diff options
Diffstat (limited to 'src/northbridge/intel/i945')
| -rw-r--r-- | src/northbridge/intel/i945/Kconfig | 4 | ||||
| -rw-r--r-- | src/northbridge/intel/i945/acpi.c | 14 | ||||
| -rw-r--r-- | src/northbridge/intel/i945/acpi/i945.asl | 2 | ||||
| -rw-r--r-- | src/northbridge/intel/i945/bootblock.c | 16 | ||||
| -rw-r--r-- | src/northbridge/intel/i945/i945.h | 2 | ||||
| -rw-r--r-- | src/northbridge/intel/i945/northbridge.c | 43 |
6 files changed, 21 insertions, 60 deletions
diff --git a/src/northbridge/intel/i945/Kconfig b/src/northbridge/intel/i945/Kconfig index 7fc3e28001..456193aa3b 100644 --- a/src/northbridge/intel/i945/Kconfig +++ b/src/northbridge/intel/i945/Kconfig @@ -41,6 +41,10 @@ config I945_LVDS config MMCONF_BASE_ADDRESS default 0xf0000000 +config MMCONF_BUS_NUMBER + int + default 64 + config OVERRIDE_CLOCK_DISABLE bool default n diff --git a/src/northbridge/intel/i945/acpi.c b/src/northbridge/intel/i945/acpi.c index 232575f586..03c85de7d3 100644 --- a/src/northbridge/intel/i945/acpi.c +++ b/src/northbridge/intel/i945/acpi.c @@ -1,24 +1,14 @@ /* SPDX-License-Identifier: GPL-2.0-only */ -#include <types.h> #include <acpi/acpi.h> #include <acpi/acpigen.h> -#include <commonlib/helpers.h> #include <device/device.h> -#include <device/pci_ops.h> #include "i945.h" unsigned long acpi_fill_mcfg(unsigned long current) { - u32 length, pciexbar; - - if (!decode_pcie_bar(&pciexbar, &length)) - return current; - - const int max_buses = length / MiB; - - current += acpi_create_mcfg_mmconfig((acpi_mcfg_mmconfig_t *) current, - pciexbar, 0x0, 0x0, max_buses - 1); + current += acpi_create_mcfg_mmconfig((acpi_mcfg_mmconfig_t *)current, + CONFIG_MMCONF_BASE_ADDRESS, 0, 0, CONFIG_MMCONF_BUS_NUMBER - 1); return current; } diff --git a/src/northbridge/intel/i945/acpi/i945.asl b/src/northbridge/intel/i945/acpi/i945.asl index c2142cc50a..11d3b505ee 100644 --- a/src/northbridge/intel/i945/acpi/i945.asl +++ b/src/northbridge/intel/i945/acpi/i945.asl @@ -42,7 +42,7 @@ Device (PDRC) Memory32Fixed(ReadWrite, DEFAULT_MCHBAR, 0x00004000) Memory32Fixed(ReadWrite, DEFAULT_DMIBAR, 0x00001000) Memory32Fixed(ReadWrite, DEFAULT_EPBAR, 0x00001000) - Memory32Fixed(ReadWrite, CONFIG_MMCONF_BASE_ADDRESS, 0x04000000) + Memory32Fixed(ReadWrite, CONFIG_MMCONF_BASE_ADDRESS, CONFIG_MMCONF_LENGTH) Memory32Fixed(ReadWrite, 0xfed20000, 0x00020000) // Misc ICH Memory32Fixed(ReadWrite, 0xfed40000, 0x00005000) // Misc ICH Memory32Fixed(ReadWrite, 0xfed45000, 0x0004b000) // Misc ICH diff --git a/src/northbridge/intel/i945/bootblock.c b/src/northbridge/intel/i945/bootblock.c index 60051babd3..f4b46282ca 100644 --- a/src/northbridge/intel/i945/bootblock.c +++ b/src/northbridge/intel/i945/bootblock.c @@ -1,13 +1,23 @@ /* SPDX-License-Identifier: GPL-2.0-only */ #include <arch/bootblock.h> +#include <assert.h> #include <device/pci_ops.h> +#include <types.h> #include "i945.h" -void bootblock_early_northbridge_init(void) +static uint32_t encode_pciexbar_length(void) { - uint32_t reg; + switch (CONFIG_MMCONF_BUS_NUMBER) { + case 256: return 0 << 