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util/amdfwtool: Clarify calculations with structures 

Replace the use of multiples of DWORDs with structures that
describe the Embedded Firmware Table, and PSP directory
headers & entries.

TEST=Verify no difference in amdfw.rom for google/grunt build
     (Family 15h Models 70h-7Fh), amd/bettong (F15h 60h-6Fh),
     and pcengines/apu2 (F16h 30h-3Fh).  PSP_COMBO builds but
     was not verified.

Change-Id: If05952d9282a0fa5a397984eaae671fb33f6134a
Signed-off-by: Marshall Dawson <marshalldawson3rd@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/31727
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Martin Roth <martinroth@google.com>
This commit is contained in:
Marshall Dawson 2019-02-23 16:42:46 -07:00 committed by Martin Roth
parent c38c0c91aa
commit 239286ca44
1 changed files with 102 additions and 49 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

149
util/amdfwtool/amdfwtool.c
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@ -78,6 +78,10 @@
#define ALIGN(val, by) (((val) + (by) - 1) & ~((by) - 1))
#define EMBEDDED_FW_SIGNATURE 0x55aa55aa
#define PSP_COOKIE 0x50535024 /* 'PSP$' */
#define PSP2_COOKIE 0x50535032 /* 'PSP2' */
/*
Reserved for future.
TODO: PSP2 is for Combo BIOS, which is the idea that one image supports 2
@ -92,6 +96,7 @@
#define PSP_COMBO 0
#endif
typedef unsigned long long int uint64_t;
typedef unsigned int uint32_t;
typedef unsigned char uint8_t;
typedef unsigned short uint16_t;
@ -272,16 +277,67 @@ static amd_fw_entry amd_fw_table[] = {
{ .type = AMD_FW_INVALID },
};
static void fill_psp_head(uint32_t *pspdir, uint32_t count)
typedef struct _embedded_firmware {
uint32_t signature; /* 0x55aa55aa */
uint32_t imc_entry;
uint32_t gec_entry;
uint32_t xhci_entry;
uint32_t psp_entry;
uint32_t comboable;
} __attribute__((packed, aligned(16))) embedded_firmware;
typedef struct _psp_directory_header {
uint32_t cookie;
uint32_t checksum;
uint32_t num_entries;
uint32_t reserved;
} __attribute__((packed, aligned(16))) psp_directory_header;
typedef struct _psp_directory_entry {
uint32_t type; /* b[15:8] may be a modifier, e.g. subprogram */
uint32_t size;
uint64_t addr; /* or a value in some cases */
} __attribute__((packed)) psp_directory_entry;
typedef struct _psp_directory_table {
psp_directory_header header;
psp_directory_entry entries[];
} __attribute__((packed)) psp_directory_table;
typedef struct _psp_combo_header {
uint32_t cookie;
uint32_t checksum;
uint32_t num_entries;
uint32_t lookup;
uint64_t reserved[2];
} __attribute__((packed, aligned(16))) psp_combo_header;
typedef struct _psp_combo_entry {
uint32_t id_sel;
uint32_t id;
uint64_t lvl2_addr;
} __attribute__((packed)) psp_combo_entry;
typedef struct _psp_combo_directory {
psp_combo_header header;
psp_combo_entry entries[];
} __attribute__((packed)) psp_combo_directory;
static void fill_psp_head(psp_directory_table *pspdir, uint32_t count)
{
pspdir[0] = 0x50535024; /* 'PSP$' */
pspdir[2] = count; /* size */
pspdir[3] = 0;
pspdir[1] = fletcher32((uint16_t *)&pspdir[1],
