Merge tag 'pull-loongarch-20240429' of https://gitlab.com/gaosong/qemu into staging

Add boot LoongArch elf kernel with FDT

v2: Fix 'make check-tcg' fail.

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* tag 'pull-loongarch-20240429' of https://gitlab.com/gaosong/qemu:
  hw/loongarch: Add cells missing from rtc node
  hw/loongarch: Add cells missing from uart node
  hw/loongarch: fdt remove unused irqchip node
  hw/loongarch: fdt adds pcie irq_map node
  hw/loongarch: fdt adds pch_msi Controller
  hw/loongarch: fdt adds pch_pic Controller
  hw/loongarch: fdt adds Extend I/O Interrupt Controller
  hw/loongarch: fdt adds cpu interrupt controller node
  hw/loongarch: Fix fdt memory node wrong 'reg'
  hw/loongarch: Init efi_fdt table
  hw/loongarch: Init efi_initrd table
  hw/loongarch: Init efi_boot_memmap table
  hw/loongarch: Init efi_system_table
  hw/loongarch: Add init_cmdline
  hw/loongarch: Add slave cpu boot_code
  hw/loongarch: Add load initrd
  hw/loongarch: Move boot functions to boot.c

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

8 files changed, 670 insertions, 162 deletions

diff --git a/hw/loongarch/boot.c b/hw/loongarch/boot.c
new file mode 100644
index 0000000000..7d1630b2e7
--- /dev/null
+++ b/hw/loongarch/boot.c
@@ -0,0 +1,336 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * LoongArch boot helper functions.
+ *
+ * Copyright (c) 2023 Loongson Technology Corporation Limited
+ */
+
+#include "qemu/osdep.h"
+#include "qemu/units.h"
+#include "target/loongarch/cpu.h"
+#include "hw/loongarch/virt.h"
+#include "hw/loader.h"
+#include "elf.h"
+#include "qemu/error-report.h"
+#include "sysemu/reset.h"
+#include "sysemu/qtest.h"
+
+ram_addr_t initrd_offset;
+uint64_t initrd_size;
+
+static const unsigned int slave_boot_code[] = {
+                  /* Configure reset ebase.                    */
+    0x0400302c,   /* csrwr      $t0, LOONGARCH_CSR_EENTRY      */
+
+                  /* Disable interrupt.                        */
+    0x0380100c,   /* ori        $t0, $zero,0x4                 */
+    0x04000180,   /* csrxchg    $zero, $t0, LOONGARCH_CSR_CRMD */
+
+                  /* Clear mailbox.                            */
+    0x1400002d,   /* lu12i.w    $t1, 1(0x1)                    */
+    0x038081ad,   /* ori        $t1, $t1, CORE_BUF_20  */
+    0x06481da0,   /* iocsrwr.d  $zero, $t1                     */
+
+                  /* Enable IPI interrupt.                     */
+    0x1400002c,   /* lu12i.w    $t0, 1(0x1)                    */
+    0x0400118c,   /* csrxchg    $t0, $t0, LOONGARCH_CSR_ECFG   */
+    0x02fffc0c,   /* addi.d     $t0, $r0,-1(0xfff)             */
+    0x1400002d,   /* lu12i.w    $t1, 1(0x1)                    */
+    0x038011ad,   /* ori        $t1, $t1, CORE_EN_OFF          */
+    0x064819ac,   /* iocsrwr.w  $t0, $t1                       */
+    0x1400002d,   /* lu12i.w    $t1, 1(0x1)                    */
+    0x038081ad,   /* ori        $t1, $t1, CORE_BUF_20          */
+
+                  /* Wait for wakeup  <.L11>:                  */
+    0x06488000,   /* idle       0x0                            */
+    0x03400000,   /* andi       $zero, $zero, 0x0              */
+    0x064809ac,   /* iocsrrd.w  $t0, $t1                       */
+    0x43fff59f,   /* beqz       $t0, -12(0x7ffff4) # 48 <.L11> */
+
+                  /* Read and clear IPI interrupt.             */
+    0x1400002d,   /* lu12i.w    $t1, 1(0x1)                    */
+    0x064809ac,   /* iocsrrd.w  $t0, $t1                       */
+    0x1400002d,   /* lu12i.w    $t1, 1(0x1)                    */
+    0x038031ad,   /* ori        $t1, $t1, CORE_CLEAR_OFF       */
+    0x064819ac,   /* iocsrwr.w  $t0, $t1                       */
+
+                  /* Disable  IPI interrupt.                   */
+    0x1400002c,   /* lu12i.w    $t0, 1(0x1)                    */
+    0x04001180,   /* csrxchg    $zero, $t0, LOONGARCH_CSR_ECFG */
+
+                  /* Read mail buf and jump to specified entry */
+    0x1400002d,   /* lu12i.w    $t1, 1(0x1)                    */
+    0x038081ad,   /* ori        $t1, $t1, CORE_BUF_20          */
+    0x06480dac,   /* iocsrrd.d  $t0, $t1                       */
+    0x00150181,   /* move       $ra, $t0                       */
+    0x4c000020,   /* jirl       $zero, $ra,0                   */
+};
+
+static inline void *guidcpy(void *dst, const void *src)
+{
+    return memcpy(dst, src, sizeof(efi_guid_t));
+}
+
+static void init_efi_boot_memmap(struct efi_system_table *systab,
