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[59.124.168.89]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-21177dc7cf8sm4995665ad.34.2024.11.06.22.31.42 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 06 Nov 2024 22:31:43 -0800 (PST) From: Jim Shu To: qemu-devel@nongnu.org, qemu-riscv@nongnu.org Cc: Palmer Dabbelt , Alistair Francis , Bin Meng , Weiwei Li , Daniel Henrique Barboza , Liu Zhiwei , Jim Shu Subject: [PATCH v2 2/3] hw/riscv: Add a new struct RISCVBootInfo Date: Thu, 7 Nov 2024 14:31:32 +0800 Message-Id: <20241107063133.28339-3-jim.shu@sifive.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20241107063133.28339-1-jim.shu@sifive.com> References: <20241107063133.28339-1-jim.shu@sifive.com> Received-SPF: pass client-ip=2607:f8b0:4864:20::1033; envelope-from=jim.shu@sifive.com; helo=mail-pj1-x1033.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Add a new struct RISCVBootInfo to sync boot information between multiple boot functions. Signed-off-by: Jim Shu --- hw/riscv/boot.c | 66 ++++++++++++++++++------------ hw/riscv/microchip_pfsoc.c | 11 ++--- hw/riscv/opentitan.c | 4 +- hw/riscv/sifive_e.c | 4 +- hw/riscv/sifive_u.c | 12 +++--- hw/riscv/spike.c | 12 +++--- hw/riscv/virt.c | 13 +++--- include/hw/riscv/boot.h | 25 +++++++---- include/hw/riscv/microchip_pfsoc.h | 2 + include/hw/riscv/opentitan.h | 2 + include/hw/riscv/sifive_e.h | 2 + include/hw/riscv/sifive_u.h | 2 + include/hw/riscv/spike.h | 2 + include/hw/riscv/virt.h | 2 + 14 files changed, 97 insertions(+), 62 deletions(-) diff --git a/hw/riscv/boot.c b/hw/riscv/boot.c index 4e4e106a2b..e5bd54bd73 100644 --- a/hw/riscv/boot.c +++ b/hw/riscv/boot.c @@ -67,9 +67,16 @@ char *riscv_plic_hart_config_string(int hart_count) return g_strjoinv(",", (char **)vals); } -target_ulong riscv_calc_kernel_start_addr(RISCVHartArrayState *harts, +void riscv_boot_info_init(RISCVBootInfo *info, RISCVHartArrayState *harts) +{ + info->kernel_size = 0; + info->initrd_size = 0; + info->is_32bit = riscv_is_32bit(harts); +} + +target_ulong riscv_calc_kernel_start_addr(RISCVBootInfo *info, target_ulong firmware_end_addr) { - if (riscv_is_32bit(harts)) { + if (info->is_32bit) { return QEMU_ALIGN_UP(firmware_end_addr, 4 * MiB); } else { return QEMU_ALIGN_UP(firmware_end_addr, 2 * MiB); @@ -175,7 +182,7 @@ target_ulong riscv_load_firmware(const char *firmware_filename, exit(1); } -static void riscv_load_initrd(MachineState *machine, uint64_t kernel_entry) +static void riscv_load_initrd(MachineState *machine, RISCVBootInfo *info) { const char *filename = machine->initrd_filename; uint64_t mem_size = machine->ram_size; @@ -196,7 +203,7 @@ static void riscv_load_initrd(MachineState *machine, uint64_t kernel_entry) * halfway into RAM, and for boards with 1GB of RAM or more we put * the initrd at 512MB. */ - start = kernel_entry + MIN(mem_size / 2, 512 * MiB); + start = info->image_low_addr + MIN(mem_size / 2, 512 * MiB); size = load_ramdisk(filename, start, mem_size - start); if (size == -1) { @@ -215,14 +222,14 @@ static void