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rockchip: board: add kernel dtb support 

Load dtb from mmc/nand, rebuild live dt and scan dev.

Change-Id: If079b23702d0df333b62a14fcf3f6c2c37d3d670
Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
This commit is contained in:
Kever Yang 2018-02-07 11:10:27 +08:00
parent d2e8ba4eb0
commit f8aaa2c25f
2 changed files with 68 additions and 0 deletions
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9
arch/arm/mach-rockchip/Kconfig
View File

@ -361,6 +361,15 @@ config ROCKCHIP_VENDOR_PARTITION
This enable support to read/write vendor configuration data from/to
this partition.
config USING_KERNEL_DTB
bool "Using dtb from Kernel/resource for U-Boot"
depends on RKIMG_BOOTLOADER && OF_LIVE
default y
help
This enable support to read dtb from resource and use it for U-Boot,
the uart and emmc will still using U-Boot dtb, but other devices like
regulator/pmic, display, usb will use dts node from kernel.
config ROCKCHIP_CRC
bool "Rockchip CRC verify images"
help

59
arch/arm/mach-rockchip/board.c
View File

@ -22,6 +22,9 @@
#ifdef CONFIG_DRM_ROCKCHIP
#include <video_rockchip.h>
#endif
#include <mmc.h>
#include <of_live.h>
#include <dm/root.h>
DECLARE_GLOBAL_DATA_PTR;
@ -97,10 +100,66 @@ int board_late_init(void)
return rk_board_late_init();
}
#ifdef CONFIG_USING_KERNEL_DTB
#include <asm/arch/resource_img.h>
#define DTB_FILE "rk-kernel.dtb"
int init_kernel_dtb(void)
{
int ret = 0;
struct mmc *mmc;
struct udevice *dev;
ulong fdt_addr = 0;
ret = mmc_initialize(gd->bd);
if (ret)
goto scan_nand;
mmc = find_mmc_device(0);
if (!mmc) {
printf("no mmc device at slot 0\n");
goto scan_nand;
}
ret = mmc_init(mmc);
if (!ret)
goto init_dtb;
printf("%s mmc init fail %d\n", __func__, ret);
scan_nand:
ret = uclass_get_device(UCLASS_RKNAND, 0, &dev);
if (ret) {
printf("%s: Cannot find rknand device\n", __func__);
return -1;
}
init_dtb:
fdt_addr = env_get_ulong("fdt_addr_r", 16, 0);
if (!fdt_addr) {
printf("No Found FDT Load Address.\n");
return -1;
}
ret = rockchip_read_resource_file((void *)fdt_addr, DTB_FILE, 0, 0);
if (ret < 0) {
printf("%s dtb in resource read fail\n", __func__);
return 0;
}
of_live_build((void *)fdt_addr, (struct device_node **)&gd->of_root);
dm_scan_fdt((void *)fdt_addr, false);
gd->fdt_blob = (void *)fdt_addr;
return 0;
}
#endif
int board_init(void)
{
int ret;
#ifdef CONFIG_USING_KERNEL_DTB
init_kernel_dtb();
#endif
#ifdef CONFIG_DM_REGULATOR
ret = regulators_enable_boot_on(false);
if (ret)