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x86: coreboot: Decode additional coreboot sysinfo tags 

Add support for decoding tags for GPIOs, compile/build info, cbmem and
other features.

Signed-off-by: Stefan Reinauer <reinauer@chromium.org>
Signed-off-by: Vadim Bendebury <vbendeb@chromium.org>
Signed-off-by: Gabe Black <gabeblack@chromium.org>

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass 2012-10-12 18:48:46 +00:00
parent 93c1735f41
commit 402ed0048a
3 changed files with 188 additions and 29 deletions
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109
arch/x86/cpu/coreboot/tables.c
View File

@ -28,6 +28,7 @@
* SUCH DAMAGE.
*/
#include <common.h>
#include <asm/arch-coreboot/ipchecksum.h>
#include <asm/arch-coreboot/sysinfo.h>
#include <asm/arch-coreboot/tables.h>
@ -80,22 +81,45 @@ static void cb_parse_memory(unsigned char *ptr, struct sysinfo_t *info)
static void cb_parse_serial(unsigned char *ptr, struct sysinfo_t *info)
{
struct cb_serial *ser = (struct cb_serial *)ptr;
if (ser->type != CB_SERIAL_TYPE_IO_MAPPED)
return;
info->ser_ioport = ser->baseaddr;
info->serial = ser;
}
static void cb_parse_optiontable(unsigned char *ptr, struct sysinfo_t *info)
static void cb_parse_vbnv(unsigned char *ptr, struct sysinfo_t *info)
{
info->option_table = (struct cb_cmos_option_table *)ptr;
struct cb_vbnv *vbnv = (struct cb_vbnv *)ptr;
info->vbnv_start = vbnv->vbnv_start;
info->vbnv_size = vbnv->vbnv_size;
}
static void cb_parse_checksum(unsigned char *ptr, struct sysinfo_t *info)
static void cb_parse_gpios(unsigned char *ptr, struct sysinfo_t *info)
{
struct cb_cmos_checksum *cmos_cksum = (struct cb_cmos_checksum *)ptr;
info->cmos_range_start = cmos_cksum->range_start;
info->cmos_range_end = cmos_cksum->range_end;
info->cmos_checksum_location = cmos_cksum->location;
int i;
struct cb_gpios *gpios = (struct cb_gpios *)ptr;
info->num_gpios = (gpios->count < SYSINFO_MAX_GPIOS) ?
(gpios->count) : SYSINFO_MAX_GPIOS;
for (i = 0; i < info->num_gpios; i++)
info->gpios[i] = gpios->gpios[i];
}
static void cb_parse_vdat(unsigned char *ptr, struct sysinfo_t *info)
{
struct cb_vdat *vdat = (struct cb_vdat *) ptr;
info->vdat_addr = vdat->vdat_addr;
info->vdat_size = vdat->vdat_size;
}
static void cb_parse_tstamp(unsigned char *ptr, struct sysinfo_t *info)
{
info->tstamp_table = ((struct cb_cbmem_tab *)ptr)->cbmem_tab;
}
static void cb_parse_cbmem_cons(unsigned char *ptr, struct sysinfo_t *info)
{
info->cbmem_cons = ((struct cb_cbmem_tab *)ptr)->cbmem_tab;
}
static void cb_parse_framebuffer(unsigned char *ptr, struct sysinfo_t *info)
@ -103,6 +127,11 @@ static void cb_parse_framebuffer(unsigned char *ptr, struct sysinfo_t *info)
info->framebuffer = (struct cb_framebuffer *)ptr;
}
static void cb_parse_string(unsigned char *ptr, char **info)
{
*info = (char *)((struct cb_string *)ptr)->string;
}
static int cb_parse_header(void *addr, int len, struct sysinfo_t *info)
{
struct cb_header *header;
@ -133,6 +162,9 @@ static int cb_parse_header(void *addr, int len, struct sysinfo_t *info)
/* Now, walk the tables. */
ptr += header->header_bytes;
/* Inintialize some fields to sentinel values. */
info->vbnv_start = info->vbnv_size = (uint32_t)(-1);
for (i = 0; i < header->table_entries; i++) {
struct cb_record *rec = (struct cb_record *)ptr;
@ -150,11 +182,35 @@ static int cb_parse_header(void *addr, int len, struct sysinfo_t *info)
case CB_TAG_SERIAL:
cb_parse_serial(ptr, info);
break;
case CB_TAG_CMOS_OPTION_TABLE:
cb_parse_optiontable(ptr, info);
case CB_TAG_VERSION:
cb_parse_string(ptr, &info->version);
break;
case CB_TAG_OPTION_CHECKSUM:
cb_parse_checksum(ptr, info);
case CB_TAG_EXTRA_VERSION:
cb_parse_string(ptr, &info->extra_version);
break;
case CB_TAG_BUILD:
cb_parse_string(ptr, &info->build);
break;
case CB_TAG_COMPILE_TIME:
cb_parse_string(ptr, &info->compile_time);
break;
case CB_TAG_COMPILE_BY:
cb_parse_string(ptr, &info->compile_by);
break;
case CB_TAG_COMPILE_HOST:
cb_parse_string(ptr, &info->compile_host);
break;
case CB_TAG_COMPILE_DOMAIN:
cb_parse_string(ptr, &info->compile_domain);
break;
case CB_TAG_COMPILER:
cb_parse_string(ptr, &info->compiler);
break;
case CB_TAG_LINKER:
cb_parse_string(ptr, &info->linker);
break;
case CB_TAG_ASSEMBLER:
cb_parse_string(ptr, &info->assembler);
break;
/*
* FIXME we should warn on serial if coreboot set up a
@ -163,6 +219,21 @@ static int cb_parse_header(void *addr, int len, struct sysinfo_t *info)
case CB_TAG_FRAMEBUFFER:
cb_parse_framebuffer(ptr, info);
break;
case CB_TAG_GPIO:
cb_parse_gpios(ptr, info);
break;
case CB_TAG_VDAT:
cb_parse_vdat(ptr, info);
break;
case CB_TAG_TIMESTAMPS:
cb_parse_tstamp(ptr, info);
break;
case CB_TAG_CBMEM_CONSOLE:
cb_parse_cbmem_cons(ptr, info);
break;
case CB_TAG_VBNV:
cb_parse_vbnv(ptr, info);
break;
}
ptr += rec->size;
@ -174,18 +245,12 @@ static int cb_parse_header(void *addr, int len, struct sysinfo_t *info)
/* == Architecture specific == */
/* This is the x86 specific stuff. */
/* Assume no translation or that memory is identity mapped. */
static void *phys_to_virt(unsigned long virt)
{
return (void *)(uintptr_t)virt;
}
int get_coreboot_info(struct sysinfo_t *info)
{
int ret = cb_parse_header(phys_to_virt(0x00000000), 0x1000, info);
int ret = cb_parse_header((void *)0x00000000, 0x1000, info);
if (ret != 1)
ret = cb_parse_header(phys_to_virt(0x000f0000), 0x1000, info);
ret = cb_parse_header((void *)0x000f0000, 0x1000, info);
return (ret == 1) ? 0 : -1;
}

