diff options
| author | Subrata Banik <subrata.banik@intel.com> | 2017-11-09 15:04:09 +0530 |
|---|---|---|
| committer | Aaron Durbin <adurbin@chromium.org> | 2017-11-10 16:37:38 +0000 |
| commit | 05e06cd0bef0d85de2466cfccf7c8ce375f950ee (patch) | |
| tree | 6f17ea57c10bf91baa3337cef14c845aaee73ebd /src | |
| parent | 330dc10cfd956df91855593b6f33b502c6883c55 (diff) | |
soc/intel/common: Fix CSE common code to accomodate Skylake/Kabylake
This patch ensures Skylake/Kabylake soc can make use of common
CSE code in order to perform global reset using HECI interface.
TEST=Build and boot on soraka/eve/reef/cnl-rvp
Change-Id: I49b89be8106a19cde1eb9b488ac660637537ad71
Signed-off-by: Subrata Banik <subrata.banik@intel.com>
Reviewed-on: https://review.coreboot.org/22394
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Diffstat (limited to 'src')
| -rw-r--r-- | src/soc/intel/common/block/cse/cse.c | 25 |
1 files changed, 22 insertions, 3 deletions
diff --git a/src/soc/intel/common/block/cse/cse.c b/src/soc/intel/common/block/cse/cse.c index 617684c0f0..53c4a81959 100644 --- a/src/soc/intel/common/block/cse/cse.c +++ b/src/soc/intel/common/block/cse/cse.c @@ -14,6 +14,7 @@ */ #include <arch/early_variables.h> +#include <assert.h> #include <commonlib/helpers.h> #include <console/console.h> #include <delay.h> @@ -21,13 +22,11 @@ #include <device/pci_ids.h> #include <device/pci_ops.h> #include <intelblocks/cse.h> +#include <soc/iomap.h> #include <soc/pci_devs.h> #include <string.h> #include <timer.h> -/* default window for early boot, must be at least 12 bytes in size */ -#define HECI1_BASE_ADDRESS 0xfed1a000 - /* Wait up to 15 sec for HECI to get ready */ #define HECI_DELAY_READY (15 * 1000) /* Wait up to 100 usec between circullar buffer polls */ @@ -108,15 +107,35 @@ void heci_init(uintptr_t tempbar) cse->sec_bar = tempbar; } +/* Get HECI BAR 0 from PCI configuration space */ +static uint32_t get_cse_bar(void) +{ + uintptr_t bar; + + bar = pci_read_config32(PCH_DEV_CSE, PCI_BASE_ADDRESS_0); + assert(bar != 0); + /* + * Bits 31-12 are the base address as per EDS for SPI, + * Don't care about 0-11 bit + */ + return bar & ~PCI_BASE_ADDRESS_MEM_ATTR_MASK; +} + static uint32_t read_bar(uint32_t offset) { struct cse_device *cse = car_get_var_ptr(&g_cse); + /* Reach PCI config space to get BAR incase CAR global not available */ + if (!cse->sec_bar) + cse->sec_bar = get_cse_bar(); return read32((void *)(cse->sec_bar + offset)); } static void write_bar(uint32_t offset, uint32_t val) { struct cse_device *cse = car_get_var_ptr(&g_cse); + /* Reach PCI config space to get BAR incase CAR global not available */ + if (!cse->sec_bar) + cse->sec_bar = get_cse_bar(); return write32((void *)(cse->sec_bar + offset), val); } |