diff options
Diffstat (limited to 'cmd/bootefi.c')
| -rw-r--r-- | cmd/bootefi.c | 29 |
1 files changed, 17 insertions, 12 deletions
diff --git a/cmd/bootefi.c b/cmd/bootefi.c index a57b0b4fe4..ad97a9c019 100644 --- a/cmd/bootefi.c +++ b/cmd/bootefi.c @@ -148,15 +148,16 @@ static void set_load_options(struct efi_loaded_image *loaded_image_info, /** * copy_fdt() - Copy the device tree to a new location available to EFI * - * The FDT is relocated into a suitable location within the EFI memory map. + * The FDT is copied to a suitable location within the EFI memory map. * Additional 12 KiB are added to the space in case the device tree needs to be * expanded later with fdt_open_into(). * - * @fdt_addr: On entry, address of start of FDT. On exit, address of relocated + * @fdtp: On entry a pointer to the flattened device tree. + * On exit a pointer to the copy of the flattened device tree. * FDT start * Return: status code */ -static efi_status_t copy_fdt(ulong *fdt_addrp) +static efi_status_t copy_fdt(void **fdtp) { unsigned long fdt_ram_start = -1L, fdt_pages; efi_status_t ret = 0; @@ -180,12 +181,16 @@ static efi_status_t copy_fdt(ulong *fdt_addrp) * Give us at least 12 KiB of breathing room in case the device tree * needs to be expanded later. */ - fdt = map_sysmem(*fdt_addrp, 0); + fdt = *fdtp; fdt_pages = efi_size_in_pages(fdt_totalsize(fdt) + 0x3000); fdt_size = fdt_pages << EFI_PAGE_SHIFT; - /* Safe fdt location is at 127MB */ - new_fdt_addr = fdt_ram_start + (127 * 1024 * 1024) + fdt_size; + /* + * Safe fdt location is at 127 MiB. + * On the sandbox convert from the sandbox address space. + */ + new_fdt_addr = (uintptr_t)map_sysmem(fdt_ram_start + 0x7f00000 + + fdt_size, 0); ret = efi_allocate_pages(EFI_ALLOCATE_MAX_ADDRESS, EFI_RUNTIME_SERVICES_DATA, fdt_pages, &new_fdt_addr); @@ -200,12 +205,11 @@ static efi_status_t copy_fdt(ulong *fdt_addrp) goto done; } } - - new_fdt = map_sysmem(new_fdt_addr, fdt_size); + new_fdt = (void *)(uintptr_t)new_fdt_addr; memcpy(new_fdt, fdt, fdt_totalsize(fdt)); fdt_set_totalsize(new_fdt, fdt_size); - *fdt_addrp = new_fdt_addr; + *fdtp = (void *)(uintptr_t)new_fdt_addr; done: return ret; } @@ -273,6 +277,9 @@ static void efi_carve_out_dt_rsv(void *fdt) if (fdt_get_mem_rsv(fdt, i, &addr, &size) != 0) continue; + /* Convert from sandbox address space. */ + addr = (uintptr_t)map_sysmem(addr, 0); + /* * Do not carve out the device tree. It is already marked as * EFI_RUNTIME_SERVICES_DATA @@ -301,12 +308,10 @@ static efi_status_t efi_install_fdt(ulong fdt_addr) } /* Prepare fdt for payload */ - ret = copy_fdt(&fdt_addr); + ret = copy_fdt(&fdt); if (ret) return ret; - unmap_sysmem(fdt); - fdt = map_sysmem(fdt_addr, 0); if (image_setup_libfdt(&img, fdt, 0, NULL)) { printf("ERROR: failed to process device tree\n"); return EFI_LOAD_ERROR; |