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authorNico Huber <nico.h@gmx.de>2022-02-22 02:06:51 +0100
committerNico Huber <nico.h@gmx.de>2022-02-23 22:47:09 +0000
commit4fa9f2ae8bfe9260afa5f8e1880f430e551ff7c0 (patch)
treef4340a3de871ca5b601da20117eafbb4bd8dacc6 /payloads/libpayload/arch
parent22372f4ac90780407533ebefc25d1740fc72ce7c (diff)
libpayload/x86: Fix boot_device_read() and hook it up
Casts from integer to pointer are usually a case for phys_to_virt(). Change-Id: I861d435ff2361cdc26a2abd46d43b9346fa67ccc Signed-off-by: Nico Huber <nico.h@gmx.de> Reviewed-on: https://review.coreboot.org/c/coreboot/+/62246 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Julius Werner <jwerner@chromium.org>
Diffstat (limited to 'payloads/libpayload/arch')
-rw-r--r--payloads/libpayload/arch/x86/Makefile.inc1
-rw-r--r--payloads/libpayload/arch/x86/boot_media.c3
2 files changed, 3 insertions, 1 deletions
diff --git a/payloads/libpayload/arch/x86/Makefile.inc b/payloads/libpayload/arch/x86/Makefile.inc
index 41228f2e12..e010329eba 100644
--- a/payloads/libpayload/arch/x86/Makefile.inc
+++ b/payloads/libpayload/arch/x86/Makefile.inc
@@ -42,6 +42,7 @@ libc-$(CONFIG_LP_GPL) += string.c
libgdb-y += gdb.c
libcbfs-$(CONFIG_LP_CBFS) += rom_media.c
+libcbfs-$(CONFIG_LP_CBFS) += boot_media.c
# Multiboot support is configurable
libc-$(CONFIG_LP_MULTIBOOT) += multiboot.c
diff --git a/payloads/libpayload/arch/x86/boot_media.c b/payloads/libpayload/arch/x86/boot_media.c
index ce0283273d..99fb4e3c2a 100644
--- a/payloads/libpayload/arch/x86/boot_media.c
+++ b/payloads/libpayload/arch/x86/boot_media.c
@@ -1,5 +1,6 @@
/* SPDX-License-Identifier: BSD-3-Clause */
+#include <arch/virtual.h>
#include <boot_device.h>
#include <commonlib/bsd/cb_err.h>
#include <stddef.h>
@@ -11,7 +12,7 @@ __attribute__((weak)) ssize_t boot_device_read(void *buf, size_t offset, size_t
/* Memory-mapping usually only works for the top 16MB. */
if (!lib_sysinfo.boot_media_size || lib_sysinfo.boot_media_size - offset > 16 * MiB)
return CB_ERR_ARG;
- void *ptr = (void *)(uintptr_t)(0 - lib_sysinfo.boot_media_size + offset);
+ const void *const ptr = phys_to_virt(0 - lib_sysinfo.boot_media_size + offset);
memcpy(buf, ptr, size);
return size;
}