diff options
| author | Jon Medhurst <tixy@linaro.org> | 2015-01-05 16:01:05 +0000 |
|---|---|---|
| committer | Andrey Konovalov <andrey.konovalov@linaro.org> | 2015-03-11 23:28:10 +0300 |
| commit | d59a53a5f1f37c9c021138d778df0b4bc9374641 (patch) | |
| tree | 71148f86ff4131c9ca4fbc5c4e222caaa04850a7 /drivers/of/fdt.c | |
| parent | a477ddf264e96522bb5ceedf901a52fc8c195ff4 (diff) | |
HACK: of: Limit FDT size for CRC check on arm64
There is a bug in the UEFI implementation used on Juno and 64-bit
FVPs which corrupts the reported size of the FDT. Work around this
by limiting the size for CRC checks to 2MB.
See http://lists.infradead.org/pipermail/linux-arm-kernel/2014-December/310106.html
Signed-off-by: Jon Medhurst <tixy@linaro.org>
Diffstat (limited to 'drivers/of/fdt.c')
| -rw-r--r-- | drivers/of/fdt.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/drivers/of/fdt.c b/drivers/of/fdt.c index 3a896c9aeb74..21544b9ec8cb 100644 --- a/drivers/of/fdt.c +++ b/drivers/of/fdt.c @@ -28,6 +28,12 @@ #include <asm/setup.h> /* for COMMAND_LINE_SIZE */ #include <asm/page.h> +#ifdef CONFIG_ARM64 +#define fdt_crc_size_hack(_s) min(fdt_totalsize(_s),(unsigned)0x200000) +#else +#define fdt_crc_size_hack(_s) fdt_totalsize(_s) +#endif + /* * of_fdt_limit_memory - limit the number of regions in the /memory node * @limit: maximum entries @@ -1018,7 +1024,7 @@ bool __init early_init_dt_verify(void *params) /* Setup flat device-tree pointer */ initial_boot_params = params; of_fdt_crc32 = crc32_be(~0, initial_boot_params, - fdt_totalsize(initial_boot_params)); + fdt_crc_size_hack(initial_boot_params)); return true; } @@ -1114,7 +1120,7 @@ static int __init of_fdt_raw_init(void) return 0; if (of_fdt_crc32 != crc32_be(~0, initial_boot_params, - fdt_totalsize(initial_boot_params))) { + fdt_crc_size_hack(initial_boot_params))) { pr_warn("fdt: not creating '/sys/firmware/fdt': CRC check failed\n"); return 0; } |