diff options
| author | Nico Huber <nico.h@gmx.de> | 2020-07-18 16:29:18 +0200 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2020-08-24 09:13:35 +0000 |
| commit | 4a7325228f7afbb47a35300a76bde5e5da0a833a (patch) | |
| tree | d0632e7598f5f85c822c42439c1c64a9f35c6197 /payloads/libpayload/include | |
| parent | bea01e32b277682d273fa4a054f34cf725cb15b7 (diff) | |
libpayload: Cache physical location of strings
In the presence of self-relocating payloads, it's safer to keep
physical addresses in `libsysinfo`. This updates the remaining
pointers that are not consumed by libpayload code, all of them
strings.
Also update the comment that `libsysinfo` only containts physical
addresses.
Change-Id: I9d095c826b00d621201c34b329fb9b5beb1ec794
Signed-off-by: Nico Huber <nico.h@gmx.de>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/43581
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Julius Werner <jwerner@chromium.org>
Diffstat (limited to 'payloads/libpayload/include')
| -rw-r--r-- | payloads/libpayload/include/sysinfo.h | 31 |
1 files changed, 16 insertions, 15 deletions
diff --git a/payloads/libpayload/include/sysinfo.h b/payloads/libpayload/include/sysinfo.h index a1b0545074..fe3d3304c4 100644 --- a/payloads/libpayload/include/sysinfo.h +++ b/payloads/libpayload/include/sysinfo.h @@ -42,10 +42,11 @@ #include <coreboot_tables.h> /* - * All pointers in here shall be virtual. + * This is a collection of information and pointers gathered + * mostly from the coreboot table. * - * If a relocation happens after the last call to lib_get_sysinfo(), - * it is up to the user to call lib_get_sysinfo() again. + * We do not store virtual pointers in here to avoid problems + * with self-relocating payloads. */ struct sysinfo_t { unsigned int cpu_khz; @@ -68,18 +69,18 @@ struct sysinfo_t { u32 vbnv_start; u32 vbnv_size; - char *version; - char *extra_version; - char *build; - char *compile_time; - char *compile_by; - char *compile_host; - char *compile_domain; - char *compiler; - char *linker; - char *assembler; + uintptr_t version; + uintptr_t extra_version; + uintptr_t build; + uintptr_t compile_time; + uintptr_t compile_by; + uintptr_t compile_host; + uintptr_t compile_domain; + uintptr_t compiler; + uintptr_t linker; + uintptr_t assembler; - char *cb_version; + uintptr_t cb_version; struct cb_framebuffer framebuffer; @@ -87,7 +88,7 @@ struct sysinfo_t { struct cb_gpio gpios[SYSINFO_MAX_GPIOS]; int num_macs; struct mac_address macs[SYSINFO_MAX_MACS]; - char *serialno; + uintptr_t serialno; unsigned long *mbtable; /** Pointer to the multiboot table */ |