diff options
Diffstat (limited to 'hw/nios2/boot.c')
| -rw-r--r-- | hw/nios2/boot.c | 18 |
1 files changed, 12 insertions, 6 deletions
diff --git a/hw/nios2/boot.c b/hw/nios2/boot.c index 5f0ab2fbb9..276068c842 100644 --- a/hw/nios2/boot.c +++ b/hw/nios2/boot.c @@ -138,7 +138,6 @@ void nios2_load_kernel(Nios2CPU *cpu, hwaddr ddr_base, if (kernel_filename) { int kernel_size, fdt_size; uint64_t entry, low, high; - uint32_t base32; int big_endian = 0; #ifdef TARGET_WORDS_BIGENDIAN @@ -149,17 +148,24 @@ void nios2_load_kernel(Nios2CPU *cpu, hwaddr ddr_base, kernel_size = load_elf(kernel_filename, NULL, NULL, NULL, &entry, &low, &high, big_endian, EM_ALTERA_NIOS2, 0, 0); - base32 = entry; - if (base32 == 0xc0000000) { + if ((uint32_t)entry == 0xc0000000) { + /* + * The Nios II processor reference guide documents that the + * kernel is placed at virtual memory address 0xc0000000, + * and we've got something that points there. Reload it + * and adjust the entry to get the address in physical RAM. + */ kernel_size = load_elf(kernel_filename, NULL, translate_kernel_address, NULL, &entry, NULL, NULL, big_endian, EM_ALTERA_NIOS2, 0, 0); + boot_info.bootstrap_pc = ddr_base + 0xc0000000 + + (entry & 0x07ffffff); + } else { + /* Use the entry point in the ELF image. */ + boot_info.bootstrap_pc = (uint32_t)entry; } - /* Always boot into physical ram. */ - boot_info.bootstrap_pc = ddr_base + 0xc0000000 + (entry & 0x07ffffff); - /* If it wasn't an ELF image, try an u-boot image. */ if (kernel_size < 0) { hwaddr uentry, loadaddr = LOAD_UIMAGE_LOADADDR_INVALID; |