ping
Andy Yan <andy....@rock-chips.com> 于2018年8月7日周二 下午7:43写道：
> Memory region for fdt should be reserved, or they
> may be allocated by other module via lmb_alloc.
> Then the fdt data will be destroy.
>
> We found a case on a board with 64MB DRAM like bellow:
>
> No ethernet found.
> Hit any key to stop autoboot: 0
> ANDROID: reboot reason: "recovery"
> FDT load addr 0x10f00000 size 41 KiB
> Booting kernel at 0x2008000 with fdt at 2c8ac00...
>
> lmb_add base:0x58000 size:0x3fa8000
> lmb_add base:0x0 size:0x0
> lmb_reserve base:0x34ca2a0 size:0xb35d60
> Booting Android Image at 0x02008000 ...
> Kernel load addr 0x02008800 size 3808 KiB
> RAM disk load addr 0x11000000 size 9000 KiB
> * fdt: cmdline image address = 0x02c8ac00
> Checking for 'FDT'/'FDT Image' at 02c8ac00
> * fdt: raw FDT blob
> Flattened Device Tree blob at 02c8ac00
> Booting using the fdt blob at 0x2c8ac00
> of_flat_tree at 0x02c8ac00 size 0x00009d6d
> XIP Kernel Image ... OK
> do_bootm_states reserve: 0x2008800 -- 0x3b7c30
> lmb_reserve base:0x2008800 size:0x3b7c30
> no initrd_high
> env_get_bootm_size size:66748416(0x3fa8000) tmp:360448(0x58000)
> start:360448(0x58000)
> initrd_high = 0x03fa8000, copy_to_ram = 1
> Loading Ramdisk to 02c00000, end 034c9d09 ... OK
> ERROR: image is not a fdt - must RESET the board to recover.
> FDT creation failed! hanging...### ERROR ### Please RESET the board ###
>
> Signed-off-by: Andy Yan <andy....@rock-chips.com>
> ---
>
> common/image-fdt.c | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/common/image-fdt.c b/common/image-fdt.c
> index 9b41f16248..56f6d7e26b 100644
> --- a/common/image-fdt.c
> +++ b/common/image-fdt.c
> @@ -422,6 +422,7 @@ int boot_get_fdt(int flag, int argc, char * const
> argv[], uint8_t arch,
>
> *of_flat_tree = fdt_blob;
> *of_size = fdt_totalsize(fdt_blob);
> + lmb_reserve(&images->lmb, (ulong)*of_flat_tree, *of_size);
> debug(" of_flat_tree at 0x%08lx size 0x%08lx\n",
> (ulong)*of_flat_tree, *of_size);
>
> --
> 2.17.1
>
>
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