lpc_util.c File Reference

#include <assert.h>
#include <stdint.h>
#include <device/device.h>
#include <device/pci_ops.h>
#include <device/pci_def.h>
#include <amdblocks/acpimmio.h>
#include <amdblocks/lpc.h>
#include <soc/iomap.h>
#include <soc/lpc.h>
#include <soc/southbridge.h>

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Data Structures
struct	wide_io_ioport_and_bits

Macros
#define	_LPCB_DEV   pcidev_on_root(0x14, 0x3)

Functions
uint16_t	lpc_wideio_size (int index)
	Find the size of a particular wide IO. More...
int	lpc_find_wideio_range (uint16_t start, uint16_t size)
	Identify if any LPC wide IO is covering the IO range. More...
int	lpc_set_wideio_range (uint16_t start, uint16_t size)
	Program a LPC wide IO to support an IO range. More...
void	lpc_enable_port80 (void)
void	lpc_enable_sio_decode (const bool addr)
void	lpc_enable_decode (uint32_t decodes)
void	lpc_disable_decodes (void)
uintptr_t	lpc_spibase (void)
void	lpc_tpm_decode (void)
void	lpc_tpm_decode_spi (void)
void	lpc_enable_rom (void)
void	lpc_enable_spi_prefetch (void)
void	lpc_disable_spi_rom_sharing (void)
uintptr_t	lpc_get_spibase (void)
void	lpc_set_spibase (uint32_t base)
void	lpc_enable_spi_rom (uint32_t enable)
static void	lpc_enable_controller (void)
void	lpc_early_init (void)

Variables
static const struct wide_io_ioport_and_bits	wio_io_en []

Macro Definition Documentation

_LPCB_DEV

#define _LPCB_DEV   pcidev_on_root(0x14, 0x3)

Definition at line 16 of file lpc_util.c.

Function Documentation

lpc_disable_decodes()

void lpc_disable_decodes

(

void

)

Definition at line 169 of file lpc_util.c.

References _LPCB_DEV, lpc_enable_decode(), LPC_IO_OR_MEM_DECODE_ENABLE, LPC_IO_PORT_DECODE_ENABLE, LPC_MEM_PORT0, LPC_MEM_PORT1, LPC_SYNC_TIMEOUT_COUNT_ENABLE, LPC_SYNC_TIMEOUT_COUNT_MASK, LPC_WIDEIO2_GENERIC_PORT, pci_read_config32(), and pci_write_config32().

Referenced by lpc_early_init().

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lpc_disable_spi_rom_sharing()

void lpc_disable_spi_rom_sharing

(

void

)

Definition at line 296 of file lpc_util.c.

References _LPCB_DEV, CONFIG, dead_code, EXT_ROM_SHARING_EN, LPC_PCI_CONTROL, pci_read_config8(), pci_write_config8(), and VW_ROM_SHARING_EN.

Referenced by fch_early_init().

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lpc_early_init()

void lpc_early_init

(

void

)

Definition at line 355 of file lpc_util.c.

References lpc_disable_decodes(), lpc_enable_controller(), lpc_set_spibase(), and SPI_BASE_ADDRESS.

Referenced by fch_pre_init().

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lpc_enable_controller()

static void lpc_enable_controller ( void  )

static

Definition at line 345 of file lpc_util.c.

References pm_io_read8(), pm_io_write8(), PM_LPC_ENABLE, and PM_LPC_GATING.

Referenced by lpc_early_init().

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lpc_enable_decode()

void lpc_enable_decode

(

uint32_t

decodes

)

Definition at line 160 of file lpc_util.c.

References _LPCB_DEV, LPC_IO_PORT_DECODE_ENABLE, and pci_write_config32().

Referenced by bootblock_mainboard_early_init(), lpc_disable_decodes(), and sb_lpc_decode().

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lpc_enable_port80()

void lpc_enable_port80

(

void

)

Definition at line 139 of file lpc_util.c.

References _LPCB_DEV, DECODE_IO_PORT_ENABLE4, LPC_IO_OR_MEM_DECODE_ENABLE, pci_read_config32(), and pci_write_config32().

Referenced by bootblock_fch_early_init(), and lpc_configure_decodes().

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lpc_enable_rom()

void lpc_enable_rom

(

void

)

Definition at line 250 of file lpc_util.c.

References _LPCB_DEV, LPC_IO_OR_MEM_DECODE_ENABLE, pci_read_config8(), pci_write_config16(), pci_write_config8(), ROM_ADDRESS_RANGE1_END, ROM_ADDRESS_RANGE1_START, ROM_ADDRESS_RANGE2_END, and ROM_ADDRESS_RANGE2_START.

Referenced by bootblock_fch_early_init().

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lpc_enable_sio_decode()

void lpc_enable_sio_decode

(

const bool

addr

)

Definition at line 148 of file lpc_util.c.

References _LPCB_DEV, addr, DECODE_ALTERNATE_SIO_ENABLE, DECODE_SIO_ENABLE, LPC_IO_OR_MEM_DECODE_ENABLE, LPC_SELECT_SIO_2E2F, pci_read_config32(), and pci_write_config32().

Referenced by bootblock_mainboard_early_init().

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lpc_enable_spi_prefetch()

void lpc_enable_spi_prefetch

(

void

)

Definition at line 287 of file lpc_util.c.

References _LPCB_DEV, LPC_ROM_DMA_EC_HOST_CONTROL, pci_read_config32(), pci_write_config32(), SPI_FROM_HOST_PREFETCH_EN, and SPI_FROM_USB_PREFETCH_EN.

