diff options
Diffstat (limited to 'hw/riscv/boot.c')
| -rw-r--r-- | hw/riscv/boot.c | 159 |
1 files changed, 104 insertions, 55 deletions
diff --git a/hw/riscv/boot.c b/hw/riscv/boot.c index 47281ca..828a867 100644 --- a/hw/riscv/boot.c +++ b/hw/riscv/boot.c @@ -27,17 +27,17 @@ #include "hw/riscv/boot.h" #include "hw/riscv/boot_opensbi.h" #include "elf.h" -#include "sysemu/device_tree.h" -#include "sysemu/qtest.h" -#include "sysemu/kvm.h" -#include "sysemu/reset.h" +#include "system/device_tree.h" +#include "system/qtest.h" +#include "system/kvm.h" +#include "system/reset.h" #include <libfdt.h> bool riscv_is_32bit(RISCVHartArrayState *harts) { RISCVCPUClass *mcc = RISCV_CPU_GET_CLASS(&harts->harts[0]); - return mcc->misa_mxl_max == MXL_RV32; + return mcc->def->misa_mxl_max == MXL_RV32; } /* @@ -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); @@ -128,11 +135,11 @@ char *riscv_find_firmware(const char *firmware_filename, target_ulong riscv_find_and_load_firmware(MachineState *machine, const char *default_machine_firmware, - hwaddr firmware_load_addr, + hwaddr *firmware_load_addr, symbol_fn_t sym_cb) { char *firmware_filename; - target_ulong firmware_end_addr = firmware_load_addr; + target_ulong firmware_end_addr = *firmware_load_addr; firmware_filename = riscv_find_firmware(machine->firmware, default_machine_firmware); @@ -148,7 +155,7 @@ target_ulong riscv_find_and_load_firmware(MachineState *machine, } target_ulong riscv_load_firmware(const char *firmware_filename, - hwaddr firmware_load_addr, + hwaddr *firmware_load_addr, symbol_fn_t sym_cb) { uint64_t firmware_entry, firmware_end; @@ -159,22 +166,23 @@ target_ulong riscv_load_firmware(const char *firmware_filename, if (load_elf_ram_sym(firmware_filename, NULL, NULL, NULL, &firmware_entry, NULL, &firmware_end, NULL, 0, EM_RISCV, 1, 0, NULL, true, sym_cb) > 0) { + *firmware_load_addr = firmware_entry; return firmware_end; } firmware_size = load_image_targphys_as(firmware_filename, - firmware_load_addr, + *firmware_load_addr, current_machine->ram_size, NULL); if (firmware_size > 0) { - return firmware_load_addr + firmware_size; + return *firmware_load_addr + firmware_size; } error_report("could not load firmware '%s'", 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; @@ -195,7 +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) { @@ -206,6 +214,9 @@ static void riscv_load_initrd(MachineState *machine, uint64_t kernel_entry) } } + info->initrd_start = start; + info->initrd_size = size; + /* Some RISC-V machines (e.g. opentitan) don't have a fdt. */ if (fdt) { end = start + size; @@ -214,14 +225,14 @@ 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); @@ -233,21 +244,29 @@ 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, ELFDATA2LSB, 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; } @@ -256,23 +275,21 @@ 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; } /* @@ -292,11 +309,12 @@ out: * The FDT is fdt_packed() during the calculation. */ uint64_t riscv_compute_fdt_addr(hwaddr dram_base, hwaddr dram_size, - MachineState *ms) + MachineState *ms, RISCVBootInfo *info) { int ret = fdt_pack(ms->fdt); hwaddr dram_end, temp; int fdtsize; + uint64_t dtb_start, dtb_start_limit; /* Should only fail if we've built a corrupted tree */ g_assert(ret == 0); @@ -307,6 +325,17 @@ uint64_t riscv_compute_fdt_addr(hwaddr dram_base, hwaddr dram_size, exit(1); } + if (info->initrd_size) { + /* If initrd is successfully loaded, place DTB after it. */ + dtb_start_limit = info->initrd_start + info->initrd_size; + } else if (info->kernel_size) { + /* If only kernel is successfully loaded, place DTB after it. */ + dtb_start_limit = info->image_high_addr; + } else { + /* Otherwise, do not check DTB