+                                 void *p, void *start)
+{
+    unsigned i;
+    struct efi_boot_memmap *boot_memmap = p;
+    efi_guid_t tbl_guid = LINUX_EFI_BOOT_MEMMAP_GUID;
+
+    /* efi_configuration_table 1 */
+    guidcpy(&systab->tables[0].guid, &tbl_guid);
+    systab->tables[0].table = (struct efi_configuration_table *)(p - start);
+    systab->nr_tables = 1;
+
+    boot_memmap->desc_size = sizeof(efi_memory_desc_t);
+    boot_memmap->desc_ver = 1;
+    boot_memmap->map_size = 0;
+
+    efi_memory_desc_t *map = p + sizeof(struct efi_boot_memmap);
+    for (i = 0; i < memmap_entries; i++) {
+        map = (void *)boot_memmap + sizeof(*map);
+        map[i].type = memmap_table[i].type;
+        map[i].phys_addr = ROUND_UP(memmap_table[i].address, 64 * KiB);
+        map[i].num_pages = ROUND_DOWN(memmap_table[i].address +
+                        memmap_table[i].length - map[i].phys_addr, 64 * KiB);
+        p += sizeof(efi_memory_desc_t);
+    }
+}
+
+static void init_efi_initrd_table(struct efi_system_table *systab,
+                                  void *p, void *start)
+{
+    efi_guid_t tbl_guid = LINUX_EFI_INITRD_MEDIA_GUID;
+    struct efi_initrd *initrd_table  = p;
+
+    /* efi_configuration_table 2 */
+    guidcpy(&systab->tables[1].guid, &tbl_guid);
+    systab->tables[1].table = (struct efi_configuration_table *)(p - start);
+    systab->nr_tables = 2;
+
+    initrd_table->base = initrd_offset;
+    initrd_table->size = initrd_size;
+}
+
+static void init_efi_fdt_table(struct efi_system_table *systab)
+{
+    efi_guid_t tbl_guid = DEVICE_TREE_GUID;
+
+    /* efi_configuration_table 3 */
+    guidcpy(&systab->tables[2].guid, &tbl_guid);
+    systab->tables[2].table = (void *)FDT_BASE;
+    systab->nr_tables = 3;
+}
+
+static void init_systab(struct loongarch_boot_info *info, void *p, void *start)
+{
+    void *bp_tables_start;
+    struct efi_system_table *systab = p;
+
+    info->a2 = p - start;
+
+    systab->hdr.signature = EFI_SYSTEM_TABLE_SIGNATURE;
+    systab->hdr.revision = EFI_SPECIFICATION_VERSION;
+    systab->hdr.revision = sizeof(struct efi_system_table),
+    systab->fw_revision = FW_VERSION << 16 | FW_PATCHLEVEL << 8;
+    systab->runtime = 0;
+    systab->boottime = 0;
+    systab->nr_tables = 0;
+
+    p += ROUND_UP(sizeof(struct efi_system_table), 64 * KiB);
+
+    systab->tables = p;
+    bp_tables_start = p;
+
+    init_efi_boot_memmap(systab, p, start);
+    p += ROUND_UP(sizeof(struct efi_boot_memmap) +
+                  sizeof(efi_memory_desc_t) * memmap_entries, 64 * KiB);
+    init_efi_initrd_table(systab, p, start);
+    p += ROUND_UP(sizeof(struct efi_initrd), 64 * KiB);
+    init_efi_fdt_table(systab);
+
+    systab->tables = (struct efi_configuration_table *)(bp_tables_start - start);
+}
+
+static void init_cmdline(struct loongarch_boot_info *info, void *p, void *start)
+{
+    hwaddr cmdline_addr = p - start;
+
+    info->a0 = 1;
+    info->a1 = cmdline_addr;
+
+    memcpy(p, info->kernel_cmdline, COMMAND_LINE_SIZE);
+}
+
+static uint64_t cpu_loongarch_virt_to_phys(void *opaque, uint64_t addr)
+{
+    return addr & MAKE_64BIT_MASK(0, TARGET_PHYS_ADDR_SPACE_BITS);
+}
+
+static int64_t load_kernel_info(struct loongarch_boot_info *info)
+{
+    uint64_t kernel_entry, kernel_low, kernel_high;
+    ssize_t kernel_size;
+
+    kernel_size = load_elf(info->kernel_filename, NULL,
+                           cpu_loongarch_virt_to_phys, NULL,
+                           &kernel_entry, &kernel_low,
+                           &kernel_high, NULL, 0,
+                           EM_LOONGARCH, 1, 0);
+
+    if (kernel_size < 0) {
+        error_report("could not load kernel '%s': %s",
+                     info->kernel_filename,
+                     load_elf_strerror(kernel_size));
+        exit(1);
+    }
+
+    if (info->initrd_filename) {
+        initrd_size = get_image_size(info->initrd_filename);
+        if (initrd_size > 0) {
+            initrd_offset = ROUND_UP(kernel_high + 4 * kernel_size, 64 * KiB);
+
+            if (initrd_offset + initrd_size > info->ram_size) {
+                error_report("memory too small for initial ram disk '%s'",
+                             info->initrd_filename);
+                exit(1);
+            }
+
+            initrd_size = load_image_targphys(info->initrd_filename, initrd_offset,
+                                              info->ram_size - initrd_offset);
+        }
+
+        if (initrd_size == (target_ulong)-1) {