34
arch/x86/include/asm/arch-coreboot/sysinfo.h
View File

@ -30,32 +30,52 @@
#ifndef _COREBOOT_SYSINFO_H
#define _COREBOOT_SYSINFO_H
#include <common.h>
#include <compiler.h>
#include <fdt.h>
#include <asm/arch/tables.h>
/* Allow a maximum of 16 memory range definitions. */
#define SYSINFO_MAX_MEM_RANGES 16
/* Allow a maximum of 8 GPIOs */
#define SYSINFO_MAX_GPIOS 8
struct sysinfo_t {
unsigned int cpu_khz;
unsigned short ser_ioport;
unsigned long ser_base; /* for mmapped serial */
int n_memranges;
struct memrange {
unsigned long long base;
unsigned long long size;
unsigned int type;
} memrange[SYSINFO_MAX_MEM_RANGES];
struct cb_cmos_option_table *option_table;
u32 cmos_range_start;
u32 cmos_range_end;
u32 cmos_checksum_location;
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;
struct cb_framebuffer *framebuffer;
unsigned long *mbtable; /** Pointer to the multiboot table */
int num_gpios;
struct cb_gpio gpios[SYSINFO_MAX_GPIOS];
void *vdat_addr;
u32 vdat_size;
void *tstamp_table;
void *cbmem_cons;
struct cb_serial *serial;
};
extern struct sysinfo_t lib_sysinfo;

74
arch/x86/include/asm/arch-coreboot/tables.h
View File

@ -164,6 +164,55 @@ struct cb_framebuffer {
u8 reserved_mask_size;
};
#define CB_TAG_GPIO 0x0013
#define GPIO_MAX_NAME_LENGTH 16
struct cb_gpio {
u32 port;
u32 polarity;
u32 value;
u8 name[GPIO_MAX_NAME_LENGTH];
};
struct cb_gpios {
u32 tag;
u32 size;
u32 count;
struct cb_gpio gpios[0];
};
#define CB_TAG_FDT 0x0014
struct cb_fdt {
uint32_t tag;
uint32_t size; /* size of the entire entry */
/* the actual FDT gets placed here */
};
#define CB_TAG_VDAT 0x0015
struct cb_vdat {
uint32_t tag;
uint32_t size; /* size of the entire entry */
void *vdat_addr;
uint32_t vdat_size;
};
#define CB_TAG_TIMESTAMPS 0x0016
#define CB_TAG_CBMEM_CONSOLE 0x0017
#define CB_TAG_MRC_CACHE 0x0018
struct cb_cbmem_tab {
uint32_t tag;
uint32_t size;
void *cbmem_tab;
};
#define CB_TAG_VBNV 0x0019
struct cb_vbnv {
uint32_t tag;
uint32_t size;
uint32_t vbnv_start;
uint32_t vbnv_size;
};
#define CB_TAG_CMOS_OPTION_TABLE 0x00c8
struct cb_cmos_option_table {
u32 tag;
@ -238,4 +287,29 @@ struct sysinfo_t;
int get_coreboot_info(struct sysinfo_t *info);
#define CBMEM_TOC_RESERVED 512
#define MAX_CBMEM_ENTRIES 16
#define CBMEM_MAGIC 0x434f5245
struct cbmem_entry {
u32 magic;
u32 id;
u64 base;
u64 size;
} __packed;
#define CBMEM_ID_FREESPACE 0x46524545
#define CBMEM_ID_GDT 0x4c474454
#define CBMEM_ID_ACPI 0x41435049
#define CBMEM_ID_CBTABLE 0x43425442
#define CBMEM_ID_PIRQ 0x49525154
#define CBMEM_ID_MPTABLE 0x534d5054
#define CBMEM_ID_RESUME 0x5245534d
#define CBMEM_ID_RESUME_SCRATCH 0x52455343
#define CBMEM_ID_SMBIOS 0x534d4254
#define CBMEM_ID_TIMESTAMP 0x54494d45
#define CBMEM_ID_MRCDATA 0x4d524344
#define CBMEM_ID_CONSOLE 0x434f4e53
#define CBMEM_ID_NONE 0x00000000
#endif