u-boot/board/emulation/qemu-arm/qemu-arm.c
Bin Meng b9b5956eb0 arm: qemu: Enumerate virtio bus during early boot
Currently devices on the virtio bus is not automatically enumerated,
which means peripherals on the virtio bus are not discovered by their
drivers. This uses board_init() to do the virtio enumeration.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2018-11-14 09:16:28 -08:00

93 lines
1.8 KiB
C

// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (c) 2017 Tuomas Tynkkynen
*/
#include <common.h>
#include <dm.h>
#include <fdtdec.h>
#include <virtio_types.h>
#include <virtio.h>
#ifdef CONFIG_ARM64
#include <asm/armv8/mmu.h>
static struct mm_region qemu_arm64_mem_map[] = {
{
/* Flash */
.virt = 0x00000000UL,
.phys = 0x00000000UL,
.size = 0x08000000UL,
.attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) |
PTE_BLOCK_INNER_SHARE
}, {
/* Lowmem peripherals */
.virt = 0x08000000UL,
.phys = 0x08000000UL,
.size = 0x38000000,
.attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
PTE_BLOCK_NON_SHARE |
PTE_BLOCK_PXN | PTE_BLOCK_UXN
}, {
/* RAM */
.virt = 0x40000000UL,
.phys = 0x40000000UL,
.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,
}
};
struct mm_region *mem_map = qemu_arm64_mem_map;
#endif
int board_init(void)
{
/*
* Make sure virtio bus is enumerated so that peripherals
* on the virtio bus can be discovered by their drivers
*/
virtio_init();
return 0;
}
int dram_init(void)
{
if (fdtdec_setup_mem_size_base() != 0)
return -EINVAL;
return 0;
}
int dram_init_banksize(void)
{
fdtdec_setup_memory_banksize();
return 0;
}
void *board_fdt_blob_setup(void)
{
/* QEMU loads a generated DTB for us at the start of RAM. */
return (void *)CONFIG_SYS_SDRAM_BASE;
}