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soc/intel/skylake: Display FPF status of CSME 

Field Programmable Fuses (FPF) status maintained by
CSME in bits 30:31 of FWSTS6 for Skylake and Kabylake.
FPF committed means CSME has blown the fuses.

Change-Id: If63c7874e6c894749df8100426faca0ad432384b
Signed-off-by: Pratik Prajapati <pratikkumar.v.prajapati@intel.com>
Reviewed-on: https://review.coreboot.org/19747
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Philippe Mathieu-Daudé <philippe.mathieu.daude@gmail.com>
This commit is contained in:
Pratik Prajapati 2017-05-17 14:28:25 -07:00 committed by Aaron Durbin
parent f714965e8d
commit 4a907c79a2
2 changed files with 26 additions and 0 deletions
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12
src/soc/intel/skylake/include/soc/me.h
View File

@ -186,6 +186,18 @@ union me_hfs3 {
} __attribute__ ((packed)) fields;
};
#define PCI_ME_HFSTS6 0x6c
#define ME_HFS6_FPF_NOT_COMMITTED 0x0
#define ME_HFS6_FPF_ERROR 0x2
union me_hfs6 {
u32 data;
struct {
u32 reserved1: 30;
u32 fpf_nvars: 2;
} __attribute__ ((packed)) fields;
};
/*
* Management Engine MMIO registers
*/

14
src/soc/intel/skylake/me.c
View File

@ -224,10 +224,12 @@ void intel_me_status(void)
union me_hfs hfs;
union me_hfs2 hfs2;
union me_hfs3 hfs3;
union me_hfs6 hfs6;
hfs.data = me_read_config32(PCI_ME_HFSTS1);
hfs2.data = me_read_config32(PCI_ME_HFSTS2);
hfs3.data = me_read_config32(PCI_ME_HFSTS3);
hfs6.data = me_read_config32(PCI_ME_HFSTS6);
/* Check Current States */
printk(BIOS_DEBUG, "ME: FW Partition Table : %s\n",
@ -341,6 +343,18 @@ void intel_me_status(void)
hfs3.fields.fw_sku);
}
}
printk(BIOS_DEBUG, "ME: FPF status : ");
switch (hfs6.fields.fpf_nvars) {
case ME_HFS6_FPF_NOT_COMMITTED:
printk(BIOS_DEBUG, "unfused\n");
break;
case ME_HFS6_FPF_ERROR:
printk(BIOS_DEBUG, "unknown\n");
break;
default:
printk(BIOS_DEBUG, "fused\n");
}
}
/*