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ppc: qemu: Delete the temporary FDT virtual-physical mapping after U-Boot is relocated

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After U-Boot is relocated to RAM already, the previous temporary FDT
virtual-physical mapping that was used in the pre-relocation phase
is no longer needed. Let's delete the mapping.

get_fdt_virt() might be used before and after relocation, update it
to return different virtual address of FDT.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Priyanka Jain <priyanka.jain@nxp.com>
This commit is contained in:
Bin Meng 2021-02-25 17:22:55 +08:00 committed by Priyanka Jain
parent 9a39f76c7a
commit c8f911cb08
1 changed files with 10 additions and 1 deletions
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11
board/freescale/qemu-ppce500/qemu-ppce500.c
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@ -31,7 +31,10 @@ DECLARE_GLOBAL_DATA_PTR;
static void *get_fdt_virt(void)
{
return (void *)CONFIG_SYS_TMPVIRT;
if (gd->flags & GD_FLG_RELOC)
return (void *)gd->fdt_blob;
else
return (void *)CONFIG_SYS_TMPVIRT;
}
static uint64_t get_fdt_phys(void)
@ -138,6 +141,12 @@ int misc_init_r(void)
*/
virtio_init();
/*
* U-Boot is relocated to RAM already, let's delete the temporary FDT
* virtual-physical mapping that was used in the pre-relocation phase.
*/
disable_tlb(find_tlb_idx((void *)CONFIG_SYS_TMPVIRT, 1));
return 0;
}