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lynxpoint: Factor out PIRQ routing from devicetree

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All boards disable PIRQs. They aren't used on modern OSes anyway.

Change-Id: I1351fd4a3910e8cf2e9afe51dc2e82c7464de403
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/43863
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
This commit is contained in:
Angel Pons
2020-07-25 14:03:40 +02:00
parent 172bcc835f
commit 9f78127b61
9 changed files with 16 additions and 88 deletions
Download Patch File Download Diff File Expand all files Collapse all files

13
src/southbridge/intel/lynxpoint/chip.h
View File

@@ -6,19 +6,6 @@
#include <stdint.h>
struct southbridge_intel_lynxpoint_config {
/**
* Interrupt Routing configuration
* If bit7 is 1, the interrupt is disabled.
*/
uint8_t pirqa_routing;
uint8_t pirqb_routing;
uint8_t pirqc_routing;
uint8_t pirqd_routing;
uint8_t pirqe_routing;
uint8_t pirqf_routing;
uint8_t pirqg_routing;
uint8_t pirqh_routing;
/**
* GPI Routing configuration for LynxPoint-H
*

30
src/southbridge/intel/lynxpoint/lpc.c
View File

@@ -96,18 +96,18 @@ static void pch_enable_serial_irqs(struct device *dev)
static void pch_pirq_init(struct device *dev)
{
struct device *irq_dev;
/* Get the chip configuration */
config_t *config = dev->chip_info;
pci_write_config8(dev, PIRQA_ROUT, config->pirqa_routing);
pci_write_config8(dev, PIRQB_ROUT, config->pirqb_routing);
pci_write_config8(dev, PIRQC_ROUT, config->pirqc_routing);
pci_write_config8(dev, PIRQD_ROUT, config->pirqd_routing);
const uint8_t pirq = 0x80;
pci_write_config8(dev, PIRQE_ROUT, config->pirqe_routing);
pci_write_config8(dev, PIRQF_ROUT, config->pirqf_routing);
pci_write_config8(dev, PIRQG_ROUT, config->pirqg_routing);
pci_write_config8(dev, PIRQH_ROUT, config->pirqh_routing);
pci_write_config8(dev, PIRQA_ROUT, pirq);
pci_write_config8(dev, PIRQB_ROUT, pirq);
pci_write_config8(dev, PIRQC_ROUT, pirq);
pci_write_config8(dev, PIRQD_ROUT, pirq);
pci_write_config8(dev, PIRQE_ROUT, pirq);
pci_write_config8(dev, PIRQF_ROUT, pirq);
pci_write_config8(dev, PIRQG_ROUT, pirq);
pci_write_config8(dev, PIRQH_ROUT, pirq);
/* Eric Biederman once said we should let the OS do this.
* I am not so sure anymore he was right.
@@ -122,10 +122,12 @@ static void pch_pirq_init(struct device *dev)
int_pin = pci_read_config8(irq_dev, PCI_INTERRUPT_PIN);
switch (int_pin) {
case 1: /* INTA# */ int_line = config->pirqa_routing; break;
case 2: /* INTB# */ int_line = config->pirqb_routing; break;
case 3: /* INTC# */ int_line = config->pirqc_routing; break;
case 4: /* INTD# */ int_line = config->pirqd_routing; break;
case 1: /* INTA# */
case 2: /* INTB# */
case 3: /* INTC# */
case 4: /* INTD# */
int_line = pirq;
break;
}
if (!int_line)