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soc/intel/apollolake: Implement UNCORE PRMRR get base and mask API 

Implement soc_get_uncore_prmmr_base_and_mask() API for APL/GLK

Change-Id: I57df1f0e8ff984f32de4efdc6ebd68be501b4799
Signed-off-by: Pratik Prajapati <pratikkumar.v.prajapati@intel.com>
Reviewed-on: https://review.coreboot.org/21244
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
This commit is contained in:
Pratik Prajapati 2017-08-28 15:11:49 -07:00 committed by Aaron Durbin
parent 82cdfa73d5
commit 738414586d
1 changed files with 47 additions and 0 deletions
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47
src/soc/intel/apollolake/systemagent.c
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@ -16,7 +16,10 @@
* GNU General Public License for more details. * GNU General Public License for more details.
*/ */
#include <cpu/cpu.h>
#include <console/console.h>
#include <device/device.h> #include <device/device.h>
#include <fsp/util.h>
#include <intelblocks/systemagent.h> #include <intelblocks/systemagent.h>
#include <soc/iomap.h> #include <soc/iomap.h>
#include <soc/systemagent.h> #include <soc/systemagent.h>
@ -38,3 +41,47 @@ void soc_add_fixed_mmio_resources(struct device *dev, int *index)
sa_add_fixed_mmio_resources(dev, index, soc_fixed_resources, sa_add_fixed_mmio_resources(dev, index, soc_fixed_resources,
ARRAY_SIZE(soc_fixed_resources)); ARRAY_SIZE(soc_fixed_resources));
} }
int soc_get_uncore_prmmr_base_and_mask(uint64_t *prmrr_base,
uint64_t *prmrr_mask)
{
const void *hob;
size_t hob_size, prmrr_size;
uint64_t phys_address_mask;
const uint8_t prmrr_phys_base_guid[16] = {
0x38, 0x3a, 0x81, 0x9f, 0xb0, 0x6f, 0xa7, 0x4f,
0xaf, 0x79, 0x8a, 0x4e, 0x74, 0xdd, 0x48, 0x33
};
const uint8_t prmrr_size_guid[16] = {
0x44, 0xed, 0x0b, 0x99, 0x4e, 0x9b, 0x26, 0x42,
0xa5, 0x97, 0x28, 0x36, 0x76, 0x6b, 0x5c, 0x41
};
hob = fsp_find_extension_hob_by_guid(prmrr_phys_base_guid,
&hob_size);
if (!hob) {
printk(BIOS_ERR, "Failed to locate PRMRR base hob\n");
return -1;
}
if (hob_size != sizeof(uint64_t)) {
printk(BIOS_ERR, "Incorrect PRMRR base hob size\n");
return -1;
}
*prmrr_base = *(uint64_t *) hob;
hob = fsp_find_extension_hob_by_guid(prmrr_size_guid,
&hob_size);
if (!hob) {
printk(BIOS_ERR, "Failed to locate PRMRR size hob\n");
return -1;
}
if (hob_size != sizeof(uint64_t)) {
printk(BIOS_ERR, "Incorrect PRMRR base hob size\n");
return -1;
}
prmrr_size = *(uint64_t *) hob;
phys_address_mask = (1ULL << cpu_phys_address_size()) - 1;
*prmrr_mask = phys_address_mask & ~(uint64_t)(prmrr_size - 1);
return 0;
}