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phase2: separate CRC from try_this_kernel
As an added benefit, we can drop one level of indentation. Signed-off-by: Werner Almesberger <werner@openmoko.org>
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@ -223,6 +223,29 @@ static void do_params(unsigned initramfs_len,
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params->hdr.size = 0;
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}
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static int do_crc(const image_header_t *hdr, const void *kernel_dram)
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{
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unsigned long crc;
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/*
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* It's good for now to know that our kernel is intact from
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* the storage before we jump into it and maybe crash silently
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* even though it costs us some time
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*/
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crc = crc32(0, kernel_dram + sizeof(image_header_t),
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__be32_to_cpu(hdr->ih_size));
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if (crc == __be32_to_cpu(hdr->ih_dcrc))
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return 1;
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puts("\nKernel CRC ERROR: read 0x");
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print32(crc);
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puts(" vs hdr CRC 0x");
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print32(__be32_to_cpu(hdr->ih_dcrc));
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puts("\n");
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return 0;
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}
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static void try_this_kernel(void)
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{
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void (*the_kernel)(int zero, int arch, uint params);
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@ -232,7 +255,6 @@ static void try_this_kernel(void)
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static int last_block_init_result = 0;
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int ret;
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void * kernel_dram = (void *)this_board->linux_mem_start + 0x8000;
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unsigned long crc;
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image_header_t *hdr;
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u32 kernel_size;
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@ -333,21 +355,8 @@ static void try_this_kernel(void)
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indicate(UI_IND_INITRAMFS_PULL_OK);
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}
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/*
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* It's good for now to know that our kernel is intact from
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* the storage before we jump into it and maybe crash silently
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* even though it costs us some time
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*/
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crc = crc32(0, kernel_dram + sizeof(image_header_t),
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__be32_to_cpu(hdr->ih_size));
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if (crc != __be32_to_cpu(hdr->ih_dcrc)) {
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puts("\nKernel CRC ERROR: read 0x");
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print32(crc);
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puts(" vs hdr CRC 0x");
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print32(__be32_to_cpu(hdr->ih_dcrc));
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puts("\n");
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if (!do_crc(hdr, kernel_dram))
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return;
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}
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the_kernel = (void (*)(int, int, uint))
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(((char *)hdr) + sizeof(image_header_t));
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