Subrata Banik has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/45787 )
Change subject: soc/intel/common/block/lpc: Move common LPC function into block/lpc ......................................................................
soc/intel/common/block/lpc: Move common LPC function into block/lpc
This patch moves 3 common LPC functions into common block code.
Change-Id: I2a6afc1da50c8ee5bccda7f5671b516dc31fe023 Signed-off-by: Subrata Banik subrata.banik@intel.com --- M src/soc/intel/common/block/include/intelblocks/lpc_lib.h M src/soc/intel/common/block/lpc/lpc_lib.c 2 files changed, 117 insertions(+), 0 deletions(-)
git pull ssh://review.coreboot.org:29418/coreboot refs/changes/87/45787/1
diff --git a/src/soc/intel/common/block/include/intelblocks/lpc_lib.h b/src/soc/intel/common/block/include/intelblocks/lpc_lib.h index ff4ba1a..65e2c0a 100644 --- a/src/soc/intel/common/block/include/intelblocks/lpc_lib.h +++ b/src/soc/intel/common/block/include/intelblocks/lpc_lib.h @@ -107,5 +107,15 @@ /* Add resource into LPC PCI device space */ void pch_lpc_add_new_resource(struct device *dev, uint8_t offset, uintptr_t base, size_t size, unsigned long flags); +/* Enable PCH IOAPIC */ +void lpc_pch_enable_ioapic(void); +/* Retrieve and setup PCH LPC interrupt routing. */ +void lpc_pch_pirq_init(void); +/* + * LPC MISC programming + * 1. Setup NMI on errors, disable SERR + * 2. Disable NMI sources + */ +void lpc_pch_misc_init(void);
#endif /* _SOC_COMMON_BLOCK_LPC_LIB_H_ */ diff --git a/src/soc/intel/common/block/lpc/lpc_lib.c b/src/soc/intel/common/block/lpc/lpc_lib.c index ff44cc1..538a81e 100644 --- a/src/soc/intel/common/block/lpc/lpc_lib.c +++ b/src/soc/intel/common/block/lpc/lpc_lib.c @@ -2,13 +2,16 @@
#define __SIMPLE_DEVICE__
+#include <arch/ioapic.h> #include <assert.h> #include <console/console.h> #include <device/pci.h> #include <device/pci_ops.h> +#include <intelblocks/itss.h> #include <intelblocks/lpc_lib.h> #include <lib.h> #include "lpc_def.h" +#include <soc/irq.h> #include <soc/pci_devs.h>
uint16_t lpc_enable_fixed_io_ranges(uint16_t io_enables) @@ -292,3 +295,107 @@ const uint8_t pcctl = pci_read_config8(PCH_DEV_LPC, LPC_PCCTL); pci_write_config8(PCH_DEV_LPC, LPC_PCCTL, pcctl & ~LPC_PCCTL_CLKRUN_EN); } + +/* Enable PCH IOAPIC */ +void lpc_pch_enable_ioapic(void) +{ + uint32_t reg32; + /* PCH-LP has 120 redirection entries */ + const int redir_entries = 120; + + set_ioapic_id((void *)IO_APIC_ADDR, 0x02); + + /* affirm full set of redirection table entries ("write once") */ + reg32 = io_apic_read((void *)IO_APIC_ADDR, 0x01); + + reg32 &= ~0x00ff0000; + reg32 |= (redir_entries - 1) << 16; + + io_apic_write((void *)IO_APIC_ADDR, 0x01, reg32); + + /* + * Select Boot Configuration register (0x03) and + * use Processor System Bus (0x01) to deliver interrupts. + */ + io_apic_write((void *)IO_APIC_ADDR, 0x03, 0x01); +} + +/* + * PIRQ[n]_ROUT[3:0] - PIRQ Routing Control + * 0x00 - 0000 = Reserved + * 0x01 - 0001 = Reserved + * 0x02 - 0010 = Reserved + * 0x03 - 0011 = IRQ3 + * 0x04 - 0100 = IRQ4 + * 0x05 - 0101 = IRQ5 + * 0x06 - 0110 = IRQ6 + * 0x07 - 0111 = IRQ7 + * 0x08 - 1000 = Reserved + * 0x09 - 1001 = IRQ9 + * 0x0A - 1010 = IRQ10 + * 0x0B - 1011 = IRQ11 + * 0x0C - 1100 = IRQ12 + * 0x0D - 1101 = Reserved + * 0x0E - 1110 = IRQ14 + * 0x0F - 1111 = IRQ15 + * PIRQ[n]_ROUT[7] - PIRQ Routing Control + * 0x80 - The PIRQ is not routed. + */ +void lpc_pch_pirq_init(void) +{ + const struct device *irq_dev; + uint8_t pch_interrupt_routing[MAX_PXRC_CONFIG]; + + pch_interrupt_routing[0] = PCH_IRQ11; + pch_interrupt_routing[1] = PCH_IRQ10; + pch_interrupt_routing[2] = PCH_IRQ11; + pch_interrupt_routing[3] = PCH_IRQ11; + pch_interrupt_routing[4] = PCH_IRQ11; + pch_interrupt_routing[5] = PCH_IRQ11; + pch_interrupt_routing[6] = PCH_IRQ11; + pch_interrupt_routing[7] = PCH_IRQ11; + + itss_irq_init(pch_interrupt_routing); + + for (irq_dev = all_devices; irq_dev; irq_dev = irq_dev->next) { + uint8_t int_pin = 0, int_line = 0; + + if (!irq_dev->enabled || irq_dev->path.type != DEVICE_PATH_PCI) + continue; + + int_pin = pci_read_config8(PCI_BDF(irq_dev), PCI_INTERRUPT_PIN); + + switch (int_pin) { + case 1: /* INTA# */ + int_line = PCH_IRQ11; + break; + case 2: /* INTB# */ + int_line = PCH_IRQ10; + break; + case 3: /* INTC# */ + int_line = PCH_IRQ11; + break; + case 4: /* INTD# */ + int_line = PCH_IRQ11; + break; + } + + if (!int_line) + continue; + + pci_write_config8(PCI_BDF(irq_dev), PCI_INTERRUPT_LINE, int_line); + } +} + +/* LPC MISC programming */ +void lpc_pch_misc_init(void) +{ + uint8_t reg8; + + /* Setup NMI on errors, disable SERR */ + reg8 = (inb(0x61)) & 0xf0; + outb((reg8 | (1 << 2)), 0x61); + + /* Disable NMI sources */ + outb((1 << 7), 0x70); +}