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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2016 Intel Corp.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied wacbmem_entryanty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#define __SIMPLE_DEVICE__
#include <arch/io.h>
#include <console/console.h>
#include <soc/pci_devs.h>
#include <soc/reg_access.h>
static uint32_t *get_gpio_address(uint32_t reg_address)
{
uint32_t gpio_base_address;
/* Get the GPIO base address */
gpio_base_address = pci_read_config32(I2CGPIO_BDF, PCI_BASE_ADDRESS_1);
gpio_base_address &= ~PCI_BASE_ADDRESS_MEM_ATTR_MASK;
ASSERT (gpio_base_address != 0x00000000);
/* Return the GPIO register address */
return (uint32_t *)(gpio_base_address + reg_address);
}
void *get_i2c_address(void)
{
uint32_t gpio_base_address;
/* Get the GPIO base address */
gpio_base_address = pci_read_config32(I2CGPIO_BDF, PCI_BASE_ADDRESS_0);
gpio_base_address &= ~PCI_BASE_ADDRESS_MEM_ATTR_MASK;
ASSERT (gpio_base_address != 0x00000000);
/* Return the GPIO register address */
return (void *)gpio_base_address;
}
static uint16_t get_legacy_gpio_address(uint32_t reg_address)
{
uint32_t gpio_base_address;
/* Get the GPIO base address */
gpio_base_address = pci_read_config32(LPC_BDF, R_QNC_LPC_GBA_BASE);
ASSERT (gpio_base_address >= 0x80000000);
gpio_base_address &= B_QNC_LPC_GPA_BASE_MASK;
/* Return the GPIO register address */
return (uint16_t)(gpio_base_address + reg_address);
}
void mcr_write(uint8_t opcode, uint8_t port, uint32_t reg_address)
{
pci_write_config32(MC_BDF, QNC_ACCESS_PORT_MCR,
(opcode << QNC_MCR_OP_OFFSET)
| ((uint32_t)port << QNC_MCR_PORT_OFFSET)
| ((reg_address & QNC_MCR_MASK) << QNC_MCR_REG_OFFSET)
| QNC_MCR_BYTE_ENABLES);
}
uint32_t mdr_read(void)
{
return pci_read_config32(MC_BDF, QNC_ACCESS_PORT_MDR);
}
void mdr_write(uint32_t value)
{
pci_write_config32(MC_BDF, QNC_ACCESS_PORT_MDR, value);
}
void mea_write(uint32_t reg_address)
{
pci_write_config32(MC_BDF, QNC_ACCESS_PORT_MEA, reg_address
& QNC_MEA_MASK);
}
static uint32_t reg_gpio_read(uint32_t reg_address)
{
/* Read the GPIO register */
return *get_gpio_address(reg_address);
}
static void reg_gpio_write(uint32_t reg_address, uint32_t value)
{
/* Write the GPIO register */
*get_gpio_address(reg_address) = value;
}
uint32_t reg_legacy_gpio_read(uint32_t reg_address)
{
/* Read the legacy GPIO register */
return inl(get_legacy_gpio_address(reg_address));
}
void reg_legacy_gpio_write(uint32_t reg_address, uint32_t value)
{
/* Write the legacy GPIO register */
outl(value, get_legacy_gpio_address(reg_address));
}
uint32_t reg_rmu_temp_read(uint32_t reg_address)
{
/* Read the RMU temperature register */
mea_write(reg_address);
mcr_write(QUARK_OPCODE_READ, QUARK_NC_RMU_SB_PORT_ID, reg_address);
return mdr_read();
}
static void reg_rmu_temp_write(uint32_t reg_address, uint32_t value)
{
/* Write the RMU temperature register */
mea_write(reg_address);
mdr_write(value);
mcr_write(QUARK_OPCODE_WRITE, QUARK_NC_RMU_SB_PORT_ID, reg_address);
