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soc/intel/broadwell: Consolidate SPD handling

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Mainboards do not need to know about `pei_data` to tell northbridge code
where to find the SPD data. As done on Haswell, add the `mb_get_spd_map`
function and the `struct spd_info` type to retrieve SPD information from
mainboard code without having to use `pei_data` in said mainboard code.

Unlike Haswell MRC, Broadwell MRC uses all positions of the `spd_data`
array, not just the first. The placeholder SPD address for memory-down
seems to be different as well. Adapt the existing code to handle these
variations. Once complete, the abstraction layer for both MRC binaries
will have the same API.

Change-Id: I92a05003a319c354675368cae8e34980bd2f9e10
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/55811
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Matt DeVillier <matt.devillier@gmail.com>
This commit is contained in:
Angel Pons
2021-06-23 16:14:56 +02:00
parent ae626d3035
commit 4a8cb30222
9 changed files with 53 additions and 52 deletions
Download Patch File Download Diff File Expand all files Collapse all files

11
src/soc/intel/broadwell/include/soc/pei_wrapper.h
View File

@@ -28,12 +28,17 @@ static inline void pei_data_usb3_port(struct pei_data *pei_data, int port,
#define SPD_MEMORY_DOWN 0xff
#define SPD_LEN 256
struct spd_info {
uint8_t addresses[4];
unsigned int spd_index;
};
/* Mainboard callback to fill in the SPD addresses */
void mb_get_spd_map(struct spd_info *spdi);
void broadwell_fill_pei_data(struct pei_data *pei_data);
void mainboard_fill_pei_data(struct pei_data *pei_data);
void mainboard_fill_spd_data(struct pei_data *pei_data);
void fill_spd_for_index(uint8_t spd[], unsigned int spd_index);
void copy_spd(struct pei_data *pei_data, struct spd_info *spdi);
#endif

23
src/soc/intel/broadwell/raminit.c
View File

@@ -183,9 +183,9 @@ static void setup_sdram_meminfo(struct pei_data *pei_data)
* 2 = disable dimm 1 on channel
* 3 = disable dimm 0+1 on channel
*/
static int make_channel_disabled_mask(const struct pei_data *pd, int ch)
static int make_channel_disabled_mask(const struct spd_info *spdi, int ch)
{
return (!pd->spd_addresses[ch + ch] << 0) | (!pd->spd_addresses[ch + ch + 1] << 1);
return (!spdi->addresses[ch + ch] << 0) | (!spdi->addresses[ch + ch + 1] << 1);
}
void perform_raminit(const struct chipset_power_state *const power_state)
@@ -195,15 +195,22 @@ void perform_raminit(const struct chipset_power_state *const power_state)
struct pei_data pei_data = { 0 };
mainboard_fill_pei_data(&pei_data);
mainboard_fill_spd_data(&pei_data);
/* Obtain the SPD addresses from mainboard code */
struct spd_info spdi = { 0 };
mb_get_spd_map(&spdi);
if (CONFIG(HAVE_SPD_IN_CBFS))
copy_spd(&pei_data, &spdi);
/* Calculate unimplemented DIMM slots for each channel */
pei_data.dimm_channel0_disabled = make_channel_disabled_mask(&pei_data, 0);
pei_data.dimm_channel1_disabled = make_channel_disabled_mask(&pei_data, 1);
pei_data.dimm_channel0_disabled = make_channel_disabled_mask(&spdi, 0);
pei_data.dimm_channel1_disabled = make_channel_disabled_mask(&spdi, 1);
for (size_t i = 0; i < ARRAY_SIZE(pei_data.spd_addresses); i++) {
const uint8_t addr = pei_data.spd_addresses[i];
pei_data.spd_addresses[i] = addr == SPD_MEMORY_DOWN ? 0 : addr;
/* MRC expects left-aligned SMBus addresses, and 0 for memory-down */
for (size_t i = 0; i < ARRAY_SIZE(spdi.addresses); i++) {
const uint8_t addr = spdi.addresses[i];
pei_data.spd_addresses[i] = addr == SPD_MEMORY_DOWN ? 0 : addr << 1;
}
post_code(0x32);

17
src/soc/intel/broadwell/spd.c
View File

@@ -17,6 +17,8 @@
#define SPD_PART_OFF 128
#define SPD_PART_LEN 18
#define SPD_LEN 256
static void print_spd_info(uint8_t spd[])
{
const int spd_banks[8] = { 8, 16, 32, 64, -1, -1, -1, -1 };
@@ -67,12 +69,12 @@ static void print_spd_info(uint8_t spd[])
}
}
void fill_spd_for_index(uint8_t spd[], unsigned int spd_index)
void copy_spd(struct pei_data *pei_data, struct spd_info *spdi)
{
size_t spd_file_len;
uint8_t *spd_file = cbfs_map("spd.bin", &spd_file_len);
printk(BIOS_DEBUG, "SPD index %d\n", spd_index);
printk(BIOS_DEBUG, "SPD index %d\n", spdi->spd_index);
if (!spd_file)
die("SPD data not found.");
@@ -80,16 +82,21 @@ void fill_spd_for_index(uint8_t spd[], unsigned int spd_index)
if (spd_file_len < SPD_LEN)
die("Missing SPD data.");
if (spd_file_len < ((spd_index + 1) * SPD_LEN)) {
if (spd_file_len < ((spdi->spd_index + 1) * SPD_LEN)) {
printk(BIOS_ERR, "SPD index override to 0 - old hardware?\n");
spd_index = 0;
spdi->spd_index = 0;
}
memcpy(spd, spd_file + (spd_index * SPD_LEN), SPD_LEN);
uint8_t *const spd = spd_file + (spdi->spd_index * SPD_LEN);
/* Make sure a valid SPD was found */
if (spd[0] == 0)
die("Invalid SPD data.");
print_spd_info(spd);
for (size_t i = 0; i < ARRAY_SIZE(spdi->addresses); i++) {
if (spdi->addresses[i] == SPD_MEMORY_DOWN)
memcpy(pei_data->spd_data[i / 2][i % 2], spd, SPD_LEN);
}
}