overlapping */ + dtb_start_limit = 0; + } + /* * A dram_size == 0, usually from a MemMapEntry[].size element, * means that the DRAM block goes all the way to ms->ram_size. @@ -316,13 +345,24 @@ uint64_t riscv_compute_fdt_addr(hwaddr dram_base, hwaddr dram_size, /* * We should put fdt as far as possible to avoid kernel/initrd overwriting - * its content. But it should be addressable by 32 bit system as well. - * Thus, put it at an 2MB aligned address that less than fdt size from the - * end of dram or 3GB whichever is lesser. + * its content. But it should be addressable by 32 bit system as well in RV32. + * Thus, put it near to the end of dram in RV64, and put it near to the end + * of dram or 3GB whichever is lesser in RV32. */ - temp = (dram_base < 3072 * MiB) ? MIN(dram_end, 3072 * MiB) : dram_end; + if (!info->is_32bit) { + temp = dram_end; + } else { + temp = (dram_base < 3072 * MiB) ? MIN(dram_end, 3072 * MiB) : dram_end; + } - return QEMU_ALIGN_DOWN(temp - fdtsize, 2 * MiB); + dtb_start = QEMU_ALIGN_DOWN(temp - fdtsize, 2 * MiB); + + if (dtb_start_limit && (dtb_start < dtb_start_limit)) { + error_report("No enough memory to place DTB after kernel/initrd"); + exit(1); + } + + return dtb_start; } /* @@ -334,35 +374,39 @@ void riscv_load_fdt(hwaddr fdt_addr, void *fdt) uint32_t fdtsize = fdt_totalsize(fdt); /* copy in the device tree */ - qemu_fdt_dumpdtb(fdt, fdtsize); - rom_add_blob_fixed_as("fdt", fdt, fdtsize, fdt_addr, &address_space_memory); qemu_register_reset_nosnapshotload(qemu_fdt_randomize_seeds, rom_ptr_for_as(&address_space_memory, fdt_addr, fdtsize)); } -void riscv_rom_copy_firmware_info(MachineState *machine, hwaddr rom_base, - hwaddr rom_size, uint32_t reset_vec_size, +void riscv_rom_copy_firmware_info(MachineState *machine, + RISCVHartArrayState *harts, + hwaddr rom_base, hwaddr rom_size, + uint32_t reset_vec_size, uint64_t kernel_entry) { + struct fw_dynamic_info32 dinfo32; struct fw_dynamic_info dinfo; size_t dinfo_len; - if (sizeof(dinfo.magic) == 4) { - dinfo.magic = cpu_to_le32(FW_DYNAMIC_INFO_MAGIC_VALUE); - dinfo.version = cpu_to_le32(FW_DYNAMIC_INFO_VERSION); - dinfo.next_mode = cpu_to_le32(FW_DYNAMIC_INFO_NEXT_MODE_S); - dinfo.next_addr = cpu_to_le32(kernel_entry); + if (riscv_is_32bit(harts)) { + dinfo32.magic = cpu_to_le32(FW_DYNAMIC_INFO_MAGIC_VALUE); + dinfo32.version = cpu_to_le32(FW_DYNAMIC_INFO_VERSION); + dinfo32.next_mode = cpu_to_le32(FW_DYNAMIC_INFO_NEXT_MODE_S); + dinfo32.next_addr = cpu_to_le32(kernel_entry); + dinfo32.options = 0; + dinfo32.boot_hart = 0; + dinfo_len = sizeof(dinfo32); } else { dinfo.magic = cpu_to_le64(FW_DYNAMIC_INFO_MAGIC_VALUE); dinfo.version = cpu_to_le64(FW_DYNAMIC_INFO_VERSION); dinfo.next_mode = cpu_to_le64(FW_DYNAMIC_INFO_NEXT_MODE_S); dinfo.next_addr = cpu_to_le64(kernel_entry); + dinfo.options = 0; + dinfo.boot_hart = 0; + dinfo_len = sizeof(dinfo); } - dinfo.options = 0; - dinfo.boot_hart = 0; - dinfo_len = sizeof(dinfo); /** * copy the dynamic firmware info. This information is specific to @@ -374,7 +418,10 @@ void riscv_rom_copy_firmware_info(MachineState *machine, hwaddr rom_base, exit(1); } - rom_add_blob_fixed_as("mrom.finfo", &dinfo, dinfo_len, + rom_add_blob_fixed_as("mrom.finfo", + riscv_is_32bit(harts) ? + (void *)&dinfo32 : (void *)&dinfo, + dinfo_len, rom_base + reset_vec_size, &address_space_memory); } @@ -430,7 +477,9 @@ void riscv_setup_rom_reset_vec(MachineState *machine, RISCVHartArrayState *harts } rom_add_blob_fixed_as("mrom.reset", reset_vec, sizeof(reset_vec), rom_base, &address_space_memory); - riscv_rom_copy_firmware_info(machine, rom_base, rom_size, sizeof(reset_vec), + riscv_rom_copy_firmware_info(machine, harts, + rom_base, rom_size, + sizeof(reset_vec), kernel_entry); } |