diff options
Diffstat (limited to 'resources/depthcharge/patch/0004-Adaptation-for-a-read-only-boot-path-when-no-vboot-h.patch')
| -rw-r--r-- | resources/depthcharge/patch/0004-Adaptation-for-a-read-only-boot-path-when-no-vboot-h.patch | 132 |
1 files changed, 132 insertions, 0 deletions
diff --git a/resources/depthcharge/patch/0004-Adaptation-for-a-read-only-boot-path-when-no-vboot-h.patch b/resources/depthcharge/patch/0004-Adaptation-for-a-read-only-boot-path-when-no-vboot-h.patch new file mode 100644 index 00000000..890791b2 --- /dev/null +++ b/resources/depthcharge/patch/0004-Adaptation-for-a-read-only-boot-path-when-no-vboot-h.patch @@ -0,0 +1,132 @@ +From 5ad9900434045ea97c536c98cb514bdb43114c12 Mon Sep 17 00:00:00 2001 +From: Paul Kocialkowski <contact@paulk.fr> +Date: Sun, 9 Aug 2015 12:09:35 +0200 +Subject: [PATCH 4/7] Adaptation for a read-only boot path when no vboot + handoff data is found + +When no vboot handoff data is found, this makes the unified depthcharge build +attempt to follow the read-only boot path. + +vboot_select_firmware is called to grab the kernel key from the firmware header, +but it won't actually jump to a RW version of depthcharge. + +Signed-off-by: Paul Kocialkowski <contact@paulk.fr> +--- + src/image/Makefile.inc | 1 + + src/image/startrw_stub.c | 34 ++++++++++++++++++++++++++++++++++ + src/vboot/main.c | 17 ++++++++++++++++- + src/vboot/util/commonparams-unified.c | 11 +++++++++-- + 4 files changed, 60 insertions(+), 3 deletions(-) + create mode 100644 src/image/startrw_stub.c + +diff --git a/src/image/Makefile.inc b/src/image/Makefile.inc +index 95aeda1..4b74c11 100644 +--- a/src/image/Makefile.inc ++++ b/src/image/Makefile.inc +@@ -18,6 +18,7 @@ + depthcharge-y += fmap.c + depthcharge-y += index.c + readonly-y += startrw.c ++unified-y += startrw_stub.c + + trampoline-y += load_elf.c + +diff --git a/src/image/startrw_stub.c b/src/image/startrw_stub.c +new file mode 100644 +index 0000000..8e40302 +--- /dev/null ++++ b/src/image/startrw_stub.c +@@ -0,0 +1,34 @@ ++/* ++ * Copyright 2012 Google Inc. ++ * ++ * See file CREDITS for list of people who contributed to this ++ * project. ++ * ++ * This program is free software; you can redistribute it and/or ++ * modify it under the terms of the GNU General Public License as ++ * published by the Free Software Foundation; either version 2 of ++ * the License, or (at your option) any later version. ++ * ++ * This program is distributed in the hope that it will be useful, ++ * but without any warranty; without even the implied warranty of ++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ++ * GNU General Public License for more details. ++ * ++ * You should have received a copy of the GNU General Public License ++ * along with this program; if not, write to the Free Software ++ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, ++ * MA 02111-1307 USA ++ */ ++ ++#include <libpayload.h> ++#include <lzma.h> ++ ++#include "base/elf.h" ++#include "image/enter_trampoline.h" ++#include "image/startrw.h" ++#include "image/symbols.h" ++ ++int start_rw_firmware(const void *compressed_image, uint32_t size) ++{ ++ return 0; ++} +diff --git a/src/vboot/main.c b/src/vboot/main.c +index 7dc05f5..97a218d 100644 +--- a/src/vboot/main.c ++++ b/src/vboot/main.c +@@ -82,6 +82,20 @@ static int vboot_init_handoff() + return vboot_do_init_out_flags(vboot_handoff->init_params.out_flags); + } + ++static int vboot_init_ro() ++{ ++ // Set up the common param structure, clearing shared data. ++ if (common_params_init(1)) ++ return 1; ++ ++ // Initialize vboot. ++ if (vboot_init()) ++ return 1; ++ ++ // Select firmware. ++ return vboot_select_firmware(); ++} ++ + int main(void) + { + // Let the world know we're alive. +@@ -108,7 +122,8 @@ int main(void) + + // Set up the common param structure, not clearing shared data. + if (vboot_init_handoff()) +- halt(); ++ if (vboot_init_ro()) ++ halt(); + + /* Fastboot is only entered in recovery path */ + if (vboot_in_recovery()) +diff --git a/src/vboot/util/commonparams-unified.c b/src/vboot/util/commonparams-unified.c +index 10fcb93..575dcfd 100644 +--- a/src/vboot/util/commonparams-unified.c ++++ b/src/vboot/util/commonparams-unified.c +@@ -28,7 +28,14 @@ + int find_common_params(void **blob, int *size) + { + struct vboot_handoff *vboot_handoff = lib_sysinfo.vboot_handoff; +- *blob = &vboot_handoff->shared_data[0]; +- *size = ARRAY_SIZE(vboot_handoff->shared_data); ++ ++ if (vboot_handoff != NULL) { ++ *blob = &vboot_handoff->shared_data[0]; ++ *size = ARRAY_SIZE(vboot_handoff->shared_data); ++ } else { ++ *blob = shared_data_blob; ++ *size = sizeof(shared_data_blob); ++ } ++ + return 0; + } +-- +1.9.1 + |