+            error_report("could not load initial ram disk '%s'",
+                         info->initrd_filename);
+            exit(1);
+        }
+    } else {
+        initrd_size = 0;
+    }
+
+    return kernel_entry;
+}
+
+static void reset_load_elf(void *opaque)
+{
+    LoongArchCPU *cpu = opaque;
+    CPULoongArchState *env = &cpu->env;
+
+    cpu_reset(CPU(cpu));
+    if (env->load_elf) {
+	if (cpu == LOONGARCH_CPU(first_cpu)) {
+            env->gpr[4] = env->boot_info->a0;
+            env->gpr[5] = env->boot_info->a1;
+            env->gpr[6] = env->boot_info->a2;
+        }
+        cpu_set_pc(CPU(cpu), env->elf_address);
+    }
+}
+
+static void fw_cfg_add_kernel_info(struct loongarch_boot_info *info,
+                                   FWCfgState *fw_cfg)
+{
+    /*
+     * Expose the kernel, the command line, and the initrd in fw_cfg.
+     * We don't process them here at all, it's all left to the
+     * firmware.
+     */
+    load_image_to_fw_cfg(fw_cfg,
+                         FW_CFG_KERNEL_SIZE, FW_CFG_KERNEL_DATA,
+                         info->kernel_filename,
+                         false);
+
+    if (info->initrd_filename) {
+        load_image_to_fw_cfg(fw_cfg,
+                             FW_CFG_INITRD_SIZE, FW_CFG_INITRD_DATA,
+                             info->initrd_filename, false);
+    }
+
+    if (info->kernel_cmdline) {
+        fw_cfg_add_i32(fw_cfg, FW_CFG_CMDLINE_SIZE,
+                       strlen(info->kernel_cmdline) + 1);
+        fw_cfg_add_string(fw_cfg, FW_CFG_CMDLINE_DATA,
+                          info->kernel_cmdline);
+    }
+}
+
+static void loongarch_firmware_boot(LoongArchMachineState *lams,
+                                    struct loongarch_boot_info *info)
+{
+    fw_cfg_add_kernel_info(info, lams->fw_cfg);
+}
+
+static void init_boot_rom(struct loongarch_boot_info *info, void *p)
+{
+    void *start = p;
+
+    init_cmdline(info, p, start);
+    p += COMMAND_LINE_SIZE;
+
+    init_systab(info, p, start);
+}
+
+static void loongarch_direct_kernel_boot(struct loongarch_boot_info *info)
+{
+    void *p, *bp;
+    int64_t kernel_addr = 0;
+    LoongArchCPU *lacpu;
+    CPUState *cs;
+
+    if (info->kernel_filename) {
+        kernel_addr = load_kernel_info(info);
+    } else {
+        if(!qtest_enabled()) {
+            error_report("Need kernel filename\n");
+            exit(1);
+        }
+    }
+
+    /* Load cmdline and system tables at [0 - 1 MiB] */
+    p = g_malloc0(1 * MiB);
+    bp = p;
+    init_boot_rom(info, p);
+    rom_add_blob_fixed_as("boot_info", bp, 1 * MiB, 0, &address_space_memory);
+
+    /* Load slave boot code at pflash0 . */
+    void *boot_code = g_malloc0(VIRT_FLASH0_SIZE);
+    memcpy(boot_code, &slave_boot_code, sizeof(slave_boot_code));
+    rom_add_blob_fixed("boot_code", boot_code, VIRT_FLASH0_SIZE, VIRT_FLASH0_BASE);
+
+    CPU_FOREACH(cs) {
+        lacpu = LOONGARCH_CPU(cs);
+        lacpu->env.load_elf = true;
+        if (cs == first_cpu) {
+            lacpu->env.elf_address = kernel_addr;
+        } else {
+            lacpu->env.elf_address = VIRT_FLASH0_BASE;
+        }
+        lacpu->env.boot_info = info;
+    }
+
+    g_free(boot_code);
+    g_free(bp);
+}
+
+void loongarch_load_kernel(MachineState *ms, struct loongarch_boot_info *info)
+{
+    LoongArchMachineState *lams = LOONGARCH_MACHINE(ms);
+    int i;
+
+    /* register reset function */
+    for (i = 0; i < ms->smp.cpus; i++) {
+        qemu_register_reset(reset_load_elf, LOONGARCH_CPU(qemu_get_cpu(i)));
+    }
+
+    info->kernel_filename = ms->kernel_filename;
+    info->kernel_cmdline = ms->kernel_cmdline;
+    info->initrd_filename = ms->initrd_filename;
+
+    if (lams->bios_loaded) {
+        loongarch_firmware_boot(lams, info);
+    } else {
+        loongarch_direct_kernel_boot(info);
+    }
+}
diff --git a/hw/loongarch/meson.build b/hw/loongarch/meson.build
index c0421502ab..d306d82c2e 100644
--- a/hw/loongarch/meson.build
+++ b/hw/loongarch/meson.build
@@ -1,6 +1,7 @@
 loongarch_ss = ss.source_set()
 loongarch_ss.add(files(
     'fw_cfg.c',
+    'boot.c',
 ))
 loongarch_ss.add(when: 'CONFIG_LOONGARCH_VIRT', if_true: [files('virt.c'), fdt])
 loongarch_ss.add(when: 'CONFIG_ACPI', if_true: files('acpi-build.c'))
diff --git a/hw/loongarch/virt.c b/hw/loongarch/virt.c
index 441d764843..c0999878df 100644
--- a/hw/loongarch/virt.c
+++ b/hw/loongarch/virt.c
@@ -46,14 +46,6 @@
 #include "hw/block/flash.h"
 #include "qemu/error-report.h"
 
