So that you can use virtio network, block etc create the virtio mmio instances. There are 128 of these even if they are not all used, a single mmio base value is passed via bootinfo.
Signed-off-by: Daniel Palmer <[email protected]> --- arch/m68k/Kconfig | 14 ++++---- board/emulation/qemu-m68k/qemu-m68k.c | 46 +++++++++++++++++++++++++++ 2 files changed, 54 insertions(+), 6 deletions(-) diff --git a/arch/m68k/Kconfig b/arch/m68k/Kconfig index 6ce8f577e3a1..20a112880c87 100644 --- a/arch/m68k/Kconfig +++ b/arch/m68k/Kconfig @@ -195,12 +195,14 @@ config TARGET_STMARK2 select M54418 config TARGET_QEMU_M68K - bool "Support QEMU m68k virt" - select M68040 - imply CMD_DM - help - This target supports the QEMU m68k virtual machine (-M virt). - It simulates a Motorola 68040 CPU with Goldfish peripherals. + bool "Support QEMU m68k virt" + select M68040 + select BOARD_EARLY_INIT_R + select VIRTIO_MMIO + imply CMD_DM + help + This target supports the QEMU m68k virtual machine (-M virt). + It simulates a Motorola 68040 CPU with Goldfish peripherals. endchoice diff --git a/board/emulation/qemu-m68k/qemu-m68k.c b/board/emulation/qemu-m68k/qemu-m68k.c index d3527aee1128..2517ecf1bb8c 100644 --- a/board/emulation/qemu-m68k/qemu-m68k.c +++ b/board/emulation/qemu-m68k/qemu-m68k.c @@ -14,9 +14,14 @@ #include <asm/bootinfo.h> #include <asm/global_data.h> #include <asm/io.h> +#include <dm.h> +#include <dm/device-internal.h> +#include <dm/lists.h> #include <dm/platdata.h> +#include <dm/root.h> #include <linux/errno.h> #include <linux/sizes.h> +#include <virtio_mmio.h> DECLARE_GLOBAL_DATA_PTR; @@ -25,6 +30,37 @@ static struct goldfish_rtc_plat rtc_plat; static struct goldfish_timer_plat timer_plat; static struct qemu_virt_ctrl_plat reset_plat; +#define VIRTIO_MMIO_NUM 128 +#define VIRTIO_MMIO_SZ 0x200 + +static struct virtio_mmio_plat virtio_mmio_plat[VIRTIO_MMIO_NUM] = { 0 }; +static char virtio_mmio_names[VIRTIO_MMIO_NUM][11] = { 0 }; +static phys_addr_t virtio_mmio_base = 0; + +static inline int create_virtio_mmios(void) +{ + struct driver *drv; + int i, ret; + + if (!virtio_mmio_base) + return -ENODEV; + + drv = lists_driver_lookup_name("virtio-mmio"); + if (!drv) + return -ENOENT; + + for (i = 0; i < VIRTIO_MMIO_NUM; i++) { + virtio_mmio_plat[i].base = virtio_mmio_base + (VIRTIO_MMIO_SZ * i); + sprintf(virtio_mmio_names[i], "virtio-%d", i); + + ret = device_bind(dm_root(), drv, virtio_mmio_names[i], &virtio_mmio_plat[i], ofnode_null(), NULL); + if (ret) + return ret; + } + + return 0; +} + /* * Theoretical limit derivation: * Max Bootinfo Size (Standard Page) = 4096 bytes @@ -65,6 +101,9 @@ static void parse_bootinfo(void) case BI_VIRT_CTRL_BASE: reset_plat.reg = base; break; + case BI_VIRT_VIRTIO_BASE: + virtio_mmio_base = base; + break; case BI_MEMCHUNK: gd->ram_size = record->data[1]; break; @@ -80,6 +119,13 @@ int board_early_init_f(void) return 0; } +int board_early_init_r(void) +{ + create_virtio_mmios(); + + return 0; +} + int checkboard(void) { puts("Board: QEMU m68k virt\n"); -- 2.51.0
