mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-11 22:03:15 +00:00
467382ca03
After some header file cleanups to add missing include files, remove common.h from all files in the lib directory. This primarily means just dropping the line but in a few cases we need to add in other header files now. Reviewed-by: Simon Glass <sjg@chromium.org> Signed-off-by: Tom Rini <trini@konsulko.com>
265 lines
6.8 KiB
C
265 lines
6.8 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Copyright (C) 2020, Bachmann electronic GmbH
|
|
*/
|
|
|
|
#define LOG_CATEGORY LOGC_BOOT
|
|
|
|
#include <smbios.h>
|
|
|
|
static inline int verify_checksum(const struct smbios_entry *e)
|
|
{
|
|
/*
|
|
* Checksums for SMBIOS tables are calculated to have a value, so that
|
|
* the sum over all bytes yields zero (using unsigned 8 bit arithmetic).
|
|
*/
|
|
u8 *byte = (u8 *)e;
|
|
u8 sum = 0;
|
|
|
|
for (int i = 0; i < e->length; i++)
|
|
sum += byte[i];
|
|
|
|
return sum;
|
|
}
|
|
|
|
const struct smbios_entry *smbios_entry(u64 address, u32 size)
|
|
{
|
|
const struct smbios_entry *entry = (struct smbios_entry *)(uintptr_t)address;
|
|
|
|
if (!address | !size)
|
|
return NULL;
|
|
|
|
if (memcmp(entry->anchor, "_SM_", 4))
|
|
return NULL;
|
|
|
|
if (verify_checksum(entry))
|
|
return NULL;
|
|
|
|
return entry;
|
|
}
|
|
|
|
static u8 *find_next_header(u8 *pos)
|
|
{
|
|
/* search for _double_ NULL bytes */
|
|
while (!((*pos == 0) && (*(pos + 1) == 0)))
|
|
pos++;
|
|
|
|
/* step behind the double NULL bytes */
|
|
pos += 2;
|
|
|
|
return pos;
|
|
}
|
|
|
|
static struct smbios_header *get_next_header(struct smbios_header *curr)
|
|
{
|
|
u8 *pos = ((u8 *)curr) + curr->length;
|
|
|
|
return (struct smbios_header *)find_next_header(pos);
|
|
}
|
|
|
|
static const struct smbios_header *next_header(const struct smbios_header *curr)
|
|
{
|
|
u8 *pos = ((u8 *)curr) + curr->length;
|
|
|
|
return (struct smbios_header *)find_next_header(pos);
|
|
}
|
|
|
|
const struct smbios_header *smbios_header(const struct smbios_entry *entry, int type)
|
|
{
|
|
const unsigned int num_header = entry->struct_count;
|
|
const struct smbios_header *header = (struct smbios_header *)((uintptr_t)entry->struct_table_address);
|
|
|
|
for (unsigned int i = 0; i < num_header; i++) {
|
|
if (header->type == type)
|
|
return header;
|
|
|
|
header = next_header(header);
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static char *string_from_smbios_table(const struct smbios_header *header,
|
|
int idx)
|
|
{
|
|
unsigned int i = 1;
|
|
u8 *pos;
|
|
|
|
if (!header)
|
|
return NULL;
|
|
|
|
pos = ((u8 *)header) + header->length;
|
|
|
|
while (i < idx) {
|
|
if (*pos == 0x0)
|
|
i++;
|
|
|
|
pos++;
|
|
}
|
|
|
|
return (char *)pos;
|
|
}
|
|
|
|
char *smbios_string(const struct smbios_header *header, int index)
|
|
{
|
|
if (!header)
|
|
return NULL;
|
|
|
|
return string_from_smbios_table(header, index);
|
|
}
|
|
|
|
int smbios_update_version_full(void *smbios_tab, const char *version)
|
|
{
|
|
const struct smbios_header *hdr;
|
|
struct smbios_type0 *bios;
|
|
uint old_len, len;
|
|
char *ptr;
|
|
|
|
log_info("Updating SMBIOS table at %p\n", smbios_tab);
|
|
hdr = smbios_header(smbios_tab, SMBIOS_BIOS_INFORMATION);
|
|
if (!hdr)
|
|
return log_msg_ret("tab", -ENOENT);
|
|
bios = (struct smbios_type0 *)hdr;
|
|
ptr = smbios_string(hdr, bios->bios_ver);
|
|
if (!ptr)
|
|
return log_msg_ret("str", -ENOMEDIUM);
|
|
|
|
/*
|
|
* This string is supposed to have at least enough bytes and is
|
|
* padded with spaces. Update it, taking care not to move the
|
|
* \0 terminator, so that other strings in the string table
|
|
* are not disturbed. See smbios_add_string()
|
|
*/
|
|
old_len = strnlen(ptr, SMBIOS_STR_MAX);
|
|
len = strnlen(version, SMBIOS_STR_MAX);
|
|
if (len > old_len)
|
|
return log_ret(-ENOSPC);
|
|
|
|
log_debug("Replacing SMBIOS type 0 version string '%s'\n", ptr);
|
|
memcpy(ptr, version, len);
|
|
#ifdef LOG_DEBUG
|
|
print_buffer((ulong)ptr, ptr, 1, old_len + 1, 0);
|
|
#endif
|
|
|
|
return 0;
|
|
}
|
|
|
|
struct smbios_filter_param {
