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hw/loongarch: Add fdt support

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Add LoongArch flatted device tree, adding cpu device node, firmware cfg node,
pcie node into it, and create fdt rom memory region. Now fdt info is not
full since only uefi bios uses fdt, linux kernel does not use fdt.
Loongarch Linux kernel uses acpi table which is full in qemu virt
machine.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Xiaojuan Yang <yangxiaojuan@loongson.cn>
Message-Id: <20220712083206.4187715-7-yangxiaojuan@loongson.cn>
[rth: Set TARGET_NEED_FDT, add fdt to meson.build]
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Xiaojuan Yang 2022-07-12 16:32:06 +08:00 • committed by Richard Henderson
parent 735143f10d
commit fda3f15b00
6 changed files with 143 additions and 4 deletions
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3
target/loongarch/cpu.h
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@ -326,6 +326,9 @@ struct ArchCPU {
CPUNegativeOffsetState neg;
CPULoongArchState env;
QEMUTimer timer;
/* 'compatible' string for this CPU for Linux device trees */
const char *dtb_compatible;
};
#define TYPE_LOONGARCH_CPU "loongarch-cpu"