Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932109AbcCRQuJ (ORCPT ); Fri, 18 Mar 2016 12:50:09 -0400 Received: from mail-wm0-f53.google.com ([74.125.82.53]:36273 "EHLO mail-wm0-f53.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751819AbcCRQsG (ORCPT ); Fri, 18 Mar 2016 12:48:06 -0400 From: Ard Biesheuvel To: linux-kernel@vger.kernel.org, linux-efi@vger.kernel.org, linux-arm-kernel@lists.infradead.org, matt@codeblueprint.co.uk, catalin.marinas@arm.com, will.deacon@arm.com, linux@arm.linux.org.uk, pjones@redhat.com, dh.herrmann@gmail.com Cc: leif.lindholm@linaro.org, mark.rutland@arm.com, x86@kernel.org, Ard Biesheuvel Subject: [PATCH v2 7/9] efi/arm*: libstub: wire up GOP protocol to struct screen_info Date: Fri, 18 Mar 2016 17:47:39 +0100 Message-Id: <1458319661-19762-8-git-send-email-ard.biesheuvel@linaro.org> X-Mailer: git-send-email 2.5.0 In-Reply-To: <1458319661-19762-1-git-send-email-ard.biesheuvel@linaro.org> References: <1458319661-19762-1-git-send-email-ard.biesheuvel@linaro.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2243 Lines: 66 This adds the code to the ARM and arm64 versions of the UEFI stub to populate struct screen_info based on the information received from the firmware via the GOP protocol. Signed-off-by: Ard Biesheuvel --- drivers/firmware/efi/libstub/arm-stub.c | 23 ++++++++++++++++++++ 1 file changed, 23 insertions(+) diff --git a/drivers/firmware/efi/libstub/arm-stub.c b/drivers/firmware/efi/libstub/arm-stub.c index 4deb3e7faa0e..94bd51cfb71e 100644 --- a/drivers/firmware/efi/libstub/arm-stub.c +++ b/drivers/firmware/efi/libstub/arm-stub.c @@ -147,6 +147,25 @@ void efi_char16_printk(efi_system_table_t *sys_table_arg, out->output_string(out, str); } +static struct screen_info *setup_graphics(efi_system_table_t *sys_table_arg) +{ + efi_guid_t gop_proto = EFI_GRAPHICS_OUTPUT_PROTOCOL_GUID; + efi_status_t status; + unsigned long size; + void **gop_handle = NULL; + struct screen_info *si = NULL; + + size = 0; + status = efi_call_early(locate_handle, EFI_LOCATE_BY_PROTOCOL, + &gop_proto, NULL, &size, gop_handle); + if (status == EFI_BUFFER_TOO_SMALL) { + si = alloc_screen_info(sys_table_arg); + if (!si) + return NULL; + efi_setup_gop(sys_table_arg, si, &gop_proto, size); + } + return si; +} /* * This function handles the architcture specific differences between arm and @@ -185,6 +204,7 @@ unsigned long efi_entry(void *handle, efi_system_table_t *sys_table, efi_guid_t loaded_image_proto = LOADED_IMAGE_PROTOCOL_GUID; unsigned long reserve_addr = 0; unsigned long reserve_size = 0; + struct screen_info *si; /* Check if we were booted by the EFI firmware */ if (sys_table->hdr.signature != EFI_SYSTEM_TABLE_SIGNATURE) @@ -233,6 +253,8 @@ unsigned long efi_entry(void *handle, efi_system_table_t *sys_table, __nokaslr = true; } + si = setup_graphics(sys_table); + status = handle_kernel_image(sys_table, image_addr, &image_size, &reserve_addr, &reserve_size, @@ -305,6 +327,7 @@ fail_free_image: efi_free(sys_table, image_size, *image_addr); efi_free(sys_table, reserve_size, reserve_addr); fail_free_cmdline: + free_screen_info(sys_table, si); efi_free(sys_table, cmdline_size, (unsigned long)cmdline_ptr); fail: return EFI_ERROR; -- 2.5.0