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arm: fdt: Relocate fdt along with other data
Rather than leave the fdt down next to the code/data, we really should relocate it along with everything else. For CONFIG_OF_EMBED this happens automatically, but for CONFIG_OF_SEPARATE it does not. Add code to copy the fdt and point to the new copy after relocation. Signed-off-by: Simon Glass <sjg@chromium.org> Tested-by: Stephen Warren <swarren@nvidia.com>
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1 changed files with 22 additions and 0 deletions
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@ -274,6 +274,8 @@ void board_init_f(ulong bootflag)
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#ifdef CONFIG_PRAM
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ulong reg;
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#endif
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void *new_fdt = NULL;
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size_t fdt_size = 0;
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bootstage_mark_name(BOOTSTAGE_ID_START_UBOOT_F, "board_init_f");
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@ -409,6 +411,22 @@ void board_init_f(ulong bootflag)
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debug("Reserving %zu Bytes for Global Data at: %08lx\n",
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sizeof (gd_t), addr_sp);
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#if defined(CONFIG_OF_SEPARATE) && defined(CONFIG_OF_CONTROL)
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/*
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* If the device tree is sitting immediate above our image then we
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* must relocate it. If it is embedded in the data section, then it
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* will be relocated with other data.
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*/
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if (gd->fdt_blob) {
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fdt_size = ALIGN(fdt_totalsize(gd->fdt_blob) + 0x1000, 32);
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addr_sp -= fdt_size;
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new_fdt = (void *)addr_sp;
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debug("Reserving %zu Bytes for FDT at: %08lx\n",
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fdt_size, addr_sp);
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}
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#endif
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/* setup stackpointer for exeptions */
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gd->irq_sp = addr_sp;
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#ifdef CONFIG_USE_IRQ
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@ -442,6 +460,10 @@ void board_init_f(ulong bootflag)
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gd->start_addr_sp = addr_sp;
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gd->reloc_off = addr - _TEXT_BASE;
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debug("relocation Offset is: %08lx\n", gd->reloc_off);
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if (new_fdt) {
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memcpy(new_fdt, gd->fdt_blob, fdt_size);
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gd->fdt_blob = new_fdt;
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}
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memcpy(id, (void *)gd, sizeof(gd_t));
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relocate_code(addr_sp, id, addr);
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