(count * 16 + 16) / 2 - 2);
pspdir->header.cookie = PSP_COOKIE;
pspdir->header.num_entries = count;
pspdir->header.reserved = 0;
/* checksum everything that comes after the Checksum field */
pspdir->header.checksum = fletcher32(
(void *)&pspdir->header.num_entries,
(count * sizeof(psp_directory_entry)
+ sizeof(pspdir->header.num_entries)
+ sizeof(pspdir->header.reserved)) / 2);
}
static uint32_t integrate_firmwares(char *base, uint32_t pos, uint32_t *romsig,
static uint32_t integrate_firmwares(char *base, uint32_t pos,
embedded_firmware *romsig,
amd_fw_entry *fw_table, uint32_t rom_size)
{
int fd;
@ -307,13 +363,13 @@ static uint32_t integrate_firmwares(char *base, uint32_t pos, uint32_t *romsig,
switch (fw_table[i].type) {
case AMD_FW_IMC:
pos = ALIGN(pos, 0x10000U);
romsig[1] = pos + rom_base_address;
romsig->imc_entry = pos + rom_base_address;
break;
case AMD_FW_GEC:
romsig[2] = pos + rom_base_address;
romsig->gec_entry = pos + rom_base_address;
break;
case AMD_FW_XHCI:
romsig[3] = pos + rom_base_address;
romsig->xhci_entry = pos + rom_base_address;
break;
default:
/* Error */
@ -348,7 +404,7 @@ static uint32_t integrate_firmwares(char *base, uint32_t pos, uint32_t *romsig,
}
static uint32_t integrate_psp_firmwares(char *base, uint32_t pos,
uint32_t *pspdir,
psp_directory_table *pspdir,
amd_fw_entry *fw_table,
uint32_t rom_size)
{
@ -360,13 +416,12 @@ static uint32_t integrate_psp_firmwares(char *base, uint32_t pos,
for (i = 0, count = 0; fw_table[i].type != AMD_FW_INVALID; i++) {
if (fw_table[i].type == AMD_PSP_FUSE_CHAIN) {
pspdir[4+4*count+0] = fw_table[i].type;
pspdir[4+4*count+1] = 0xFFFFFFFF;
pspdir[4+4*count+2] = 1;
pspdir[4+4*count+3] = 0;
pspdir->entries[count].type = fw_table[i].type;
pspdir->entries[count].size = 0xFFFFFFFF;
pspdir->entries[count].addr = 1;
count++;
} else if (fw_table[i].filename != NULL) {
pspdir[4+4*count+0] = fw_table[i].type;
pspdir->entries[count].type = fw_table[i].type;
fd = open(fw_table[i].filename, O_RDONLY);
if (fd < 0) {
@ -379,10 +434,8 @@ static uint32_t integrate_psp_firmwares(char *base, uint32_t pos,
free(base);
exit(1);
}
pspdir[4+4*count+1] = (uint32_t)fd_stat.st_size;
pspdir[4+4*count+2] = pos + rom_base_address;
pspdir[4+4*count+3] = 0;
pspdir->entries[count].size = (uint32_t)fd_stat.st_size;
pspdir->entries[count].addr = pos + rom_base_address;
if (pos + fd_stat.st_size > rom_size) {
printf("Error: Specified ROM size of %d"
@ -505,7 +558,7 @@ int main(int argc, char **argv)
int retval = 0;
#if PSP2
int psp2flag = 0;
uint32_t *psp2dir;
psp_directory_table *psp2dir;
char *tmp;
#endif
#if PSP_COMBO
@ -514,7 +567,8 @@ int main(int argc, char **argv)
char *rom = NULL;
uint32_t current;
uint32_t *amd_romsig, *pspdir;
embedded_firmware *amd_romsig;
psp_directory_table *pspdir;
int targetfd;
char *output = NULL;
@ -746,13 +800,13 @@ int main(int argc, char **argv)
printf(" AMDFWTOOL Using firmware directory location of %08lx\n",
(unsigned long)rom_base_address + current);
amd_romsig = (void *)(rom + romsig_offset);