-
-struct loaderparams {
-    uint64_t ram_size;
-    const char *kernel_filename;
-    const char *kernel_cmdline;
-    const char *initrd_filename;
-};
-
 static PFlashCFI01 *virt_flash_create1(LoongArchMachineState *lams,
                                        const char *name,
                                        const char *alias_prop_name)
@@ -114,6 +106,101 @@ static void virt_flash_map(LoongArchMachineState *lams,
     virt_flash_map1(flash1, VIRT_FLASH1_BASE, VIRT_FLASH1_SIZE, sysmem);
 }
 
+static void fdt_add_cpuic_node(LoongArchMachineState *lams,
+                               uint32_t *cpuintc_phandle)
+{
+    MachineState *ms = MACHINE(lams);
+    char *nodename;
+
+    *cpuintc_phandle = qemu_fdt_alloc_phandle(ms->fdt);
+    nodename = g_strdup_printf("/cpuic");
+    qemu_fdt_add_subnode(ms->fdt, nodename);
+    qemu_fdt_setprop_cell(ms->fdt, nodename, "phandle", *cpuintc_phandle);
+    qemu_fdt_setprop_string(ms->fdt, nodename, "compatible",
+                            "loongson,cpu-interrupt-controller");
+    qemu_fdt_setprop(ms->fdt, nodename, "interrupt-controller", NULL, 0);
+    qemu_fdt_setprop_cell(ms->fdt, nodename, "#interrupt-cells", 1);
+    g_free(nodename);
+}
+
+static void fdt_add_eiointc_node(LoongArchMachineState *lams,
+                                  uint32_t *cpuintc_phandle,
+                                  uint32_t *eiointc_phandle)
+{
+    MachineState *ms = MACHINE(lams);
+    char *nodename;
+    hwaddr extioi_base = APIC_BASE;
+    hwaddr extioi_size = EXTIOI_SIZE;
+
+    *eiointc_phandle = qemu_fdt_alloc_phandle(ms->fdt);
+    nodename = g_strdup_printf("/eiointc@%" PRIx64, extioi_base);
+    qemu_fdt_add_subnode(ms->fdt, nodename);
+    qemu_fdt_setprop_cell(ms->fdt, nodename, "phandle", *eiointc_phandle);
+    qemu_fdt_setprop_string(ms->fdt, nodename, "compatible",
+                            "loongson,ls2k2000-eiointc");
+    qemu_fdt_setprop(ms->fdt, nodename, "interrupt-controller", NULL, 0);
+    qemu_fdt_setprop_cell(ms->fdt, nodename, "#interrupt-cells", 1);
+    qemu_fdt_setprop_cell(ms->fdt, nodename, "interrupt-parent",
+                          *cpuintc_phandle);
+    qemu_fdt_setprop_cell(ms->fdt, nodename, "interrupts", 3);
+    qemu_fdt_setprop_cells(ms->fdt, nodename, "reg", 0x0,
+                           extioi_base, 0x0, extioi_size);
+    g_free(nodename);
+}
+
+static void fdt_add_pch_pic_node(LoongArchMachineState *lams,
+                                 uint32_t *eiointc_phandle,
+                                 uint32_t *pch_pic_phandle)
+{
+    MachineState *ms = MACHINE(lams);
+    char *nodename;
+    hwaddr pch_pic_base = VIRT_PCH_REG_BASE;
+    hwaddr pch_pic_size = VIRT_PCH_REG_SIZE;
+
+    *pch_pic_phandle = qemu_fdt_alloc_phandle(ms->fdt);
+    nodename = g_strdup_printf("/platic@%" PRIx64, pch_pic_base);
+    qemu_fdt_add_subnode(ms->fdt, nodename);
+    qemu_fdt_setprop_cell(ms->fdt,  nodename, "phandle", *pch_pic_phandle);
+    qemu_fdt_setprop_string(ms->fdt, nodename, "compatible",
+                            "loongson,pch-pic-1.0");
+    qemu_fdt_setprop_cells(ms->fdt, nodename, "reg", 0,
+                           pch_pic_base, 0, pch_pic_size);
+    qemu_fdt_setprop(ms->fdt, nodename, "interrupt-controller", NULL, 0);
+    qemu_fdt_setprop_cell(ms->fdt, nodename, "#interrupt-cells", 2);
+    qemu_fdt_setprop_cell(ms->fdt, nodename, "interrupt-parent",
+                          *eiointc_phandle);
+    qemu_fdt_setprop_cell(ms->fdt, nodename, "loongson,pic-base-vec", 0);
+    g_free(nodename);
+}
+
+static void fdt_add_pch_msi_node(LoongArchMachineState *lams,
+                                 uint32_t *eiointc_phandle,
+                                 uint32_t *pch_msi_phandle)
+{
+    MachineState *ms = MACHINE(lams);
+    char *nodename;
+    hwaddr pch_msi_base = VIRT_PCH_MSI_ADDR_LOW;
+    hwaddr pch_msi_size = VIRT_PCH_MSI_SIZE;
+
+    *pch_msi_phandle = qemu_fdt_alloc_phandle(ms->fdt);
+    nodename = g_strdup_printf("/msi@%" PRIx64, pch_msi_base);
+    qemu_fdt_add_subnode(ms->fdt, nodename);
+    qemu_fdt_setprop_cell(ms->fdt, nodename, "phandle", *pch_msi_phandle);
+    qemu_fdt_setprop_string(ms->fdt, nodename, "compatible",
+                            "loongson,pch-msi-1.0");
+    qemu_fdt_setprop_cells(ms->fdt, nodename, "reg",
+                           0, pch_msi_base,
+                           0, pch_msi_size);
+    qemu_fdt_setprop(ms->fdt, nodename, "interrupt-controller", NULL, 0);
+    qemu_fdt_setprop_cell(ms->fdt, nodename, "interrupt-parent",
+                          *eiointc_phandle);
+    qemu_fdt_setprop_cell(ms->fdt, nodename, "loongson,msi-base-vec",
+                          VIRT_PCH_PIC_IRQ_NUM);
+    qemu_fdt_setprop_cell(ms->fdt, nodename, "loongson,msi-num-vecs",
+                          EXTIOI_IRQS - VIRT_PCH_PIC_IRQ_NUM);
+    g_free(nodename);
+}
+
 static void fdt_add_flash_node(LoongArchMachineState *lams)
 {
     MachineState *ms = MACHINE(lams);
@@ -144,7 +231,8 @@ static void fdt_add_flash_node(LoongArchMachineState *lams)
     g_free(nodename);
 }
 
-static void fdt_add_rtc_node(LoongArchMachineState *lams)
+static void fdt_add_rtc_node(LoongArchMachineState *lams,
+                             uint32_t *pch_pic_phandle)
 {
     char *nodename;
     hwaddr base = VIRT_RTC_REG_BASE;
@@ -153,12 +241,18 @@ static void fdt_add_rtc_node(LoongArchMachineState *lams)
 
     nodename = g_strdup_printf("/rtc@%" PRIx64, base);
     qemu_fdt_add_subnode(ms->fdt, nodename);
-    qemu_fdt_setprop_string(ms->fdt, nodename, "compatible", "loongson,ls7a-rtc");
+    qemu_fdt_setprop_string(ms->fdt, nodename, "compatible",
+                            "loongson,ls7a-rtc");
     qemu_fdt_setprop_sized_cells(ms->fdt, nodename, "reg", 2, base, 2, size);
+    qemu_fdt_setprop_cells(ms->fdt, nodename, "interrupts",
+                           VIRT_RTC_IRQ - VIRT_GSI_BASE , 0x4);
+    qemu_fdt_setprop_cell(ms->fdt, nodename, "interrupt-parent",
+                          *pch_pic_phandle);
     g_free(nodename);
 }
 
-static void fdt_add_uart_node(LoongArchMachineState *lams)
+static void fdt_add_uart_node(LoongArchMachineState *lams,
+                              uint32_t *pch_pic_phandle)
 {
     char *nodename;
     hwaddr base = VIRT_UART_BASE;
@@ -171,6 +265,10 @@ static void fdt_add_uart_node(LoongArchMachineState *lams)
     qemu_fdt_setprop_cells(ms->fdt, nodename, "reg", 0x0, base, 0x0, size);
     qemu_fdt_setprop_cell(ms->fdt, nodename, "clock-frequency", 100000000);
     qemu_fdt_setprop_string(ms->fdt, "/chosen", "stdout-path", nodename);
+    qemu_fdt_setprop_cells(ms->fdt, nodename, "interrupts",
+                           VIRT_UART_IRQ - VIRT_GSI_BASE, 0x4);
+    qemu_fdt_setprop_cell(ms->fdt, nodename, "interrupt-parent",
+                          *pch_pic_phandle);
     g_free(nodename);
 }
 
@@ -265,7 +363,62 @@ static void fdt_add_fw_cfg_node(const LoongArchMachineState *lams)
     g_free(nodename);
 }
 
