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/* SPDX-License-Identifier: GPL-2.0-only */
#include <arch/cpu.h>
#include <console/console.h>
#include <fsp/util.h>
static bool use_fsp_v1(void)
{
/*
* Per the Comet Lake FSP documentation, differentiate Comet Lake v1/v2
* by CPUID. CML v1 has eax 0x000A0660 or 0x000806EC, CML v2 has
* 0x000A0661.
*/
uint32_t cpuid = cpu_get_cpuid();
switch (cpuid) {
case 0x000A0660:
case 0x000806EC:
printk(BIOS_INFO, "CPUID %08X is Comet Lake v1\n", cpuid);
return true;
case 0x000A0661:
printk(BIOS_INFO, "CPUID %08X is Comet Lake v2\n", cpuid);
return false;
default:
/*
* It's unlikely any new Comet Lake SKUs would be added
* at this point, but guess CML v2 rather than failing
* to boot entirely.
*/
printk(BIOS_ERR, "CPUID %08X is unknown, guessing Comet Lake v2\n",
cpuid);
return false;
}
}
const char *soc_select_fsp_m_cbfs(void)
{
return use_fsp_v1() ? CONFIG_FSP_M_CBFS : CONFIG_FSP_M_CBFS_2;
}
const char *soc_select_fsp_s_cbfs(void)
{
return use_fsp_v1() ? CONFIG_FSP_S_CBFS : CONFIG_FSP_S_CBFS_2;
}
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