1; + case 128: return 1 << 1; + case 64: return 2 << 1; + default: return dead_code_t(uint32_t); + } +} +void bootblock_early_northbridge_init(void) +{ /* * The "io" variant of the config access is explicitly used to setup the PCIEXBAR * because CONFIG(MMCONF_SUPPORT) is set to true. That way all subsequent non-explicit @@ -17,6 +27,6 @@ void bootblock_early_northbridge_init(void) * * The PCIEXBAR is assumed to live in the memory mapped IO space under 4GiB. */ - reg = CONFIG_MMCONF_BASE_ADDRESS | 4 | 1; /* 64MiB - 0-63 buses. */ + const uint32_t reg = CONFIG_MMCONF_BASE_ADDRESS | encode_pciexbar_length() | 1; pci_io_write_config32(HOST_BRIDGE, PCIEXBAR, reg); } diff --git a/src/northbridge/intel/i945/i945.h b/src/northbridge/intel/i945/i945.h index e809794700..b3c28aebd1 100644 --- a/src/northbridge/intel/i945/i945.h +++ b/src/northbridge/intel/i945/i945.h @@ -353,8 +353,6 @@ void sdram_dump_mchbar_registers(void); u32 decode_igd_memory_size(u32 gms); u32 decode_tseg_size(const u8 esmramc); -int decode_pcie_bar(u32 *const base, u32 *const len); - /* Romstage mainboard callbacks */ /* Optional: Override the default LPC config. */ void mainboard_lpc_decode(void); diff --git a/src/northbridge/intel/i945/northbridge.c b/src/northbridge/intel/i945/northbridge.c index d2256729e9..e1e35e9b67 100644 --- a/src/northbridge/intel/i945/northbridge.c +++ b/src/northbridge/intel/i945/northbridge.c @@ -12,38 +12,6 @@ #include <cpu/intel/smm_reloc.h> #include "i945.h" -int decode_pcie_bar(u32 *const base, u32 *const len) -{ - *base = 0; - *len = 0; - - struct device *dev = pcidev_on_root(0, 0); - if (!dev) - return 0; - - const u32 pciexbar_reg = pci_read_config32(dev, PCIEXBAR); - - if (!(pciexbar_reg & (1 << 0))) - return 0; - - switch ((pciexbar_reg >> 1) & 3) { - case 0: /* 256MB */ - *base = pciexbar_reg & (0x0f << 28); - *len = 256 * MiB; - return 1; - case 1: /* 128M */ - *base = pciexbar_reg & (0x1f << 27); - *len = 128 * MiB; - return 1; - case 2: /* 64M */ - *base = pciexbar_reg & (0x3f << 26); - *len = 64 * MiB; - return 1; - } - - return 0; -} - static void mch_domain_read_resources(struct device *dev) { uint32_t pci_tolm, tseg_sizek, cbmem_topk, delta_cbmem; @@ -153,9 +121,6 @@ void northbridge_write_smram(u8 smram) pci_write_config8(dev, SMRAM, smram); } - /* TODO We could determine how many PCIe busses we need in - * the bar. For now that number is hardcoded to a max of 64. - */ static struct device_operations pci_domain_ops = { .read_resources = mch_domain_read_resources, .set_resources = mch_domain_set_resources, @@ -165,15 +130,9 @@ static struct device_operations pci_domain_ops = { static void mc_read_resources(struct device *dev) { - u32 pcie_config_base, pcie_config_len; - pci_dev_read_resources(dev); - if (decode_pcie_bar(&pcie_config_base, &pcie_config_len)) { - const int buses = pcie_config_len / MiB; - struct resource *resource = new_resource(dev, PCIEXBAR); - mmconf_resource_init(resource, pcie_config_base, buses); - } + mmconf_resource(dev, PCIEXBAR); } static struct device_operations mc_ops = { |