-static void fdt_add_pcie_node(const LoongArchMachineState *lams)
+static void fdt_add_pcie_irq_map_node(const LoongArchMachineState *lams,
+                                      char *nodename,
+                                      uint32_t *pch_pic_phandle)
+{
+    int pin, dev;
+    uint32_t irq_map_stride = 0;
+    uint32_t full_irq_map[GPEX_NUM_IRQS *GPEX_NUM_IRQS * 10] = {};
+    uint32_t *irq_map = full_irq_map;
+    const MachineState *ms = MACHINE(lams);
+
+    /* This code creates a standard swizzle of interrupts such that
+     * each device's first interrupt is based on it's PCI_SLOT number.
+     * (See pci_swizzle_map_irq_fn())
+     *
+     * We only need one entry per interrupt in the table (not one per
+     * possible slot) seeing the interrupt-map-mask will allow the table
+     * to wrap to any number of devices.
+     */
+
+    for (dev = 0; dev < GPEX_NUM_IRQS; dev++) {
+        int devfn = dev * 0x8;
+
+        for (pin = 0; pin  < GPEX_NUM_IRQS; pin++) {
+            int irq_nr = 16 + ((pin + PCI_SLOT(devfn)) % GPEX_NUM_IRQS);
+            int i = 0;
+
+            /* Fill PCI address cells */
+            irq_map[i] = cpu_to_be32(devfn << 8);
+            i += 3;
+
+            /* Fill PCI Interrupt cells */
+            irq_map[i] = cpu_to_be32(pin + 1);
+            i += 1;
+
+            /* Fill interrupt controller phandle and cells */
+            irq_map[i++] = cpu_to_be32(*pch_pic_phandle);
+            irq_map[i++] = cpu_to_be32(irq_nr);
+
+            if (!irq_map_stride) {
+                irq_map_stride = i;
+            }
+            irq_map += irq_map_stride;
+        }
+    }
+
+
+    qemu_fdt_setprop(ms->fdt, nodename, "interrupt-map", full_irq_map,
+                     GPEX_NUM_IRQS * GPEX_NUM_IRQS *
+                     irq_map_stride * sizeof(uint32_t));
+    qemu_fdt_setprop_cells(ms->fdt, nodename, "interrupt-map-mask",
+                     0x1800, 0, 0, 0x7);
+}
+
+static void fdt_add_pcie_node(const LoongArchMachineState *lams,
+                              uint32_t *pch_pic_phandle,
+                              uint32_t *pch_msi_phandle)
 {
     char *nodename;
     hwaddr base_mmio = VIRT_PCI_MEM_BASE;
@@ -296,34 +449,11 @@ static void fdt_add_pcie_node(const LoongArchMachineState *lams)
                                  2, base_pio, 2, size_pio,
                                  1, FDT_PCI_RANGE_MMIO, 2, base_mmio,
                                  2, base_mmio, 2, size_mmio);
-    g_free(nodename);
-}
-
-static void fdt_add_irqchip_node(LoongArchMachineState *lams)
-{
-    MachineState *ms = MACHINE(lams);
-    char *nodename;
-    uint32_t irqchip_phandle;
+    qemu_fdt_setprop_cells(ms->fdt, nodename, "msi-map",
+                           0, *pch_msi_phandle, 0, 0x10000);
 
-    irqchip_phandle = qemu_fdt_alloc_phandle(ms->fdt);
-    qemu_fdt_setprop_cell(ms->fdt, "/", "interrupt-parent", irqchip_phandle);
+    fdt_add_pcie_irq_map_node(lams, nodename, pch_pic_phandle);
 
-    nodename = g_strdup_printf("/intc@%lx", VIRT_IOAPIC_REG_BASE);
-    qemu_fdt_add_subnode(ms->fdt, nodename);
-    qemu_fdt_setprop_cell(ms->fdt, nodename, "#interrupt-cells", 3);
-    qemu_fdt_setprop(ms->fdt, nodename, "interrupt-controller", NULL, 0);
-    qemu_fdt_setprop_cell(ms->fdt, nodename, "#address-cells", 0x2);
-    qemu_fdt_setprop_cell(ms->fdt, nodename, "#size-cells", 0x2);
-    qemu_fdt_setprop(ms->fdt, nodename, "ranges", NULL, 0);
-
-    qemu_fdt_setprop_string(ms->fdt, nodename, "compatible",
-                            "loongarch,ls7a");
-
-    qemu_fdt_setprop_sized_cells(ms->fdt, nodename, "reg",
-                                 2, VIRT_IOAPIC_REG_BASE,
-                                 2, PCH_PIC_ROUTE_ENTRY_OFFSET);
-
-    qemu_fdt_setprop_cell(ms->fdt, nodename, "phandle", irqchip_phandle);
     g_free(nodename);
 }
 
@@ -333,7 +463,7 @@ static void fdt_add_memory_node(MachineState *ms,
     char *nodename = g_strdup_printf("/memory@%" PRIx64, base);
 
     qemu_fdt_add_subnode(ms->fdt, nodename);
-    qemu_fdt_setprop_cells(ms->fdt, nodename, "reg", 2, base, 2, size);
+    qemu_fdt_setprop_cells(ms->fdt, nodename, "reg", 0, base, 0, size);
     qemu_fdt_setprop_string(ms->fdt, nodename, "device_type", "memory");
 
     if (ms->numa_state && ms->numa_state->num_nodes) {
@@ -386,15 +516,8 @@ static void virt_powerdown_req(Notifier *notifier, void *opaque)
     acpi_send_event(s->acpi_ged, ACPI_POWER_DOWN_STATUS);
 }
 
-struct memmap_entry {
-    uint64_t address;
-    uint64_t length;
-    uint32_t type;
-    uint32_t reserved;
-};
-
-static struct memmap_entry *memmap_table;
-static unsigned memmap_entries;
+struct memmap_entry *memmap_table;
+unsigned memmap_entries;
 
 static void memmap_add_entry(uint64_t address, uint64_t length, uint32_t type)
 {
@@ -412,31 +535,6 @@ static void memmap_add_entry(uint64_t address, uint64_t length, uint32_t type)
     memmap_entries++;
 }
 