riscv_load_initrd(MachineState *machine, uint64_t kernel_entry) } } -target_ulong riscv_load_kernel(MachineState *machine, - RISCVHartArrayState *harts, - target_ulong kernel_start_addr, - bool load_initrd, - symbol_fn_t sym_cb) +void riscv_load_kernel(MachineState *machine, + RISCVBootInfo *info, + target_ulong kernel_start_addr, + bool load_initrd, + symbol_fn_t sym_cb) { const char *kernel_filename = machine->kernel_filename; - uint64_t kernel_load_base, kernel_entry; + ssize_t kernel_size; void *fdt = machine->fdt; g_assert(kernel_filename != NULL); @@ -234,21 +241,28 @@ target_ulong riscv_load_kernel(MachineState *machine, * the (expected) load address load address. This allows kernels to have * separate SBI and ELF entry points (used by FreeBSD, for example). */ - if (load_elf_ram_sym(kernel_filename, NULL, NULL, NULL, - NULL, &kernel_load_base, NULL, NULL, 0, - EM_RISCV, 1, 0, NULL, true, sym_cb) > 0) { - kernel_entry = kernel_load_base; + kernel_size = load_elf_ram_sym(kernel_filename, NULL, NULL, NULL, NULL, + &info->image_low_addr, &info->image_high_addr, + NULL, 0, EM_RISCV, 1, 0, NULL, true, sym_cb); + if (kernel_size > 0) { + info->kernel_size = kernel_size; goto out; } - if (load_uimage_as(kernel_filename, &kernel_entry, NULL, NULL, - NULL, NULL, NULL) > 0) { + kernel_size = load_uimage_as(kernel_filename, &info->image_low_addr, + NULL, NULL, NULL, NULL, NULL); + if (kernel_size > 0) { + info->kernel_size = kernel_size; + info->image_high_addr = info->image_low_addr + kernel_size; goto out; } - if (load_image_targphys_as(kernel_filename, kernel_start_addr, - current_machine->ram_size, NULL) > 0) { - kernel_entry = kernel_start_addr; + kernel_size = load_image_targphys_as(kernel_filename, kernel_start_addr, + current_machine->ram_size, NULL); + if (kernel_size > 0) { + info->kernel_size = kernel_size; + info->image_low_addr = kernel_start_addr; + info->image_high_addr = info->image_low_addr + kernel_size; goto out; } @@ -257,23 +271,21 @@ target_ulong riscv_load_kernel(MachineState *machine, out: /* - * For 32 bit CPUs 'kernel_entry' can be sign-extended by + * For 32 bit CPUs 'image_low_addr' can be sign-extended by * load_elf_ram_sym(). */ - if (riscv_is_32bit(harts)) { - kernel_entry = extract64(kernel_entry, 0, 32); + if (info->is_32bit) { + info->image_low_addr = extract64(info->image_low_addr, 0, 32); } if (load_initrd && machine->initrd_filename) { - riscv_load_initrd(machine, kernel_entry); + riscv_load_initrd(machine, info); } if (fdt && machine->kernel_cmdline && *machine->kernel_cmdline) { qemu_fdt_setprop_string(fdt, "/chosen", "bootargs", machine->kernel_cmdline); } - - return kernel_entry; } /* @@ -293,7 +305,7 @@ out: * The FDT is fdt_packed() during the calculation. */ uint64_t riscv_compute_fdt_addr(hwaddr dram_base, hwaddr dram_size, - MachineState *ms, RISCVHartArrayState *harts) + MachineState *ms, RISCVBootInfo *info) { int ret = fdt_pack(ms->fdt); hwaddr dram_end, temp; @@ -321,7 +333,7 @@ uint64_t riscv_compute_fdt_addr(hwaddr dram_base, hwaddr dram_size, * Thus, put it at an 2MB