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hw/riscv: Load the kernel after the firmware

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Instead of loading the kernel at a hardcoded start address, let's load
the kernel at the next aligned address after the end of the firmware.

This should have no impact for current users of OpenSBI, but will
allow loading a noMMU kernel at the start of memory.

Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Palmer Dabbelt <palmerdabbelt@google.com>
Reviewed-by: Bin Meng <bin.meng@windriver.com>
Tested-by: Bin Meng <bin.meng@windriver.com>
Message-id: 46c00c4f15b42feb792090e3d74359e180a6d954.1602634524.git.alistair.francis@wdc.com
This commit is contained in:
Alistair Francis 2020-10-13 17:17:33 -07:00
parent c407784291
commit 38bc4e34f2
7 changed files with 45 additions and 15 deletions
Download patch file Download diff file Expand all files Collapse all files

3
include/hw/riscv/boot.h
View file

@ -25,6 +25,8 @@
bool riscv_is_32_bit(MachineState *machine);
target_ulong riscv_calc_kernel_start_addr(MachineState *machine,
target_ulong firmware_end_addr);
target_ulong riscv_find_and_load_firmware(MachineState *machine,
const char *default_machine_firmware,
hwaddr firmware_load_addr,
@ -34,6 +36,7 @@ target_ulong riscv_load_firmware(const char *firmware_filename,
hwaddr firmware_load_addr,
symbol_fn_t sym_cb);
target_ulong riscv_load_kernel(const char *kernel_filename,
target_ulong firmware_end_addr,
symbol_fn_t sym_cb);
hwaddr riscv_load_initrd(const char *filename, uint64_t mem_size,
uint64_t kernel_entry, hwaddr *start);