-static uint64_t cpu_loongarch_virt_to_phys(void *opaque, uint64_t addr)
-{
-    return addr & MAKE_64BIT_MASK(0, TARGET_PHYS_ADDR_SPACE_BITS);
-}
-
-static int64_t load_kernel_info(const struct loaderparams *loaderparams)
-{
-    uint64_t kernel_entry, kernel_low, kernel_high;
-    ssize_t kernel_size;
-
-    kernel_size = load_elf(loaderparams->kernel_filename, NULL,
-                           cpu_loongarch_virt_to_phys, NULL,
-                           &kernel_entry, &kernel_low,
-                           &kernel_high, NULL, 0,
-                           EM_LOONGARCH, 1, 0);
-
-    if (kernel_size < 0) {
-        error_report("could not load kernel '%s': %s",
-                     loaderparams->kernel_filename,
-                     load_elf_strerror(kernel_size));
-        exit(1);
-    }
-    return kernel_entry;
-}
-
 static DeviceState *create_acpi_ged(DeviceState *pch_pic, LoongArchMachineState *lams)
 {
     DeviceState *dev;
@@ -487,7 +585,10 @@ static DeviceState *create_platform_bus(DeviceState *pch_pic)
     return dev;
 }
 
-static void loongarch_devices_init(DeviceState *pch_pic, LoongArchMachineState *lams)
+static void loongarch_devices_init(DeviceState *pch_pic,
+                                   LoongArchMachineState *lams,
+                                   uint32_t *pch_pic_phandle,
+                                   uint32_t *pch_msi_phandle)
 {
     MachineClass *mc = MACHINE_GET_CLASS(lams);
     DeviceState *gpex_dev;
@@ -533,11 +634,14 @@ static void loongarch_devices_init(DeviceState *pch_pic, LoongArchMachineState *
         gpex_set_irq_num(GPEX_HOST(gpex_dev), i, 16 + i);
     }
 
+    /* Add pcie node */
+    fdt_add_pcie_node(lams, pch_pic_phandle, pch_msi_phandle);
+
     serial_mm_init(get_system_memory(), VIRT_UART_BASE, 0,
                    qdev_get_gpio_in(pch_pic,
                                     VIRT_UART_IRQ - VIRT_GSI_BASE),
                    115200, serial_hd(0), DEVICE_LITTLE_ENDIAN);
-    fdt_add_uart_node(lams);
+    fdt_add_uart_node(lams, pch_pic_phandle);
 
     /* Network init */
     pci_init_nic_devices(pci_bus, mc->default_nic);
@@ -550,7 +654,7 @@ static void loongarch_devices_init(DeviceState *pch_pic, LoongArchMachineState *
     sysbus_create_simple("ls7a_rtc", VIRT_RTC_REG_BASE,
                          qdev_get_gpio_in(pch_pic,
                          VIRT_RTC_IRQ - VIRT_GSI_BASE));
-    fdt_add_rtc_node(lams);
+    fdt_add_rtc_node(lams, pch_pic_phandle);
 
     /* acpi ged */
     lams->acpi_ged = create_acpi_ged(pch_pic, lams);
@@ -568,6 +672,7 @@ static void loongarch_irq_init(LoongArchMachineState *lams)
     CPULoongArchState *env;
     CPUState *cpu_state;
     int cpu, pin, i, start, num;
+    uint32_t cpuintc_phandle, eiointc_phandle, pch_pic_phandle, pch_msi_phandle;
 
     /*
      * The connection of interrupts:
@@ -602,6 +707,9 @@ static void loongarch_irq_init(LoongArchMachineState *lams)
     memory_region_add_subregion(&lams->system_iocsr, MAIL_SEND_ADDR,
                    sysbus_mmio_get_region(SYS_BUS_DEVICE(ipi), 1));
 
+    /* Add cpu interrupt-controller */
+    fdt_add_cpuic_node(lams, &cpuintc_phandle);
+
     for (cpu = 0; cpu < ms->smp.cpus; cpu++) {
         cpu_state = qemu_get_cpu(cpu);
         cpudev = DEVICE(cpu_state);
@@ -633,6 +741,9 @@ static void loongarch_irq_init(LoongArchMachineState *lams)
         }
     }
 
+    /* Add Extend I/O Interrupt Controller node */
+    fdt_add_eiointc_node(lams, &cpuintc_phandle, &eiointc_phandle);
+
     pch_pic = qdev_new(TYPE_LOONGARCH_PCH_PIC);
     num = VIRT_PCH_PIC_IRQ_NUM;
     qdev_prop_set_uint32(pch_pic, "pch_pic_irq_num", num);
@@ -652,6 +763,9 @@ static void loongarch_irq_init(LoongArchMachineState *lams)
         qdev_connect_gpio_out(DEVICE(d), i, qdev_get_gpio_in(extioi, i));
     }
 
+    /* Add PCH PIC node */
+    fdt_add_pch_pic_node(lams, &eiointc_phandle, &pch_pic_phandle);
+
     pch_msi = qdev_new(TYPE_LOONGARCH_PCH_MSI);
     start   =  num;
     num = EXTIOI_IRQS - start;
@@ -666,7 +780,10 @@ static void loongarch_irq_init(LoongArchMachineState *lams)
                               qdev_get_gpio_in(extioi, i + start));
     }
 
-    loongarch_devices_init(pch_pic, lams);
+    /* Add PCH MSI node */
+    fdt_add_pch_msi_node(lams, &eiointc_phandle, &pch_msi_phandle);
+
+    loongarch_devices_init(pch_pic, lams, &pch_pic_phandle, &pch_msi_phandle);
 }
 
 static void loongarch_firmware_init(LoongArchMachineState *lams)
@@ -717,67 +834,6 @@ static void loongarch_firmware_init(LoongArchMachineState *lams)
     }
 }
 
-static void reset_load_elf(void *opaque)
-{
-    LoongArchCPU *cpu = opaque;
-    CPULoongArchState *env = &cpu->env;
-
-    cpu_reset(CPU(cpu));
-    if (env->load_elf) {
-        cpu_set_pc(CPU(cpu), env->elf_address);
-    }
-}
-
-static void fw_cfg_add_kernel_info(const struct loaderparams *loaderparams,
-                                   FWCfgState *fw_cfg)
-{
-    /*
-     * Expose the kernel, the command line, and the initrd in fw_cfg.
-     * We don't process them here at all, it's all left to the
-     * firmware.
-     */
-    load_image_to_fw_cfg(fw_cfg,
-                         FW_CFG_KERNEL_SIZE, FW_CFG_KERNEL_DATA,
-                         loaderparams->kernel_filename,
-                         false);
-
-    if (loaderparams->initrd_filename) {
-        load_image_to_fw_cfg(fw_cfg,
-                             FW_CFG_INITRD_SIZE, FW_CFG_INITRD_DATA,
-                             loaderparams->initrd_filename, false);
-    }
-
-    if (loaderparams->kernel_cmdline) {
-        fw_cfg_add_i32(fw_cfg, FW_CFG_CMDLINE_SIZE,
-                       strlen(loaderparams->kernel_cmdline) + 1);
-        fw_cfg_add_string(fw_cfg, FW_CFG_CMDLINE_DATA,
-                          loaderparams->kernel_cmdline);
-    }
-}
-
-static void loongarch_firmware_boot(LoongArchMachineState *lams,
-                                    const struct loaderparams *loaderparams)
-{
-    fw_cfg_add_kernel_info(loaderparams, lams->fw_cfg);
-}
-
-static void loongarch_direct_kernel_boot(LoongArchMachineState *lams,
-                                         const struct loaderparams *loaderparams)
-{
-    MachineState *machine = MACHINE(lams);
-    int64_t kernel_addr = 0;
-    LoongArchCPU *lacpu;
-    int i;
-
-    kernel_addr = load_kernel_info(loaderparams);
-    if (!machine->firmware) {
-        for (i = 0; i < machine->smp.cpus; i++) {
-            lacpu = LOONGARCH_CPU(qemu_get_cpu(i));
-            lacpu->env.load_elf = true;
-            lacpu->env.elf_address = kernel_addr;
-        }
-    }
-}
 
