From 1366e4438d07c2de905454421e18d1e5f68de47d Mon Sep 17 00:00:00 2001 From: Subrata Banik Date: Tue, 29 Sep 2020 13:55:50 +0530 Subject: soc/intel: Move pch_enable_ioapic() to common code List of changes: 1. Move pch_enable_ioapic() into common block code. 2. Remove redundant LPC functions from SoC directory and refer from block/lpc directory. TEST=Able to build and boot hatch and tglrvp platform without seeing any functional impact. Change-Id: I2a6afc1da50c8ee5bccda7f5671b516dc31fe023 Signed-off-by: Subrata Banik Reviewed-on: https://review.coreboot.org/c/coreboot/+/45787 Tested-by: build bot (Jenkins) Reviewed-by: Angel Pons --- src/soc/intel/common/block/lpc/lpc_lib.c | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) (limited to 'src/soc/intel/common/block/lpc') diff --git a/src/soc/intel/common/block/lpc/lpc_lib.c b/src/soc/intel/common/block/lpc/lpc_lib.c index ff44cc1a67..87ee11056e 100644 --- a/src/soc/intel/common/block/lpc/lpc_lib.c +++ b/src/soc/intel/common/block/lpc/lpc_lib.c @@ -2,6 +2,7 @@ #define __SIMPLE_DEVICE__ +#include #include #include #include @@ -292,3 +293,27 @@ void lpc_disable_clkrun(void) 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 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); +} -- cgit v1.2.3