On Tue, Sep 04, 2018 at 06:16:52PM +0300, Tuomas Tynkkynen wrote:
> QEMU 3.0 introduced additional memory-mapped regions for PCI-E ECAM and
> MMIO. Thus we need to add them to our MMU map or U-Boot will crash with
> a Synchronous Abort during PCI-E probing when it tries to access the
> unmapped ECAM memory area.
>
> Reported-by: Jonathan Gray <j...@jsg.id.au>
> Signed-off-by: Tuomas Tynkkynen <tuomas.tynkky...@iki.fi>
Thanks, qemu-system-aarch64 -M virt works without having to disable
highmem with this.
Tested-by: Jonathan Gray <j...@jsg.id.au>
> ---
> board/emulation/qemu-arm/qemu-arm.c | 18 +++++++++++++++++-
> 1 file changed, 17 insertions(+), 1 deletion(-)
>
> diff --git a/board/emulation/qemu-arm/qemu-arm.c
> b/board/emulation/qemu-arm/qemu-arm.c
> index 1f5a33d520..812c90636d 100644
> --- a/board/emulation/qemu-arm/qemu-arm.c
> +++ b/board/emulation/qemu-arm/qemu-arm.c
> @@ -17,7 +17,7 @@ static struct mm_region qemu_arm64_mem_map[] = {
> .attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) |
> PTE_BLOCK_INNER_SHARE
> }, {
> - /* Peripherals */
> + /* Lowmem peripherals */
> .virt = 0x08000000UL,
> .phys = 0x08000000UL,
> .size = 0x38000000,
> @@ -31,6 +31,22 @@ static struct mm_region qemu_arm64_mem_map[] = {
> .size = 255UL * SZ_1G,
> .attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) |
> PTE_BLOCK_INNER_SHARE
> + }, {
> + /* Highmem PCI-E ECAM memory area */
> + .virt = 0x4010000000ULL,
> + .phys = 0x4010000000ULL,
> + .size = 0x10000000,
> + .attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
> + PTE_BLOCK_NON_SHARE |
> + PTE_BLOCK_PXN | PTE_BLOCK_UXN
> + }, {
> + /* Highmem PCI-E MMIO memory area */
> + .virt = 0x8000000000ULL,
> + .phys = 0x8000000000ULL,
> + .size = 0x8000000000ULL,
> + .attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
> + PTE_BLOCK_NON_SHARE |
> + PTE_BLOCK_PXN | PTE_BLOCK_UXN
> }, {
> /* List terminator */
> 0,
> --
> 2.16.3
>
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