diff options
Diffstat (limited to 'src/southbridge/intel/i82801er/i82801er_lpc.c')
-rw-r--r-- | src/southbridge/intel/i82801er/i82801er_lpc.c | 392 |
1 files changed, 392 insertions, 0 deletions
diff --git a/src/southbridge/intel/i82801er/i82801er_lpc.c b/src/southbridge/intel/i82801er/i82801er_lpc.c new file mode 100644 index 0000000000..3f77b51409 --- /dev/null +++ b/src/southbridge/intel/i82801er/i82801er_lpc.c @@ -0,0 +1,392 @@ +/* + * (C) 2004 Linux Networx + */ +#include <console/console.h> +#include <device/device.h> +#include <device/pci.h> +#include <device/pci_ids.h> +#include <device/pci_ops.h> +#include <pc80/mc146818rtc.h> +#include <pc80/isa-dma.h> +#include <arch/io.h> +#include "i82801er.h" + +#define ACPI_BAR 0x40 +#define GPIO_BAR 0x58 + +#define NMI_OFF 0 +#define MAINBOARD_POWER_OFF 0 +#define MAINBOARD_POWER_ON 1 + +#ifndef MAINBOARD_POWER_ON_AFTER_POWER_FAIL +#define MAINBOARD_POWER_ON_AFTER_POWER_FAIL MAINBOARD_POWER_ON +#endif + +#define ALL (0xff << 24) +#define NONE (0) +#define DISABLED (1 << 16) +#define ENABLED (0 << 16) +#define TRIGGER_EDGE (0 << 15) +#define TRIGGER_LEVEL (1 << 15) +#define POLARITY_HIGH (0 << 13) +#define POLARITY_LOW (1 << 13) +#define PHYSICAL_DEST (0 << 11) +#define LOGICAL_DEST (1 << 11) +#define ExtINT (7 << 8) +#define NMI (4 << 8) +#define SMI (2 << 8) +#define INT (1 << 8) + +static void setup_ioapic(void) +{ + int i; + unsigned long value_low, value_high; + unsigned long ioapic_base = 0xfec00000; + volatile unsigned long *l; + unsigned interrupts; + + l = (unsigned long *) ioapic_base; + + l[0] = 0x01; + interrupts = (l[04] >> 16) & 0xff; + for (i = 0; i < interrupts; i++) { + l[0] = (i * 2) + 0x10; + l[4] = DISABLED; + value_low = l[4]; + l[0] = (i * 2) + 0x11; + l[4] = NONE; /* Should this be an address? */ + value_high = l[4]; + if (value_low == 0xffffffff) { + printk_warning("IO APIC not responding.\n"); + return; + } + } + + /* Put the ioapic in virtual wire mode */ + l[0] = 0 + 0x10; + l[4] = ENABLED | TRIGGER_EDGE | POLARITY_HIGH | PHYSICAL_DEST | ExtINT; +} + +#define SERIRQ_CNTL 0x64 +static void i82801er_enable_serial_irqs(device_t dev) +{ + /* set packet length and toggle silent mode bit */ + pci_write_config8(dev, SERIRQ_CNTL, (1 << 7)|(1 << 6)|((21 - 17) << 2)|(0 << 0)); + pci_write_config8(dev, SERIRQ_CNTL, (1 << 7)|(0 << 6)|((21 - 17) << 2)|(0 << 0)); +} + +#define PCI_DMA_CFG 0x90 +static void i82801er_pci_dma_cfg(device_t dev) +{ + /* Set PCI DMA CFG to lpc I/F DMA */ + pci_write_config16(dev, PCI_DMA_CFG, 0xfcff); +} + +#define LPC_EN 0xe6 +static void i82801er_enable_lpc(device_t dev) +{ + /* lpc i/f enable */ + pci_write_config8(dev, LPC_EN, 0x0d); +} + +typedef struct southbridge_intel_i82801er_config config_t; + +static void set_i82801er_gpio_use_sel( + device_t dev, struct resource *res, config_t *config) +{ + uint32_t gpio_use_sel, gpio_use_sel2; + int i; + + gpio_use_sel = 0x1A003180; + gpio_use_sel2 = 0x00000007; + for(i = 0; i < 64; i++) { + int val; + switch(config->gpio[i] & ICH5R_GPIO_USE_MASK) { + case ICH5R_GPIO_USE_AS_NATIVE: val = 0; break; + case ICH5R_GPIO_USE_AS_GPIO: val = 1; break; + default: + continue; + } + /* The caller is responsible for not playing with unimplemented bits */ + if (i < 32) { + gpio_use_sel &= ~( 1 << i); + gpio_use_sel |= (val << i); + } else { + gpio_use_sel2 &= ~( 1 << (i - 32)); + gpio_use_sel2 |= (val << (i - 32)); + } + } + outl(gpio_use_sel, res->base + 0x00); + outl(gpio_use_sel2, res->base + 0x30); +} + +static void set_i82801er_gpio_direction( + device_t dev, struct resource *res, config_t *config) +{ + uint32_t gpio_io_sel, gpio_io_sel2; + int i; + + gpio_io_sel = 0x0000ffff; + gpio_io_sel2 = 0x00000300; + for(i = 0; i < 64; i++) { + int val; + switch(config->gpio[i] & ICH5R_GPIO_SEL_MASK) { + case ICH5R_GPIO_SEL_OUTPUT: val = 0; break; + case ICH5R_GPIO_SEL_INPUT: val = 1; break; + default: + continue; + } + /* The caller is responsible for not playing with unimplemented bits */ + if (i < 32) { + gpio_io_sel &= ~( 1 << i); + gpio_io_sel |= (val << i); + } else { + gpio_io_sel2 &= ~( 1 << (i - 32)); + gpio_io_sel2 |= (val << (i - 32)); + } + } + outl(gpio_io_sel, res->base + 0x04); + outl(gpio_io_sel2, res->base + 0x34); +} + +static void set_i82801er_gpio_level( + device_t dev, struct resource *res, config_t *config) +{ + uint32_t gpio_lvl, gpio_lvl2; + uint32_t gpio_blink; + int i; + + gpio_lvl = 0x1b3f0000; + gpio_blink = 0x00040000; + gpio_lvl2 = 0x00030207; + for(i = 0; i < 64; i++) { + int val, blink; + switch(config->gpio[i] & ICH5R_GPIO_LVL_MASK) { + case ICH5R_GPIO_LVL_LOW: val = 0; blink = 0; break; + case ICH5R_GPIO_LVL_HIGH: val = 1; blink = 0; break; + case ICH5R_GPIO_LVL_BLINK: val = 1; blink = 1; break; + default: + continue; + } + /* The caller is responsible for not playing with unimplemented bits */ + if (i < 32) { + gpio_lvl &= ~( 1 << i); + gpio_blink &= ~( 1 << i); + gpio_lvl |= ( val << i); + gpio_blink |= (blink << i); + } else { + gpio_lvl2 &= ~( 1 << (i - 32)); + gpio_lvl2 |= (val << (i - 32)); + } + } + outl(gpio_lvl, res->base + 0x0c); + outl(gpio_blink, res->base + 0x18); + outl(gpio_lvl2, res->base + 0x38); +} + +static void set_i82801er_gpio_inv( + device_t dev, struct resource *res, config_t *config) +{ + uint32_t gpio_inv; + int i; + + gpio_inv = 0x00000000; + for(i = 0; i < 32; i++) { + int val; + switch(config->gpio[i] & ICH5R_GPIO_INV_MASK) { + case ICH5R_GPIO_INV_OFF: val = 0; break; + case ICH5R_GPIO_INV_ON: val = 1; break; + default: + continue; + } + gpio_inv &= ~( 1 << i); + gpio_inv |= (val << i); + } + outl(gpio_inv, res->base + 0x2c); +} + +static void i82801er_pirq_init(device_t dev) +{ + config_t *config; + + /* Get the chip configuration */ + config = dev->chip_info; + + if(config->pirq_a_d) { + pci_write_config32(dev, 0x60, config->pirq_a_d); + } + if(config->pirq_e_h) { + pci_write_config32(dev, 0x68, config->pirq_e_h); + } +} + + +static void i82801er_gpio_init(device_t dev) +{ + struct resource *res; + config_t *config; + + /* Skip if I don't have any configuration */ + if (!dev->chip_info) { + return; + } + /* The programmer is responsible for ensuring + * a valid gpio configuration. + */ + + /* Get the chip configuration */ + config = dev->chip_info; + /* Find the GPIO bar */ + res = find_resource(dev, GPIO_BAR); + if (!res) { + return; + } + + /* Set the use selects */ + set_i82801er_gpio_use_sel(dev, res, config); + + /* Set the IO direction */ + set_i82801er_gpio_direction(dev, res, config); + + /* Setup the input inverters */ + set_i82801er_gpio_inv(dev, res, config); + + /* Set the value on the GPIO output pins */ + set_i82801er_gpio_level(dev, res, config); + +} + +static