amd_romsig[0] = 0x55AA55AA; /* romsig */
amd_romsig[1] = 0;
amd_romsig[2] = 0;
amd_romsig[3] = 0;
amd_romsig = (embedded_firmware *)(rom + romsig_offset);
amd_romsig->signature = EMBEDDED_FW_SIGNATURE;
amd_romsig->imc_entry = 0;
amd_romsig->gec_entry = 0;
amd_romsig->xhci_entry = 0;
current += 0x20; /* size of ROMSIG */
current += sizeof(embedded_firmware);
current = ALIGN(current, 0x1000U);
current = integrate_firmwares(rom, current, amd_romsig,
amd_fw_table, rom_size);
@ -760,7 +814,7 @@ int main(int argc, char **argv)
if (pspflag == 1) {
current = ALIGN(current, 0x10000U);
pspdir = (void *)(rom + current);
amd_romsig[4] = current + rom_base_address;
amd_romsig->psp_entry = current + rom_base_address;
current += 0x200; /* Conservative size of pspdir */
current = integrate_psp_firmwares(rom, current, pspdir,
@ -771,35 +825,34 @@ int main(int argc, char **argv)
if (psp2flag == 1) {
current = ALIGN(current, 0x10000U); /* PSP2 dir */
psp2dir = (void *)(rom + current);
amd_romsig[5] = current + rom_base_address;
amd_romsig->comboable = current + rom_base_address;
current += 0x200; /* Add conservative size of psp2dir. */
#if PSP_COMBO
/* TODO: remove the hardcode. */
psp2count = 1; /* Start from 1. */
/* for (; psp2count <= PSP2COUNT; psp2count++, current=ALIGN(current, 0x100)) { */
/* Now the psp2dir is psp combo dir. */
psp2dir[psp2count*4 + 0 + 4] = 0; /* 0 -Compare PSP ID, 1 -Compare chip family ID */
psp2dir[psp2count*4 + 1 + 4] = 0x10220B00; /* TODO: PSP ID. Documentation is needed. */
psp2dir[psp2count*4 + 2 + 4] = current + rom_base_address;
pspdir = rom + current;
psp2dir[psp2count*4 + 3 + 4] = 0;
psp_combo_directory *combo_dir = (psp_combo_directory *)psp2dir;
combo_dir->entries[0].id_sel = 0; /* 0 -Compare PSP ID, 1 -Compare chip family ID */
combo_dir->entries[0].id = 0x10220B00; /* TODO: PSP ID. Documentation is needed. */
combo_dir->entries[0].lvl2_addr = current + rom_base_address;
pspdir = (psp_directory_table *)(rom + current);
current += 0x200; /* Add conservative size of pspdir. Start of PSP entries. */
current = integrate_psp_firmwares(rom, current, pspdir,
amd_psp2_fw_table, rom_size);
/* } */ /* End of loop */
/* fill the PSP combo head */
psp2dir[0] = 0x50535032; /* 'PSP2' */
psp2dir[2] = psp2count; /* Count */
psp2dir[3] = 1; /* 0-Dynamic look up through all entries, 1-PSP/chip ID match */
psp2dir[4] = 0; /* reserved 4 dwords. */
psp2dir[5] = 0;
psp2dir[6] = 0;
psp2dir[7] = 0;
psp2dir[1] = fletcher32((uint16_t *)&psp2dir[1],
(psp2count * 16 + 32) / 2 - 2);
combo_dir->header.cookie = PSP2_COOKIE;
combo_dir->header.num_entries = 1;
combo_dir->header.lookup = 1;
combo_dir->header.reserved[0] = 0;
combo_dir->header.reserved[1] = 0;
combo_dir->header.checksum = fletcher32(
(void *)&combo_dir->header.num_entries,
(1 * sizeof(psp_directory_entry)
+ sizeof(combo_dir->header.num_entries)
+ sizeof(combo_dir->header.lookup)
+ sizeof(combo_dir->header.reserved[0])
+ sizeof(combo_dir->header.reserved[1])) / 2);
#else
current = integrate_psp_firmwares(rom, current, psp2dir,
amd_psp2_fw_table, rom_size);