}
static uint32_t reg_soc_unit_read(uint32_t reg_address)
{
/* Read the temperature sensor register */
mea_write(reg_address);
mcr_write(QUARK_ALT_OPCODE_READ, QUARK_SCSS_SOC_UNIT_SB_PORT_ID,
reg_address);
return mdr_read();
}
static void reg_soc_unit_write(uint32_t reg_address, uint32_t value)
{
/* Write the temperature sensor register */
mea_write(reg_address);
mdr_write(value);
mcr_write(QUARK_ALT_OPCODE_WRITE, QUARK_SCSS_SOC_UNIT_SB_PORT_ID,
reg_address);
}
static uint32_t reg_usb_read(uint32_t reg_address)
{
/* Read the USB register */
mea_write(reg_address);
mcr_write(QUARK_ALT_OPCODE_READ, QUARK_SC_USB_AFE_SB_PORT_ID,
reg_address);
return mdr_read();
}
static void reg_usb_write(uint32_t reg_address, uint32_t value)
{
/* Write the USB register */
mea_write(reg_address);
mdr_write(value);
mcr_write(QUARK_ALT_OPCODE_WRITE, QUARK_SC_USB_AFE_SB_PORT_ID,
reg_address);
}
static uint64_t reg_read(struct reg_script_context *ctx)
{
const struct reg_script *step = ctx->step;
uint64_t value = 0;
switch (step->id) {
default:
printk(BIOS_ERR,
"ERROR - Unknown register set (0x%08x)!\n",
step->id);
ctx->display_features = REG_SCRIPT_DISPLAY_NOTHING;
return 0;
case GPIO_REGS:
ctx->display_prefix = "GPIO: ";
value = reg_gpio_read(step->reg);
break;
case LEG_GPIO_REGS:
ctx->display_prefix = "Legacy GPIO: ";
value = reg_legacy_gpio_read(step->reg);
break;
case RMU_TEMP_REGS:
ctx->display_prefix = "RMU TEMP";
value = reg_rmu_temp_read(step->reg);
break;
case SOC_UNIT_REGS:
ctx->display_prefix = "SOC Unit";
value = reg_soc_unit_read(step->reg);
break;
case USB_PHY_REGS:
ctx->display_prefix = "USB PHY";
value = reg_usb_read(step->reg);
break;
}
return value;
}
static void reg_write(struct reg_script_context *ctx)
{
const struct reg_script *step = ctx->step;
switch (step->id) {
default:
printk(BIOS_ERR,
"ERROR - Unknown register set (0x%08x)!\n",
step->id);
ctx->display_features = REG_SCRIPT_DISPLAY_NOTHING;
return;
case GPIO_REGS:
ctx->display_prefix = "GPIO: ";
reg_gpio_write(step->reg, (uint32_t)step->value);
break;
case LEG_GPIO_REGS:
ctx->display_prefix = "Legacy GPIO: ";
reg_legacy_gpio_write(step->reg, (uint32_t)step->value);
break;
case RMU_TEMP_REGS:
ctx->display_prefix = "RMU TEMP";
reg_rmu_temp_write(step->reg, (uint32_t)step->value);
break;
case SOC_UNIT_REGS:
ctx->display_prefix = "SOC Unit";
reg_soc_unit_write(step->reg, (uint32_t)step->value);
break;
case MICROSECOND_DELAY:
/* The actual delay is >= the requested delay */
if (ctx->display_features) {
/* Higher baud-rates will reduce the impact of displaying this message */
printk(BIOS_INFO, "Delay %lld uSec\n", step->value);
ctx->display_features = REG_SCRIPT_DISPLAY_NOTHING;
}
udelay(step->value);
break;
case USB_PHY_REGS:
ctx->display_prefix = "USB PHY";
reg_usb_write(step->reg, (uint32_t)step->value);
break;
}
}
const struct reg_script_bus_entry soc_reg_script_bus_table = {
SOC_TYPE, reg_read, reg_write
};
REG_SCRIPT_BUS_ENTRY(soc_reg_script_bus_table);
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