Browse Source

imx: add rom api support

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@nxp.com>
tags/2020-06-01
Peng Fan 1 year ago
committed by Troy Kisky
parent
commit
fe5c1edf75
4 changed files with 331 additions and 0 deletions
  1. +33
    -0
      arch/arm/include/asm/mach-imx/sys_proto.h
  2. +4
    -0
      arch/arm/mach-imx/Kconfig
  3. +2
    -0
      arch/arm/mach-imx/Makefile
  4. +292
    -0
      arch/arm/mach-imx/spl_imx_romapi.c

+ 33
- 0
arch/arm/include/asm/mach-imx/sys_proto.h View File

@@ -111,6 +111,39 @@ 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);


+ 4
- 0
arch/arm/mach-imx/Kconfig View File

@@ -83,3 +83,7 @@ config NXP_BOARD_REVISION
NXP boards based on i.MX6/7 contain the board revision information
stored in the fuses. Select this option if you want to be able to
retrieve the board revision information.

config SPL_IMX_ROMAPI_LOADADDR
hex "Default load address to load image through ROM API"
depends on IMX8MN

+ 2
- 0
arch/arm/mach-imx/Makefile View File

@@ -187,3 +187,5 @@ obj-$(CONFIG_MX6) += mx6/
obj-$(CONFIG_MX7) += mx7/
obj-$(CONFIG_ARCH_MX7ULP) += mx7ulp/
obj-$(CONFIG_IMX8M) += imx8m/

obj-$(CONFIG_SPL_BOOTROM_SUPPORT) += spl_imx_romapi.o

+ 292
- 0
arch/arm/mach-imx/spl_imx_romapi.c View File

@@ -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_SPL_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_SPL_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);
}

Loading…
Cancel
Save