 static void loongarch_qemu_write(void *opaque, hwaddr addr,
                                  uint64_t val, unsigned size)
@@ -828,12 +884,10 @@ static void loongarch_init(MachineState *machine)
     int nb_numa_nodes = machine->numa_state->num_nodes;
     NodeInfo *numa_info = machine->numa_state->nodes;
     int i;
-    hwaddr fdt_base;
     const CPUArchIdList *possible_cpus;
     MachineClass *mc = MACHINE_GET_CLASS(machine);
     CPUState *cpu;
     char *ramName = NULL;
-    struct loaderparams loaderparams = { };
 
     if (!cpu_model) {
         cpu_model = LOONGARCH_CPU_TYPE_NAME("la464");
@@ -936,28 +990,11 @@ static void loongarch_init(MachineState *machine)
                         sizeof(struct memmap_entry) * (memmap_entries));
     }
     fdt_add_fw_cfg_node(lams);
-    loaderparams.ram_size = ram_size;
-    loaderparams.kernel_filename = machine->kernel_filename;
-    loaderparams.kernel_cmdline = machine->kernel_cmdline;
-    loaderparams.initrd_filename = machine->initrd_filename;
-    /* load the kernel. */
-    if (loaderparams.kernel_filename) {
-        if (lams->bios_loaded) {
-            loongarch_firmware_boot(lams, &loaderparams);
-        } else {
-            loongarch_direct_kernel_boot(lams, &loaderparams);
-        }
-    }
     fdt_add_flash_node(lams);
-    /* register reset function */
-    for (i = 0; i < machine->smp.cpus; i++) {
-        lacpu = LOONGARCH_CPU(qemu_get_cpu(i));
-        qemu_register_reset(reset_load_elf, lacpu);
-    }
+
     /* Initialize the IO interrupt subsystem */
     loongarch_irq_init(lams);
-    fdt_add_irqchip_node(lams);
-    platform_bus_add_all_fdt_nodes(machine->fdt, "/intc",
+    platform_bus_add_all_fdt_nodes(machine->fdt, "/platic",
                                    VIRT_PLATFORM_BUS_BASEADDRESS,
                                    VIRT_PLATFORM_BUS_SIZE,
                                    VIRT_PLATFORM_BUS_IRQ);
@@ -967,7 +1004,6 @@ static void loongarch_init(MachineState *machine)
     lams->powerdown_notifier.notify = virt_powerdown_req;
     qemu_register_powerdown_notifier(&lams->powerdown_notifier);
 
-    fdt_add_pcie_node(lams);
     /*
      * Since lowmem region starts from 0 and Linux kernel legacy start address
      * at 2 MiB, FDT base address is located at 1 MiB to avoid NULL pointer
@@ -975,9 +1011,14 @@ static void loongarch_init(MachineState *machine)
      * Put the FDT into the memory map as a ROM image: this will ensure
      * the FDT is copied again upon reset, even if addr points into RAM.
      */
-    fdt_base = 1 * MiB;
     qemu_fdt_dumpdtb(machine->fdt, lams->fdt_size);
-    rom_add_blob_fixed("fdt", machine->fdt, lams->fdt_size, fdt_base);
+    rom_add_blob_fixed_as("fdt", machine->fdt, lams->fdt_size, FDT_BASE,
+                          &address_space_memory);
+    qemu_register_reset_nosnapshotload(qemu_fdt_randomize_seeds,
+            rom_ptr_for_as(&address_space_memory, FDT_BASE, lams->fdt_size));
+
+    lams->bootinfo.ram_size = ram_size;
+    loongarch_load_kernel(machine, &lams->bootinfo);
 }
 
 bool loongarch_is_acpi_enabled(LoongArchMachineState *lams)
diff --git a/include/hw/intc/loongarch_extioi.h b/include/hw/intc/loongarch_extioi.h
index a0a46b888c..410c6e1121 100644
--- a/include/hw/intc/loongarch_extioi.h
+++ b/include/hw/intc/loongarch_extioi.h
@@ -39,6 +39,7 @@
 #define EXTIOI_COREISR_END           (0xB20 - APIC_OFFSET)
 #define EXTIOI_COREMAP_START         (0xC00 - APIC_OFFSET)
 #define EXTIOI_COREMAP_END           (0xD00 - APIC_OFFSET)
+#define EXTIOI_SIZE                  0x800
 