aligned address that less than fdt size from the * end of dram or 3GB whichever is lesser. */ - if (!riscv_is_32bit(harts)) { + if (!info->is_32bit) { temp = dram_end; } else { temp = (dram_base < 3072 * MiB) ? MIN(dram_end, 3072 * MiB) : dram_end; diff --git a/hw/riscv/microchip_pfsoc.c b/hw/riscv/microchip_pfsoc.c index ba8b0a2c26..1fade7988a 100644 --- a/hw/riscv/microchip_pfsoc.c +++ b/hw/riscv/microchip_pfsoc.c @@ -46,7 +46,6 @@ #include "hw/cpu/cluster.h" #include "target/riscv/cpu.h" #include "hw/misc/unimp.h" -#include "hw/riscv/boot.h" #include "hw/riscv/riscv_hart.h" #include "hw/riscv/microchip_pfsoc.h" #include "hw/intc/riscv_aclint.h" @@ -615,17 +614,19 @@ static void microchip_icicle_kit_machine_init(MachineState *machine) firmware_end_addr = riscv_find_and_load_firmware(machine, firmware_name, &firmware_load_addr, NULL); + riscv_boot_info_init(&s->soc.boot_info, &s->soc.u_cpus); if (kernel_as_payload) { - kernel_start_addr = riscv_calc_kernel_start_addr(&s->soc.u_cpus, + kernel_start_addr = riscv_calc_kernel_start_addr(&s->soc.boot_info, firmware_end_addr); - kernel_entry = riscv_load_kernel(machine, &s->soc.u_cpus, - kernel_start_addr, true, NULL); + riscv_load_kernel(machine, &s->soc.boot_info, kernel_start_addr, + true, NULL); + kernel_entry = s->soc.boot_info.image_low_addr; /* Compute the fdt load address in dram */ fdt_load_addr = riscv_compute_fdt_addr(memmap[MICROCHIP_PFSOC_DRAM_LO].base, memmap[MICROCHIP_PFSOC_DRAM_LO].size, - machine, &s->soc.u_cpus); + machine, &s->soc.boot_info); riscv_load_fdt(fdt_load_addr, machine->fdt); /* Load the reset vector */ diff --git a/hw/riscv/opentitan.c b/hw/riscv/opentitan.c index e2830e9dc2..8478807f09 100644 --- a/hw/riscv/opentitan.c +++ b/hw/riscv/opentitan.c @@ -25,7 +25,6 @@ #include "qemu/error-report.h" #include "hw/boards.h" #include "hw/misc/unimp.h" -#include "hw/riscv/boot.h" #include "qemu/units.h" #include "sysemu/sysemu.h" @@ -102,8 +101,9 @@ static void opentitan_machine_init(MachineState *machine) riscv_load_firmware(machine->firmware, &firmware_load_addr, NULL); } + riscv_boot_info_init(&s->soc.boot_info, &s->soc.cpus); if (machine->kernel_filename) { - riscv_load_kernel(machine, &s->soc.cpus, + riscv_load_kernel(machine, &s->soc.boot_info, memmap[IBEX_DEV_RAM].base, false, NULL); } diff --git a/hw/riscv/sifive_e.c b/hw/riscv/sifive_e.c index 5a1959f2a9..fbc330ef51 100644 --- a/hw/riscv/sifive_e.c +++ b/hw/riscv/sifive_e.c @@ -39,7 +39,6 @@ #include "target/riscv/cpu.h" #include "hw/riscv/riscv_hart.h" #include "hw/riscv/sifive_e.h" -#include "hw/riscv/boot.h" #include "hw/char/sifive_uart.h" #include "hw/intc/riscv_aclint.h" #include "hw/intc/sifive_plic.h" @@ -113,8 +112,9 @@ static void sifive_e_machine_init(MachineState *machine) rom_add_blob_fixed_as("mrom.reset", reset_vec, sizeof(reset_vec), memmap[SIFIVE_E_DEV_MROM].base, &address_space_memory); + riscv_boot_info_init(&s->soc.boot_info, &s->soc.cpus); if (machine->kernel_filename) { - riscv_load_kernel(machine, &s->soc.cpus, + riscv_load_kernel(machine, &s->soc.boot_info, memmap[SIFIVE_E_DEV_DTIM].base, false, NULL); } diff --git a/hw/riscv/sifive_u.c b/hw/riscv/sifive_u.c index 05467e833a..c7fe2eaba0 100644 --- a/hw/riscv/sifive_u.c +++ b/hw/riscv/sifive_u.c @@ -50,7 +50,6 @@ #include "target/riscv/cpu.h" #include "hw/riscv/riscv_hart.h" #include "hw/riscv/sifive_u.h" -#include "hw/riscv/boot.h" #include "hw/char/sifive_uart.h" #include "hw/intc/riscv_aclint.h" #include "hw/intc/sifive_plic.h" @@ -590,12 +589,13 @@ static void sifive_u_machine_init(MachineState *machine) firmware_end_addr = riscv_find_and_load_firmware(machine, firmware_name, &start_addr, NULL); + riscv_boot_info_init(&s->soc.boot_info, &s->soc.u_cpus); if (machine->kernel_filename) { - kernel_start_addr = riscv_calc_kernel_start_addr(&s->soc.u_cpus, + kernel_start_addr = riscv_calc_kernel_start_addr(&s->soc.boot_info, firmware_end_addr); - - kernel_entry = riscv_load_kernel(machine, &s->soc.u_cpus, - kernel_start_addr, true, NULL); + riscv_load_kernel(machine, &s->soc.boot_info, kernel_start_addr, + true, NULL); + kernel_entry = s->soc.boot_info.image_low_addr; } else { /* * If dynamic firmware is used, it doesn't know where is the next mode @@ -606,7 +606,7 @@ static void sifive_u_machine_init(MachineState *machine) fdt_load_addr = riscv_compute_fdt_addr(memmap[SIFIVE_U_DEV_DRAM].base, memmap[SIFIVE_U_DEV_DRAM].size, - machine, &s->soc.u_cpus); + machine, &s->soc.boot_info); riscv_load_fdt(fdt_load_addr, machine->fdt); if (!riscv_is_32bit(&s->soc.u_cpus)) { diff --git a/hw/riscv/spike.c b/hw/riscv/spike.c index acd7ab1ae1..9bd4c23c53 100644 --- a/hw/riscv/spike.c +++ b/hw/riscv/spike.c @@ -31,7 +31,6 @@ #include "target/riscv/cpu.h" #include "hw/riscv/riscv_hart.h" #include "hw/riscv/spike.h" -#include "hw/riscv/boot.h" #include "hw/riscv/numa.h" #include "hw/char/riscv_htif.h" #include "hw/intc/riscv_aclint.h" @@ -300,13 +299,14 @@ static void spike_board_init(MachineState *machine) create_fdt(s, memmap, riscv_is_32bit(&s->soc[0]), htif_custom_base); /* Load kernel */ + riscv_boot_info_init(&s->boot_info, &s->soc[0]); if (machine->kernel_filename) { - kernel_start_addr = riscv_calc_kernel_start_addr(&s->soc[0], + kernel_start_addr = riscv_calc_kernel_start_addr(&s->boot_info, firmware_end_addr); - kernel_entry = riscv_load_kernel(machine, &s->soc[0], - kernel_start_addr, - true, htif_symbol_callback); + riscv_load_kernel(machine, &s->boot_info, kernel_start_addr, + true, htif_symbol_callback); + kernel_entry = s->boot_info.image_low_addr; } else { /* * If dynamic firmware is used, it doesn't know where is the next mode @@ -317,7 +317,7 @@ static void spike_board_init(MachineState *machine) fdt_load_addr = riscv_compute_fdt_addr(memmap[SPIKE_DRAM].base, memmap[SPIKE_DRAM].size, - machine, &s->soc[0]); + machine, &s->boot_info); riscv_load_fdt(fdt_load_addr, machine->fdt); /* load the reset vector */ diff --git a/hw/riscv/virt.c b/hw/riscv/virt.c index 761bce3304..40d2f8f8de 100644 --- a/hw/riscv/virt.c +++ b/hw/riscv/virt.c @@ -34,7 +34,6 @@ #include "hw/riscv/riscv_hart.h" #include "hw/riscv/iommu.h" #include "hw/riscv/virt.h" -#include "hw/riscv/boot.h" #include "hw/riscv/numa.h" #include "kvm/kvm_riscv.h" #include "hw/firmware/smbios.h" @@ -1414,17 +1413,19 @@ static void virt_machine_done(Notifier *notifier, void *data) } } + riscv_boot_info_init(&s->boot_info, &s->soc[0]); + if (machine->kernel_filename && !kernel_entry) { - kernel_start_addr = riscv_calc_kernel_start_addr(&s->soc[0], + kernel_start_addr = riscv_calc_kernel_start_addr(&s->boot_info, firmware_end_addr); - - kernel_entry = riscv_load_kernel(machine, &s->soc[0], - kernel_start_addr, true, NULL); + riscv_load_kernel(machine, &s->boot_info, kernel_start_addr, + true, NULL); + kernel_entry = s->boot_info.image_low_addr; } fdt_load_addr = riscv_compute_fdt_addr(memmap[VIRT_DRAM].base, memmap[VIRT_DRAM].size, - machine, &s->soc[0]); + machine, &s->boot_info); riscv_load_fdt(fdt_load_addr, machine->fdt); /* load the reset vector */ diff --git a/include/hw/riscv/boot.h b/include/hw/riscv/boot.h index 34a80c5ff4..719ee1fe5f 100644 --- a/include/hw/riscv/boot.h +++ b/include/hw/riscv/boot.h @@ -27,11 +27,20 @@ #define RISCV32_BIOS_BIN "opensbi-riscv32-generic-fw_dynamic.bin" #define RISCV64_BIOS_BIN "opensbi-riscv64-generic-fw_dynamic.bin" +typedef struct RISCVBootInfo { + ssize_t kernel_size; + uint64_t image_low_addr; + uint64_t image_high_addr; + + bool is_32bit; +} RISCVBootInfo; + bool riscv_is_32bit(RISCVHartArrayState *harts); char *riscv_plic_hart_config_string(int hart_count); -target_ulong riscv_calc_kernel_start_addr(RISCVHartArrayState *harts, +void riscv_boot_info_init(RISCVBootInfo *info, RISCVHartArrayState *harts); +target_ulong riscv_calc_kernel_start_addr(RISCVBootInfo *info, target_ulong firmware_end_addr); target_ulong riscv_find_and_load_firmware(MachineState *machine, const char *default_machine_firmware, @@ -43,13 +52,13 @@ char *riscv_find_firmware(const char *firmware_filename, target_ulong riscv_load_firmware(const char *firmware_filename, hwaddr *firmware_load_addr, symbol_fn_t sym_cb); -target_ulong riscv_load_kernel(MachineState *machine, - RISCVHartArrayState *harts, - target_ulong firmware_end_addr, - bool load_initrd, - symbol_fn_t sym_cb); -uint64_t riscv_compute_fdt_addr(hwaddr dram_start, uint64_t dram_size, - MachineState *ms, RISCVHartArrayState *harts); +void riscv_load_kernel(MachineState *machine, + RISCVBootInfo *info, + target_ulong kernel_start_addr, + bool load_initrd, + symbol_fn_t sym_cb); +uint64_t riscv_compute_fdt_addr(hwaddr dram_base, hwaddr dram_size, + MachineState *ms, RISCVBootInfo *info); void riscv_load_fdt(hwaddr fdt_addr, void *fdt); void riscv_setup_rom_reset_vec(MachineState *machine, RISCVHartArrayState *harts, hwaddr saddr, diff --git a/include/hw/riscv/microchip_pfsoc.h b/include/hw/riscv/microchip_pfsoc.h index daef086da6..2b774ff977 100644 --- a/include/hw/riscv/microchip_pfsoc.h +++ b/include/hw/riscv/microchip_pfsoc.h @@ -32,6 +32,7 @@ #include "hw/net/cadence_gem.h" #include "hw/sd/cadence_sdhci.h" #include "hw/riscv/riscv_hart.h" +#include "hw/riscv/boot.h" typedef