diff options
author | Paul Menzel <paulepanter@users.sourceforge.net> | 2013-04-23 14:40:23 +0200 |
---|---|---|
committer | Aaron Durbin <adurbin@google.com> | 2013-05-07 22:40:50 +0200 |
commit | ddddf15ca359e932ed2e61e9a6dcec77ed2d4411 (patch) | |
tree | 2425e1988041bd2dd02cad1d6e067aaec473733d /src | |
parent | 1b3e176468213747188c8979a505a4dd8b83f0bd (diff) |
Intel 82801Gx: LPC: Unify I/O APIC setup
Remove local copies of reading and writing I/O APIC registers by
using already available functions.
This change is similar to
commit db4f875a412e6c41f48a86a79b72465f6cd81635
Author: Kyösti Mälkki <kyosti.malkki@gmail.com>
Date: Tue Jan 31 17:24:12 2012 +0200
IOAPIC: Divide setup_ioapic() in two parts.
Reviewed-on: http://review.coreboot.org/300
and
commit e614353194c712a40aa8444a530b2062876eabe3
Author: Kyösti Mälkki <kyosti.malkki@gmail.com>
Date: Tue Feb 26 17:24:41 2013 +0200
Unify setting 82801a/b/c/d IOAPIC ID
Reviewed-on: http://review.coreboot.org/2532
and uses `io_apic_read()` and `io_apic_write()` too.
As commented by Aaron Durbin, a separate `i82801gx_enable_acpi()` is
not needed: “The existing code path *in this file* is about enabling
the io apic.” [1].
[1] http://review.coreboot.org/#/c/3182/4/src/southbridge/intel/lynxpoint/lpc.c
Change-Id: I104a2d9c2898da14d26f8f2992d5a065ad640356
Signed-off-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-on: http://review.coreboot.org/3181
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@google.com>
Diffstat (limited to 'src')
-rw-r--r-- | src/southbridge/intel/i82801gx/lpc.c | 42 |
1 files changed, 14 insertions, 28 deletions
diff --git a/src/southbridge/intel/i82801gx/lpc.c b/src/southbridge/intel/i82801gx/lpc.c index 777a6d772f..9285080f19 100644 --- a/src/southbridge/intel/i82801gx/lpc.c +++ b/src/southbridge/intel/i82801gx/lpc.c @@ -39,37 +39,23 @@ typedef struct southbridge_intel_i82801gx_config config_t; -static void i82801gx_enable_apic(struct device *dev) +/** + * Set miscellanous static southbridge features. + * + * @param dev PCI device with I/O APIC control registers + */ +static void i82801gx_enable_ioapic(struct device *dev) { - int i; - u32 reg32; - volatile u32 *ioapic_index = (volatile u32 *)(IO_APIC_ADDR); - volatile u32 *ioapic_data = (volatile u32 *)(IO_APIC_ADDR + 0x10); - - /* Enable ACPI I/O and power management. - * Set SCI IRQ to IRQ9 - */ + /* Enable ACPI I/O range decode */ pci_write_config8(dev, ACPI_CNTL, ACPI_EN); - *ioapic_index = 0; - *ioapic_data = (2 << 24); - - *ioapic_index = 0; - reg32 = *ioapic_data; - printk(BIOS_DEBUG, "Southbridge APIC ID = %x\n", (reg32 >> 24) & 0x0f); - if (reg32 != (2 << 24)) - die("APIC Error\n"); - - printk(BIOS_SPEW, "Dumping IOAPIC registers\n"); - for (i=0; i<3; i++) { - *ioapic_index = i; - printk(BIOS_SPEW, " reg 0x%04x:", i); - reg32 = *ioapic_data; - printk(BIOS_SPEW, " 0x%08x\n", reg32); - } + set_ioapic_id(IO_APIC_ADDR, 0x02); - *ioapic_index = 3; /* Select Boot Configuration register. */ - *ioapic_data = 1; /* Use Processor System Bus to deliver interrupts. */ + /* + * Select Boot Configuration register (0x03) and + * use Processor System Bus (0x01) to deliver interrupts. + */ + io_apic_write(IO_APIC_ADDR, 0x03, 0x01); } static void i82801gx_enable_serial_irqs(struct device *dev) @@ -422,7 +408,7 @@ static void lpc_init(struct device *dev) pci_write_config16(dev, PCI_COMMAND, 0x000f); /* IO APIC initialization. */ - i82801gx_enable_apic(dev); + i82801gx_enable_ioapic(dev); i82801gx_enable_serial_irqs(dev); |