 typedef struct ExtIOICore {
     uint32_t coreisr[EXTIOI_IRQS_GROUP_COUNT];
diff --git a/include/hw/loongarch/boot.h b/include/hw/loongarch/boot.h
new file mode 100644
index 0000000000..4ebcc89dcf
--- /dev/null
+++ b/include/hw/loongarch/boot.h
@@ -0,0 +1,109 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Definitions for LoongArch boot.
+ *
+ * Copyright (C) 2023 Loongson Technology Corporation Limited
+ */
+
+#ifndef HW_LOONGARCH_BOOT_H
+#define HW_LOONGARCH_BOOT_H
+
+/* UEFI 2.10 */
+#define EFI_SYSTEM_TABLE_SIGNATURE       0x5453595320494249
+#define EFI_2_100_SYSTEM_TABLE_REVISION  ((2<<16) | (100))
+#define EFI_SPECIFICATION_VERSION        EFI_SYSTEM_TABLE_REVISION
+#define EFI_SYSTEM_TABLE_REVISION        EFI_2_100_SYSTEM_TABLE_REVISION
+
+#define FW_VERSION 0x1
+#define FW_PATCHLEVEL 0x0
+
+typedef struct {
+    uint8_t b[16];
+} efi_guid_t QEMU_ALIGNED(8);
+
+#define EFI_GUID(a, b, c, d...) (efi_guid_t){ {                                \
+        (a) & 0xff, ((a) >> 8) & 0xff, ((a) >> 16) & 0xff, ((a) >> 24) & 0xff, \
+        (b) & 0xff, ((b) >> 8) & 0xff,                                         \
+        (c) & 0xff, ((c) >> 8) & 0xff, d } }
+
+#define LINUX_EFI_BOOT_MEMMAP_GUID \
+        EFI_GUID(0x800f683f, 0xd08b, 0x423a,  0xa2, 0x93, \
+                 0x96, 0x5c, 0x3c, 0x6f, 0xe2, 0xb4)
+
+#define LINUX_EFI_INITRD_MEDIA_GUID \
+        EFI_GUID(0x5568e427, 0x68fc, 0x4f3d,  0xac, 0x74, \
+                 0xca, 0x55, 0x52, 0x31, 0xcc, 0x68)
+
+#define DEVICE_TREE_GUID \
+        EFI_GUID(0xb1b621d5, 0xf19c, 0x41a5,  0x83, 0x0b, \
+                 0xd9, 0x15, 0x2c, 0x69, 0xaa, 0xe0)
+
+struct efi_config_table {
+    efi_guid_t guid;
+    uint64_t *ptr;
+    const char name[16];
+};
+
+typedef struct {
+    uint64_t signature;
+    uint32_t revision;
+    uint32_t headersize;
+    uint32_t crc32;
+    uint32_t reserved;
+} efi_table_hdr_t;
+
+struct efi_configuration_table {
+    efi_guid_t guid;
+    void *table;
+};
+
+struct efi_system_table {
+    efi_table_hdr_t hdr;
+    uint64_t fw_vendor;        /* physical addr of CHAR16 vendor string */
+    uint32_t fw_revision;
+    uint64_t con_in_handle;
+    uint64_t *con_in;
+    uint64_t con_out_handle;
+    uint64_t *con_out;
+    uint64_t stderr_handle;
+    uint64_t stderr_placeholder;
+    uint64_t *runtime;
+    uint64_t *boottime;
+    uint64_t nr_tables;
+    struct efi_configuration_table *tables;
+};
+
+typedef struct {
+    uint32_t type;
+    uint32_t pad;
+    uint64_t phys_addr;
+    uint64_t virt_addr;
+    uint64_t num_pages;
+    uint64_t attribute;
+} efi_memory_desc_t;
+
+struct efi_boot_memmap {
+    uint64_t map_size;
+    uint64_t desc_size;
+    uint32_t desc_ver;
+    uint64_t map_key;
+    uint64_t buff_size;
+    efi_memory_desc_t map[32];
+};
+
+struct efi_initrd {
+    uint64_t base;
+    uint64_t size;
+};
+
+struct loongarch_boot_info {
+    uint64_t ram_size;
+    const char *kernel_filename;
+    const char *kernel_cmdline;
+    const char *initrd_filename;
+    uint64_t a0, a1, a2;
+};
+
+void loongarch_load_kernel(MachineState *ms, struct loongarch_boot_info *info);
+
+#endif /* HW_LOONGARCH_BOOT_H */
diff --git a/include/hw/loongarch/virt.h b/include/hw/loongarch/virt.h
index 252f7df7f4..4e14bf6060 100644
--- a/include/hw/loongarch/virt.h
+++ b/include/hw/loongarch/virt.h
@@ -13,6 +13,7 @@
 #include "qemu/queue.h"
 #include "hw/intc/loongarch_ipi.h"
 #include "hw/block/flash.h"
+#include "hw/loongarch/boot.h"
 
 #define LOONGARCH_MAX_CPUS      256
 
@@ -32,6 +33,20 @@
 #define VIRT_GED_MEM_ADDR       (VIRT_GED_EVT_ADDR + ACPI_GED_EVT_SEL_LEN)
 #define VIRT_GED_REG_ADDR       (VIRT_GED_MEM_ADDR + MEMORY_HOTPLUG_IO_LEN)
 
+#define COMMAND_LINE_SIZE       512
+
+#define FDT_BASE                0x100000
+
+extern struct memmap_entry *memmap_table;
+extern unsigned memmap_entries;
+
+struct memmap_entry {
+    uint64_t address;
+    uint64_t length;
+    uint32_t type;
+    uint32_t reserved;
+};
+
 struct LoongArchMachineState {
     /*< private >*/
     MachineState parent_obj;
@@ -55,6 +70,7 @@ struct LoongArchMachineState {
     MemoryRegion system_iocsr;
     MemoryRegion iocsr_mem;
     AddressSpace as_iocsr;
+    struct loongarch_boot_info bootinfo;
 };
 
 #define TYPE_LOONGARCH_MACHINE  MACHINE_TYPE_NAME("virt")
diff --git a/include/hw/pci-host/ls7a.h b/include/hw/pci-host/ls7a.h
index e753449593..cd7c9ec7bc 100644
--- a/include/hw/pci-host/ls7a.h
+++ b/include/hw/pci-host/ls7a.h
@@ -24,6 +24,8 @@
 #define VIRT_PCH_REG_BASE        0x10000000UL
 #define VIRT_IOAPIC_REG_BASE     (VIRT_PCH_REG_BASE)
 #define VIRT_PCH_MSI_ADDR_LOW    0x2FF00000UL
+#define VIRT_PCH_REG_SIZE        0x400
+#define VIRT_PCH_MSI_SIZE        0x8
 
 /*
  * GSI_BASE is hard-coded with 64 in linux kernel, else kernel fails to boot
diff --git a/target/loongarch/cpu.h b/target/loongarch/cpu.h
index abb01b2cc7..c5722670f5 100644
--- a/target/loongarch/cpu.h
+++ b/target/loongarch/cpu.h
@@ -359,6 +359,8 @@ typedef struct CPUArchState {
     uint32_t mp_state;
     /* Store ipistate to access from this struct */
     DeviceState *ipistate;
+
+    struct loongarch_boot_info *boot_info;
 #endif
 } CPULoongArchState;