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/* SPDX-License-Identifier: GPL-2.0-only */
#include <arch/cpu.h>
#include <console/console.h>
#include <FspGuids.h>
#include <fsp/util.h>
#include <misc_data.h>
#include <soc/cpu.h>
#include <soc/soc_util.h>
#include <types.h>
/*
* The Zen/Zen+ based APUs can be RV (sometimes called RV1), PCO or RV2 silicon. RV2 has less
* PCIe, USB3 and DisplayPort connectivity than RV(1) or PCO. A Picasso SoC is always PCO
* silicon, a Dali SoC can either be RV2 or fused-down PCO silicon that has the same
* connectivity as the RV2 one and Pollock is always RV2 silicon. Picasso and Dali are in a FP5
* package while Pollock is in the smaller FT5 package.
*/
#define SOCKET_TYPE_SHIFT 28
#define SOCKET_TYPSE_MASK (0xf << SOCKET_TYPE_SHIFT)
/* some Pollock engineering samples return the wrong socket type */
enum socket_type get_socket_type(void)
{
uint32_t ebx = cpuid_ebx(0x80000001);
ebx = (ebx & SOCKET_TYPSE_MASK) >> SOCKET_TYPE_SHIFT;
return (enum socket_type)ebx;
}
void print_socket_type(void)
{
enum socket_type socket = get_socket_type();
printk(BIOS_INFO, "Socket type: ");
switch (socket) {
case SOCKET_FP5:
printk(BIOS_INFO, "FP5\n");
break;
case SOCKET_AM4:
printk(BIOS_INFO, "AM4\n");
break;
case SOCKET_FT5:
printk(BIOS_INFO, "FT5\n");
break;
default:
printk(BIOS_INFO, "unknown\n");
}
}
/* returns 0 in case or errors */
static uint32_t get_internal_silicon_type(void)
{
static uint32_t silicon_type;
size_t hob_size = 0;
const struct picasso_misc_data *hob;
if (silicon_type)
return silicon_type;
hob = fsp_find_extension_hob_by_guid(PICASSO_MISC_DATA_HOB_GUID.b, &hob_size);
if (hob == NULL || hob_size == 0) {
printk(BIOS_ERR, "Couldn't find Picasso misc data HOB.\n");
return 0;
}
if (hob->version != PICASSO_MISC_DATA_VERSION) {
printk(BIOS_ERR, "Unexpected Picasso misc data HOB version.\n");
return 0;
}
silicon_type = hob->silicon_id;
printk(BIOS_DEBUG, "Silicon ID = 0x%x\n", silicon_type);
return silicon_type;
}
#define SILICON_IS_MYSTERY_MEAT (1 << 31)
#define SILICON_IS_RV2 (1 << 30)
static bool is_rv2_silicon(void)
{
return get_internal_silicon_type() & SILICON_IS_RV2;
}
static bool is_mystery_silicon(void)
{
return get_internal_silicon_type() & SILICON_IS_MYSTERY_MEAT;
}
static bool is_fam17_1x(void)
{
/* mask lower model number nibble and stepping */
return cpuid_eax(1) >> 8 == PICASSO_B1_CPUID >> 8;
}
static bool is_fam17_11(void)
{
/* only mask stepping */
return cpuid_eax(1) >> 4 == RAVEN1_B0_CPUID >> 4;
}
static bool is_fam17_18(void)
{
/* only mask stepping */
return cpuid_eax(1) >> 4 == PICASSO_B1_CPUID >> 4;
}
static bool is_fam17_2x(void)
{
/* mask lower model number nibble and stepping */
return cpuid_eax(1) >> 8 == RAVEN2_A1_CPUID >> 8;
}
static bool is_fam17_20(void)
{
/* only mask stepping */
return cpuid_eax(1) >> 4 == RAVEN2_A1_CPUID >> 4;
}
enum silicon_type get_silicon_type(void)
{
/*
* RV2 is fam17_20, but might return a fam17_1x CPUID in the is_mystery_silicon() case.
* is_rv2_silicon() has the correct information, but requires the HOB to be present.
*/
if (is_fam17_20() || is_rv2_silicon())
return SILICON_RV2;
if (is_fam17_18() && !is_rv2_silicon())
return SILICON_PCO;
if (is_fam17_11() && !is_rv2_silicon())
return SILICON_RV1;
/* some cases might still be missing */
return SILICON_UNKNOWN;
}
/* some Pollock engineering samples return the wrong socket type and get detected as Dali */
enum soc_type get_soc_type(void)
{
switch (get_socket_type()) {
case SOCKET_FP5:
if (is_fam17_1x() && !is_mystery_silicon())
return SOC_PICASSO;
if (is_fam17_2x() || (is_fam17_1x() && is_mystery_silicon()))
return SOC_DALI;
break;
case SOCKET_FT5:
/* add is_fam17_20() CPUID sanity check here? */
return SOC_POLLOCK;
break;
case SOCKET_AM4:
/* AM4 SoC type detection logic not implemented */
break;
}
return SOC_UNKNOWN;
}
void print_silicon_type(void)
{
const enum silicon_type silicon = get_silicon_type();
printk(BIOS_INFO, "Silicon type: ");
switch (silicon) {
case SILICON_RV1:
printk(BIOS_INFO, "RV1\n");
break;
case SILICON_PCO:
printk(BIOS_INFO, "PCO\n");
break;
case SILICON_RV2:
printk(BIOS_INFO, "RV2\n");
break;
default:
printk(BIOS_INFO, "unknown\n");
}
}
void print_soc_type(void)
{
const enum soc_type soc = get_soc_type();
printk(BIOS_INFO, "SoC type: ");
switch (soc) {
case SOC_PICASSO:
printk(BIOS_INFO, "Picasso\n");
break;
case SOC_DALI:
printk(BIOS_INFO, "Dali\n");
break;
case SOC_POLLOCK:
printk(BIOS_INFO, "Pollock\n");
break;
default:
printk(BIOS_INFO, "unknown\n");
}
}
bool soc_is_reduced_io_sku(void)
{
return get_silicon_type() == SILICON_RV2 || get_soc_type() == SOC_DALI;
}
bool soc_is_raven2(void)
{
return get_silicon_type() == SILICON_RV2;
}
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