|
|
u32 offset;
|
|
u32 size;
|
|
bool is_string;
|
|
};
|
|
|
|
struct smbios_filter_table {
|
|
int type;
|
|
struct smbios_filter_param *params;
|
|
u32 count;
|
|
};
|
|
|
|
struct smbios_filter_param smbios_type1_filter_params[] = {
|
|
{offsetof(struct smbios_type1, serial_number),
|
|
FIELD_SIZEOF(struct smbios_type1, serial_number), true},
|
|
{offsetof(struct smbios_type1, uuid),
|
|
FIELD_SIZEOF(struct smbios_type1, uuid), false},
|
|
{offsetof(struct smbios_type1, wakeup_type),
|
|
FIELD_SIZEOF(struct smbios_type1, wakeup_type), false},
|
|
};
|
|
|
|
struct smbios_filter_param smbios_type2_filter_params[] = {
|
|
{offsetof(struct smbios_type2, serial_number),
|
|
FIELD_SIZEOF(struct smbios_type2, serial_number), true},
|
|
{offsetof(struct smbios_type2, chassis_location),
|
|
FIELD_SIZEOF(struct smbios_type2, chassis_location), false},
|
|
};
|
|
|
|
struct smbios_filter_param smbios_type3_filter_params[] = {
|
|
{offsetof(struct smbios_type3, serial_number),
|
|
FIELD_SIZEOF(struct smbios_type3, serial_number), true},
|
|
{offsetof(struct smbios_type3, asset_tag_number),
|
|
FIELD_SIZEOF(struct smbios_type3, asset_tag_number), true},
|
|
};
|
|
|
|
struct smbios_filter_param smbios_type4_filter_params[] = {
|
|
{offsetof(struct smbios_type4, serial_number),
|
|
FIELD_SIZEOF(struct smbios_type4, serial_number), true},
|
|
{offsetof(struct smbios_type4, asset_tag),
|
|
FIELD_SIZEOF(struct smbios_type4, asset_tag), true},
|
|
{offsetof(struct smbios_type4, part_number),
|
|
FIELD_SIZEOF(struct smbios_type4, part_number), true},
|
|
{offsetof(struct smbios_type4, core_count),
|
|
FIELD_SIZEOF(struct smbios_type4, core_count), false},
|
|
{offsetof(struct smbios_type4, core_enabled),
|
|
FIELD_SIZEOF(struct smbios_type4, core_enabled), false},
|
|
{offsetof(struct smbios_type4, thread_count),
|
|
FIELD_SIZEOF(struct smbios_type4, thread_count), false},
|
|
{offsetof(struct smbios_type4, core_count2),
|
|
FIELD_SIZEOF(struct smbios_type4, core_count2), false},
|
|
{offsetof(struct smbios_type4, core_enabled2),
|
|
FIELD_SIZEOF(struct smbios_type4, core_enabled2), false},
|
|
{offsetof(struct smbios_type4, thread_count2),
|
|
FIELD_SIZEOF(struct smbios_type4, thread_count2), false},
|
|
{offsetof(struct smbios_type4, voltage),
|
|
FIELD_SIZEOF(struct smbios_type4, voltage), false},
|
|
};
|
|
|
|
struct smbios_filter_table smbios_filter_tables[] = {
|
|
{SMBIOS_SYSTEM_INFORMATION, smbios_type1_filter_params,
|
|
ARRAY_SIZE(smbios_type1_filter_params)},
|
|
{SMBIOS_BOARD_INFORMATION, smbios_type2_filter_params,
|
|
ARRAY_SIZE(smbios_type2_filter_params)},
|
|
{SMBIOS_SYSTEM_ENCLOSURE, smbios_type3_filter_params,
|
|
ARRAY_SIZE(smbios_type3_filter_params)},
|
|
{SMBIOS_PROCESSOR_INFORMATION, smbios_type4_filter_params,
|
|
ARRAY_SIZE(smbios_type4_filter_params)},
|
|
};
|
|
|
|
static void clear_smbios_table(struct smbios_header *header,
|
|
struct smbios_filter_param *filter,
|
|
u32 count)
|
|
{
|
|
u32 i;
|
|
char *str;
|
|
u8 string_id;
|
|
|
|
for (i = 0; i < count; i++) {
|
|
if (filter[i].is_string) {
|
|
string_id = *((u8 *)header + filter[i].offset);
|
|
if (string_id == 0) /* string is empty */
|
|
continue;
|
|
|
|
str = smbios_string(header, string_id);
|
|
if (!str)
|
|
continue;
|
|
|
|
/* string is cleared to space, keep '\0' terminator */
|
|
memset(str, ' ', strlen(str));
|
|
|
|
} else {
|
|
memset((void *)((u8 *)header + filter[i].offset),
|
|
0, filter[i].size);
|
|
}
|
|
}
|
|
}
|
|
|
|
void smbios_prepare_measurement(const struct smbios_entry *entry,
|
|
struct smbios_header *smbios_copy)
|
|
{
|
|
u32 i, j;
|
|
struct smbios_header *header;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(smbios_filter_tables); i++) {
|
|
header = smbios_copy;
|
|
for (j = 0; j < entry->struct_count; j++) {
|
|
if (header->type == smbios_filter_tables[i].type)
|
|
break;
|
|
|
|
header = get_next_header(header);
|
|
}
|
|
if (j >= entry->struct_count)
|
|
continue;
|
|
|
|
clear_smbios_table(header,
|
|
smbios_filter_tables[i].params,
|
|
smbios_filter_tables[i].count);
|
|
}
|
|
}
|