Referenced by fch_spi_early_init().

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lpc_enable_spi_rom()

void lpc_enable_spi_rom

(

uint32_t

enable

)

Definition at line 330 of file lpc_util.c.

References _LPCB_DEV, pci_read_config32(), pci_write_config32(), SPI_BASE_ADDRESS_REGISTER, SPI_ROM_ALT_ENABLE, and SPI_ROM_ENABLE.

Referenced by fch_spi_early_init().

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lpc_find_wideio_range()

int lpc_find_wideio_range	(	uint16_t	start,
		uint16_t	size
	)

Identify if any LPC wide IO is covering the IO range.

Parameters

start	= start of IO range
size	= size of IO range

Returns

Index of wide IO covering the range or error

Definition at line 80 of file lpc_util.c.

References _LPCB_DEV, ARRAY_SIZE, lpc_wideio_size(), pci_read_config16(), WIDEIO_RANGE_ERROR, and wio_io_en.

Referenced by configure_child_lpc_windows().

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lpc_get_spibase()

uintptr_t lpc_get_spibase

(

void

)

Definition at line 309 of file lpc_util.c.

References _LPCB_DEV, ALIGN_DOWN, base, pci_read_config32(), SPI_BASE_ADDRESS_REGISTER, and SPI_BASE_ALIGNMENT.

Referenced by espi_get_bar(), and spi_get_bar().

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lpc_set_spibase()

void lpc_set_spibase

(

uint32_t

base

)

Definition at line 318 of file lpc_util.c.

References _LPCB_DEV, ALIGN_DOWN, base, pci_read_config32(), pci_write_config32(), SPI_BASE_ADDRESS_REGISTER, and SPI_BASE_ALIGNMENT.

Referenced by bootblock_fch_early_init(), and lpc_early_init().

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lpc_set_wideio_range()

int lpc_set_wideio_range	(	uint16_t	start,
		uint16_t	size
	)

Program a LPC wide IO to support an IO range.

Parameters

start	= start of range to be routed through wide IO
size	= size of range to be routed through wide IO

Returns

Index of wide IO register used or error

Definition at line 109 of file lpc_util.c.

References _LPCB_DEV, wide_io_ioport_and_bits::alt, ARRAY_SIZE, wide_io_ioport_and_bits::enable, LPC_ALT_WIDEIO_RANGE_ENABLE, LPC_IO_OR_MEM_DECODE_ENABLE, pci_read_config32(), pci_read_config8(), pci_write_config16(), pci_write_config32(), pci_write_config8(), WIDEIO_RANGE_ERROR, and wio_io_en.

Referenced by bootblock_mainboard_early_init(), configure_child_lpc_windows(), and early_ec_init().

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lpc_spibase()

uintptr_t lpc_spibase

(

void

)

Definition at line 185 of file lpc_util.c.

References _LPCB_DEV, base, pci_read_config32(), pci_write_config32(), SPI_BASE_ADDRESS, SPI_BASE_ADDRESS_REGISTER, SPI_BASE_RESERVED, SPI_PRESERVE_BITS, and SPI_ROM_ENABLE.

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lpc_tpm_decode()

void lpc_tpm_decode

(

void

)

Definition at line 214 of file lpc_util.c.

References _LPCB_DEV, LPC_TRUSTED_PLATFORM_MODULE, pci_read_config32(), pci_write_config32(), TPM_12_EN, TPM_LEGACY_EN, and value.

Referenced by lpc_tpm_decode_spi().

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lpc_tpm_decode_spi()

void lpc_tpm_decode_spi

(

void

)

Definition at line 229 of file lpc_util.c.

References _LPCB_DEV, lpc_tpm_decode(), pci_read_config32(), pci_write_config32(), ROUTE_TPM_2_SPI, and SPI_BASE_ADDRESS_REGISTER.

Referenced by bootblock_mainboard_init().

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lpc_wideio_size()

uint16_t lpc_wideio_size

(

int

index

)

Find the size of a particular wide IO.

Parameters

index

= index of desired wide IO

Returns

size of desired wide IO

Definition at line 54 of file lpc_util.c.

References _LPCB_DEV, wide_io_ioport_and_bits::alt, ARRAY_SIZE, LPC_ALT_WIDEIO_RANGE_ENABLE, LPC_IO_OR_MEM_DECODE_ENABLE, pci_read_config32(), pci_read_config8(), and wio_io_en.

Referenced by configure_child_lpc_windows(), and lpc_find_wideio_range().

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Variable Documentation

wio_io_en

const struct wide_io_ioport_and_bits wio_io_en[]

static

Initial value:

= {
        {
                .enable = LPC_WIDEIO0_ENABLE,
                .port = LPC_WIDEIO_GENERIC_PORT,
                .alt = LPC_ALT_WIDEIO0_ENABLE
        },
        {
                .enable = LPC_WIDEIO1_ENABLE,
                .port = LPC_WIDEIO1_GENERIC_PORT,
                .alt = LPC_ALT_WIDEIO1_ENABLE
        },
        {
                .enable = LPC_WIDEIO2_ENABLE,
                .port = LPC_WIDEIO2_GENERIC_PORT,
                .alt = LPC_ALT_WIDEIO2_ENABLE
        }
}

Referenced by lpc_find_wideio_range(), lpc_set_wideio_range(), and lpc_wideio_size().