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fdt: Fixup only valid memory banks
Memory banks with address 0 and size 0 are empty and should not be passed to the OS via device tree. Signed-off-by: Thierry Reding <treding@nvidia.com> Acked-by: Stephen Warren <swarren@nvidia.com>
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@ -418,7 +418,7 @@ static int fdt_pack_reg(const void *fdt, void *buf, u64 *address, u64 *size,
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int fdt_fixup_memory_banks(void *blob, u64 start[], u64 size[], int banks)
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int fdt_fixup_memory_banks(void *blob, u64 start[], u64 size[], int banks)
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{
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{
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int err, nodeoffset;
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int err, nodeoffset;
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int len;
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int len, i;
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u8 tmp[MEMORY_BANKS_MAX * 16]; /* Up to 64-bit address + 64-bit size */
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u8 tmp[MEMORY_BANKS_MAX * 16]; /* Up to 64-bit address + 64-bit size */
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if (banks > MEMORY_BANKS_MAX) {
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if (banks > MEMORY_BANKS_MAX) {
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@ -450,6 +450,12 @@ int fdt_fixup_memory_banks(void *blob, u64 start[], u64 size[], int banks)
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if (!banks)
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if (!banks)
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return 0;
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return 0;
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for (i = 0; i < banks; i++)
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if (start[i] == 0 && size[i] == 0)
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break;
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banks = i;
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len = fdt_pack_reg(blob, tmp, start, size, banks);
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len = fdt_pack_reg(blob, tmp, start, size, banks);
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err = fdt_setprop(blob, nodeoffset, "reg", tmp, len);
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err = fdt_setprop(blob, nodeoffset, "reg", tmp, len);
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