MIPS virt board is design to utilize existing VirtIO infrastures
but also comptitable with MIPS's existing internal simulation tools.
It includes virtio-pci, virtio-mmio, pcie gpex, flash rom, fw_cfg,
goldfish-rtc and MIPS CPS system.
It should be able to cooperate with any MIPS CPU cores.
Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
---
v1:
- Rename to virt board
- Convert BIOS flash to ROM
- Cleanups
v2:
- Fix fdt flash
- Remove UP variant
---
MAINTAINERS | 7 +
configs/devices/mips-softmmu/common.mak | 1 +
docs/system/target-mips.rst | 22 +
hw/mips/Kconfig | 17 +
hw/mips/meson.build | 1 +
hw/mips/virt.c | 916 ++++++++++++++++++++++++
6 files changed, 964 insertions(+)
create mode 100644 hw/mips/virt.c
+static void gen_firmware(void *p, hwaddr kernel_entry, hwaddr fdt_addr)
+{
+ uint64_t regaddr;
+ const MemMapEntry *memmap = virt_memmap;
+
+ /* Move CM GCRs */
+ regaddr = cpu_mips_phys_to_kseg1(NULL, GCR_BASE_ADDR + GCR_BASE_OFS),
+ bl_gen_write_ulong(&p, regaddr, memmap[VIRT_CM].base);
+
+ /* Move & enable GIC GCRs */
+ regaddr = cpu_mips_phys_to_kseg1(NULL, memmap[VIRT_CM].base +
+ GCR_GIC_BASE_OFS),
+ bl_gen_write_ulong(&p, regaddr,
+ memmap[VIRT_GIC].base | GCR_GIC_BASE_GICEN_MSK);
+
+ /* Move & enable CPC GCRs */
+ regaddr = cpu_mips_phys_to_kseg1(NULL, memmap[VIRT_CM].base +
+ GCR_CPC_BASE_OFS),
+ bl_gen_write_ulong(&p, regaddr,
+ memmap[VIRT_CPC].base | GCR_CPC_BASE_CPCEN_MSK);
+
+ /*
+ * Setup argument registers to follow the UHI boot protocol:
+ *
+ * a0/$4 = -2
+ * a1/$5 = virtual address of FDT
+ * a2/$6 = 0
+ * a3/$7 = 0
+ */
+ bl_gen_jump_kernel(&p,
+ true, 0, true, (int32_t)-2,
+ true, fdt_addr, true, 0, true, 0,
+ kernel_entry);
+}