void enable_hpet(struct device *dev) +{ +const unsigned long hpet_address = 0xfed0000; + + uint32_t dword; + uint32_t code = (0 & 0x3); + + dword = pci_read_config32(dev, GEN_CNTL); + dword |= (1 << 17); /* enable hpet */ + + /* Bits [16:15] Memory Address Range + * 00 FED0_0000h - FED0_03FFh + * 01 FED0_1000h - FED0_13FFh + * 10 FED0_2000h - FED0_23FFh + * 11 FED0_3000h - FED0_33FFh + */ + + dword &= ~(3 << 15); /* clear it */ + dword |= (code<<15); + + printk_debug("enabling HPET @0x%x\n", hpet_address | (code <<12) ); +} + +static void lpc_init(struct device *dev) +{ + uint8_t byte; + uint32_t value; + int pwr_on=MAINBOARD_POWER_ON_AFTER_POWER_FAIL; + + /* IO APIC initialization */ + value = pci_read_config32(dev, 0xd0); + value |= (1 << 8)|(1<<7)|(1<<1); + pci_write_config32(dev, 0xd0, value); + value = pci_read_config32(dev, 0xd4); + value |= (1<<1); + pci_write_config32(dev, 0xd4, value); + setup_ioapic(); + + i82801er_enable_serial_irqs(dev); + + i82801er_pci_dma_cfg(dev); + + i82801er_enable_lpc(dev); + + /* Clear SATA to non raid */ + pci_write_config8(dev, 0xae, 0x00); + + get_option(&pwr_on, "power_on_after_fail"); + byte = pci_read_config8(dev, 0xa4); + byte &= 0xfe; + if (!pwr_on) { + byte |= 1; + } + pci_write_config8(dev, 0xa4, byte); + printk_info("set power %s after power fail\n", pwr_on?"on":"off"); + + /* Set up the PIRQ */ + i82801er_pirq_init(dev); + + /* Set the state of the gpio lines */ + i82801er_gpio_init(dev); + + /* Initialize the real time clock */ + rtc_init(0); + + /* Initialize isa dma */ + isa_dma_init(); + + /* Disable IDE (needed when sata is enabled) */ + pci_write_config8(dev, 0xf2, 0x60); + + enable_hpet(dev); +} + +static void i82801er_lpc_read_resources(device_t dev) +{ + struct resource *res; + + /* Get the normal pci resources of this device */ + pci_dev_read_resources(dev); + + /* Add the ACPI BAR */ + res = pci_get_resource(dev, ACPI_BAR); + + /* Add the GPIO BAR */ + res = pci_get_resource(dev, GPIO_BAR); + + /* Add an extra subtractive resource for both memory and I/O */ + res = new_resource(dev, IOINDEX_SUBTRACTIVE(0, 0)); + res->flags = IORESOURCE_IO | IORESOURCE_SUBTRACTIVE | IORESOURCE_ASSIGNED; + + res = new_resource(dev, IOINDEX_SUBTRACTIVE(1, 0)); + res->flags = IORESOURCE_MEM | IORESOURCE_SUBTRACTIVE | IORESOURCE_ASSIGNED; +} + +static void i82801er_lpc_enable_resources(device_t dev) +{ + uint8_t acpi_cntl, gpio_cntl; + + /* Enable the normal pci resources */ + pci_dev_enable_resources(dev); + + /* Enable the ACPI bar */ + acpi_cntl = pci_read_config8(dev, 0x44); + acpi_cntl |= (1 << 4); + pci_write_config8(dev, 0x44, acpi_cntl); + + /* Enable the GPIO bar */ + gpio_cntl = pci_read_config8(dev, 0x5c); + gpio_cntl |= (1 << 4); + pci_write_config8(dev, 0x5c, gpio_cntl); + + enable_childrens_resources(dev); +} + +static struct pci_operations lops_pci = { + .set_subsystem = 0, +}; + +static struct device_operations lpc_ops = { + .read_resources = i82801er_lpc_read_resources, + .set_resources = pci_dev_set_resources, + .enable_resources = i82801er_lpc_enable_resources, + .init = lpc_init, + .scan_bus = scan_static_bus, + .enable = i82801er_enable, + .ops_pci = &lops_pci, +}; + +static struct pci_driver lpc_driver __pci_driver = { + .ops = &lpc_ops, + .vendor = PCI_VENDOR_ID_INTEL, + .device = PCI_DEVICE_ID_INTEL_82801ER_ISA, +}; |