pg);
+ p += pg;
+
+ if (pfit)
+ break;
+ }
+
+ if (!pfit) {
+ puts("Can't found uboot FIT image in 640K range \n");
+ return -1;
+ }
+
+ if (p - pfit < sizeof(struct fdt_header)) {
+ ret = g_rom_api->download_image(p, 0, pg, ((uintptr_t)p) ^ pg);
+ gd = pgd;
+
+ if (ret != ROM_API_OKAY) {
+ puts("Steam(USB) download failure\n");
+ return -1;
+ }
+
+ p += pg;
+ }
+
+ imagesize = fit_get_size(pfit);
+ printf("Find FIT header 0x&%p, size %d\n", pfit, imagesize);
+
+ if (p - pfit < imagesize) {
+ imagesize -= p - pfit;
+ /*need pagesize hear after ROM fix USB problme*/
+ imagesize += pg - 1;
+ imagesize /= pg;
+ imagesize *= pg;
+
+ printf("Need continue download %d\n", imagesize);
+
+ ret = g_rom_api->download_image(p, 0, imagesize,
+ ((uintptr_t)p) ^ imagesize);
+ gd = pgd;
+
+ p += imagesize;
+
+ if (ret != ROM_API_OKAY) {
+ printf("Failure download %d\n", imagesize);
+ return -1;
+ }
+ }
+
+ total = get_fit_image_size(pfit);
+ total += 3;
+ total &= ~0x3;
+
+ imagesize = total - (p - pfit);
+
+ imagesize += pagesize - 1;
+ imagesize /= pagesize;
+ imagesize *= pagesize;
+
+ printf("Download %d, total fit %d\n", imagesize, total);
+
+ ret = g_rom_api->download_image(p, 0, imagesize,
+ ((uintptr_t)p) ^ imagesize);
+ if (ret != ROM_API_OKAY)
+ printf("ROM download failure %d\n", imagesize);
+
+ memset(&load, 0, sizeof(load));
+ load.bl_len = 1;
+ load.read = spl_ram_load_read;
+
+ return spl_load_simple_fit(spl_image, &load, (ulong)pfit, pfit);
+}
+
+int board_return_to_bootrom(struct spl_image_info *spl_image,
+ struct spl_boot_device *bootdev)
+{
+ volatile gd_t *pgd = gd;
+ int ret;
+ u32 boot;
+
+ ret = g_rom_api->query_boot_infor(QUERY_BT_DEV, &boot,
+ ((uintptr_t)&boot) ^ QUERY_BT_DEV);
+ gd = pgd;
+
+ if (ret != ROM_API_OKAY) {
+ puts("ROMAPI: failure at query_boot_info\n");
+ return -1;
+ }
+
+ if (is_boot_from_stream_device(boot))
+ return spl_romapi_load_image_stream(spl_image, bootdev);
+
+ return spl_romapi_load_image_seekable(spl_image, bootdev, boot);
+}
--
2.16.4
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