struct MicrochipPFSoCState { /*< private >*/ @@ -56,6 +57,7 @@ typedef struct MicrochipPFSoCState { CadenceGEMState gem0; CadenceGEMState gem1; CadenceSDHCIState sdhci; + RISCVBootInfo boot_info; } MicrochipPFSoCState; #define TYPE_MICROCHIP_PFSOC "microchip.pfsoc" diff --git a/include/hw/riscv/opentitan.h b/include/hw/riscv/opentitan.h index 609473d07b..f9bc4b2f82 100644 --- a/include/hw/riscv/opentitan.h +++ b/include/hw/riscv/opentitan.h @@ -26,6 +26,7 @@ #include "hw/ssi/ibex_spi_host.h" #include "hw/boards.h" #include "qom/object.h" +#include "hw/riscv/boot.h" #define TYPE_RISCV_IBEX_SOC "riscv.lowrisc.ibex.soc" OBJECT_DECLARE_SIMPLE_TYPE(LowRISCIbexSoCState, RISCV_IBEX_SOC) @@ -46,6 +47,7 @@ struct LowRISCIbexSoCState { IbexUartState uart; IbexTimerState timer; IbexSPIHostState spi_host[OPENTITAN_NUM_SPI_HOSTS]; + RISCVBootInfo boot_info; uint32_t resetvec; diff --git a/include/hw/riscv/sifive_e.h b/include/hw/riscv/sifive_e.h index 31180a680e..d2b7f16ad1 100644 --- a/include/hw/riscv/sifive_e.h +++ b/include/hw/riscv/sifive_e.h @@ -24,6 +24,7 @@ #include "hw/gpio/sifive_gpio.h" #include "hw/misc/sifive_e_aon.h" #include "hw/boards.h" +#include "hw/riscv/boot.h" #define TYPE_RISCV_E_SOC "riscv.sifive.e.soc" #define RISCV_E_SOC(obj) \ @@ -40,6 +41,7 @@ typedef struct SiFiveESoCState { SIFIVEGPIOState gpio; MemoryRegion xip_mem; MemoryRegion mask_rom; + RISCVBootInfo boot_info; } SiFiveESoCState; typedef struct SiFiveEState { diff --git a/include/hw/riscv/sifive_u.h b/include/hw/riscv/sifive_u.h index 0696f85942..2a183df89b 100644 --- a/include/hw/riscv/sifive_u.h +++ b/include/hw/riscv/sifive_u.h @@ -30,6 +30,7 @@ #include "hw/misc/sifive_u_prci.h" #include "hw/ssi/sifive_spi.h" #include "hw/timer/sifive_pwm.h" +#include "hw/riscv/boot.h" #define TYPE_RISCV_U_SOC "riscv.sifive.u.soc" #define RISCV_U_SOC(obj) \ @@ -53,6 +54,7 @@ typedef struct SiFiveUSoCState { SiFiveSPIState spi2; CadenceGEMState gem; SiFivePwmState pwm[2]; + RISCVBootInfo boot_info; uint32_t serial; char *cpu_type; diff --git a/include/hw/riscv/spike.h b/include/hw/riscv/spike.h index 0c2a223763..f37b7e0381 100644 --- a/include/hw/riscv/spike.h +++ b/include/hw/riscv/spike.h @@ -22,6 +22,7 @@ #include "hw/boards.h" #include "hw/riscv/riscv_hart.h" #include "hw/sysbus.h" +#include "hw/riscv/boot.h" #define SPIKE_CPUS_MAX 8 #define SPIKE_SOCKETS_MAX 8 @@ -37,6 +38,7 @@ struct SpikeState { /*< public >*/ RISCVHartArrayState soc[SPIKE_SOCKETS_MAX]; + RISCVBootInfo boot_info; }; enum { diff --git a/include/hw/riscv/virt.h b/include/hw/riscv/virt.h index c0dc41ff9a..82a485145f 100644 --- a/include/hw/riscv/virt.h +++ b/include/hw/riscv/virt.h @@ -24,6 +24,7 @@ #include "hw/sysbus.h" #include "hw/block/flash.h" #include "hw/intc/riscv_imsic.h" +#include "hw/riscv/boot.h" #define VIRT_CPUS_MAX_BITS 9 #define VIRT_CPUS_MAX (1 << VIRT_CPUS_MAX_BITS) @@ -52,6 +53,7 @@ struct RISCVVirtState { DeviceState *irqchip[VIRT_SOCKETS_MAX]; PFlashCFI01 *flash[2]; FWCfgState *fw_cfg; + RISCVBootInfo boot_info; int fdt_size; bool have_aclint;