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libpayload: Cache physical location of CBMEM entries 

In the presence of self-relocating payloads, it's safer to keep
physical addresses in `libsysinfo`. This updates all the references
to CBMEM entries that are not consumed inside libpayload code.

Change-Id: I3be64c8be8b46d00b457eafd7f80a8ed8e604030
Signed-off-by: Nico Huber <nico.h@gmx.de>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/43580
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
This commit is contained in:
Nico Huber 2020-07-18 16:15:42 +02:00 committed by Patrick Georgi
parent 12faea3095
commit bea01e32b2
5 changed files with 16 additions and 23 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
payloads/coreinfo/timestamps_module.c
View File

@ -147,7 +147,7 @@ static int timestamps_module_init(void)
if (ret)
return -1;
struct timestamp_table *timestamps = lib_sysinfo.tstamp_table;
struct timestamp_table *timestamps = phys_to_virt(lib_sysinfo.tstamp_table);
if (timestamps == NULL)
return -1;

2
payloads/libpayload/arch/x86/coreboot.c
View File

@ -49,7 +49,7 @@ static void cb_parse_x86_rom_var_mtrr(void *ptr, struct sysinfo_t *info)
static void cb_parse_mrc_cache(void *ptr, struct sysinfo_t *info)
{
info->mrc_cache = get_cbmem_ptr(ptr);
info->mrc_cache = get_cbmem_addr(ptr);
}
int cb_parse_arch_specific(struct cb_record *rec, struct sysinfo_t *info)

1
payloads/libpayload/include/coreboot_tables.h
View File

@ -396,6 +396,5 @@ static inline const char *cb_mb_part_string(const struct cb_mainboard *cbm)
+ (sizeof((_rec)->map[0]) * (_idx)))
/* Helper functions */
void *get_cbmem_ptr(unsigned char *ptr);
uintptr_t get_cbmem_addr(const void *cbmem_tab_entry);
#endif

16
payloads/libpayload/include/sysinfo.h
View File

@ -94,23 +94,23 @@ struct sysinfo_t {
uintptr_t cb_header;
uintptr_t cb_mainboard;
void *vboot_workbuf;
uintptr_t vboot_workbuf;
#if CONFIG(LP_ARCH_X86)
int x86_rom_var_mtrr_index;
#endif
void *tstamp_table;
uintptr_t tstamp_table;
uintptr_t cbmem_cons;
void *mrc_cache;
void *acpi_gnvs;
uintptr_t mrc_cache;
uintptr_t acpi_gnvs;
#define UNDEFINED_STRAPPING_ID (~0)
u32 board_id;
u32 ram_code;
u32 sku_id;
void *wifi_calibration;
uintptr_t wifi_calibration;
uint64_t ramoops_buffer;
uint32_t ramoops_buffer_size;
struct {
@ -124,11 +124,11 @@ struct sysinfo_t {
uint64_t boot_media_size;
uint64_t mtc_start;
uint32_t mtc_size;
void *chromeos_vpd;
int mmc_early_wake_status;
uintptr_t chromeos_vpd;
int mmc_early_wake_status;
/* Pointer to FMAP cache in CBMEM */
void *fmap_cache;
uintptr_t fmap_cache;
};
extern struct sysinfo_t lib_sysinfo;

18
payloads/libpayload/libc/coreboot.c
View File

@ -41,12 +41,6 @@
/* === Parsing code === */
/* This is the generic parsing code. */
void *get_cbmem_ptr(unsigned char *ptr)
{
struct cb_cbmem_tab *const cbmem = (struct cb_cbmem_tab *)ptr;
return phys_to_virt(cbmem->cbmem_tab);
}
uintptr_t get_cbmem_addr(const void *const cbmem_tab_entry)
{
const struct cb_cbmem_tab *const cbmem = cbmem_tab_entry;
@ -91,7 +85,7 @@ static void cb_parse_serial(void *ptr, struct sysinfo_t *info)
static void cb_parse_vboot_workbuf(unsigned char *ptr, struct sysinfo_t *info)
{
info->vboot_workbuf = get_cbmem_ptr(ptr);
info->vboot_workbuf = get_cbmem_addr(ptr);
}
static void cb_parse_vbnv(unsigned char *ptr, struct sysinfo_t *info)
@ -136,7 +130,7 @@ static void cb_parse_mac_addresses(unsigned char *ptr,
static void cb_parse_tstamp(unsigned char *ptr, struct sysinfo_t *info)
{
info->tstamp_table = get_cbmem_ptr(ptr);
info->tstamp_table = get_cbmem_addr(ptr);
}
static void cb_parse_cbmem_cons(unsigned char *ptr, struct sysinfo_t *info)
@ -146,7 +140,7 @@ static void cb_parse_cbmem_cons(unsigned char *ptr, struct sysinfo_t *info)
static void cb_parse_acpi_gnvs(unsigned char *ptr, struct sysinfo_t *info)
{
info->acpi_gnvs = get_cbmem_ptr(ptr);
info->acpi_gnvs = get_cbmem_addr(ptr);
}
static void cb_parse_board_id(unsigned char *ptr, struct sysinfo_t *info)
@ -197,7 +191,7 @@ static void cb_parse_string(unsigned char *ptr, char **info)
static void cb_parse_wifi_calibration(void *ptr, struct sysinfo_t *info)
{
info->wifi_calibration = get_cbmem_ptr(ptr);
info->wifi_calibration = get_cbmem_addr(ptr);
}
static void cb_parse_ramoops(void *ptr, struct sysinfo_t *info)
@ -238,12 +232,12 @@ static void cb_parse_boot_media_params(unsigned char *ptr,
static void cb_parse_vpd(void *ptr, struct sysinfo_t *info)
{
info->chromeos_vpd = get_cbmem_ptr(ptr);
info->chromeos_vpd = get_cbmem_addr(ptr);
}
static void cb_parse_fmap_cache(void *ptr, struct sysinfo_t *info)
{
info->fmap_cache = get_cbmem_ptr(ptr);
info->fmap_cache = get_cbmem_addr(ptr);
}
#if CONFIG(LP_TIMER_RDTSC)