diff options
Diffstat (limited to 'src/southbridge/intel/i82371eb/i82371eb.c')
-rw-r--r-- | src/southbridge/intel/i82371eb/i82371eb.c | 59 |
1 files changed, 30 insertions, 29 deletions
diff --git a/src/southbridge/intel/i82371eb/i82371eb.c b/src/southbridge/intel/i82371eb/i82371eb.c index ab982cf65a..3a7b8d201b 100644 --- a/src/southbridge/intel/i82371eb/i82371eb.c +++ b/src/southbridge/intel/i82371eb/i82371eb.c @@ -18,46 +18,47 @@ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ -/* Datasheet: +/* Note: This code supports the 82371FB/SB/MX/AB/EB/MB and 82437MX. */ + +/* Datasheets: + * - Name: 82371FB (PIIX) AND 82371SB (PIIX3) PCI ISA IDE XCELERATOR + * - URL: http://www.intel.com/design/intarch/datashts/290550.htm + * - PDF: http://download.intel.com/design/intarch/datashts/29055002.pdf + * - Date: April 1997 + * - Order Number: 290550-002 + * + * - Name: 82371FB (PIIX) and 82371SB (PIIX3) PCI ISA IDE Xcelerator + * Specification Update + * - URL: http://www.intel.com/design/chipsets/specupdt/297658.htm + * - PDF: http://download.intel.com/design/chipsets/specupdt/29765801.pdf + * - Date: March 1998 + * - Order Number: 297658-004 + * * - Name: 82371AB PCI-TO-ISA / IDE XCELERATOR (PIIX4) + * (applies to 82371AB/EB/MB, a.k.a. PIIX4/PIIX4E/PIIX4M) * - URL: http://www.intel.com/design/intarch/datashts/290562.htm * - PDF: http://www.intel.com/design/intarch/datashts/29056201.pdf + * - Date: April 1997 * - Order Number: 290562-001 + * + * - Name: 82371AB/EB/MB (PIIX4/PIIX4E/PIIX4M) Specification Update + * - URL: http://www.intel.com/design/chipsets/specupdt/297738.htm + * - PDF: http://www.intel.com/design/chipsets/specupdt/29773817.pdf + * - Date: January 2002 + * - Order Number: 297738-017 */ -#include <console/console.h> +/* TODO: List the other datasheets. */ + #include <device/device.h> -#include <device/pci.h> #include "i82371eb.h" -/** - * Enable access to all BIOS regions. Do not enable write access to the ROM. - * - * XBCS register bits: - * - Set bit 9: 1-Meg Extended BIOS Enable (PCI master accesses to - * FFF00000-FFF7FFFF are forwarded to ISA). - * - Set bit 7: Extended BIOS Enable (PCI master accesses to - * FFF80000-FFFDFFFF are forwarded to ISA). - * - Set bit 6: Lower BIOS Enable (PCI master, or ISA master accesses to - * the lower 64-Kbyte BIOS block (E0000-EFFFF) at the top - * of 1 Mbyte, or the aliases at the top of 4 Gbyte - * (FFFE0000-FFFEFFFF) result in the generation of BIOSCS#. - * - Bit 2: BIOSCS# Write Enable (1=enable, 0=disable). - * - * Note: Accesses to FFFF0000-FFFFFFFF are always forwarded to ISA. - * - * @param dev The device to use. - */ -void i82371eb_enable(device_t dev) +void i82371eb_enable(struct device *dev) { - uint16_t reg; - - reg = pci_read_config16(dev, XBCS); - reg |= 0x2c0; - pci_write_config16(dev, XBCS, reg); + /* TODO: Nothing to do? */ } -struct chip_operations southbridge_intel_i82371eb_ops = { - CHIP_NAME("Intel 82371EB Southbridge") +const struct chip_operations southbridge_intel_i82371eb_ops = { + CHIP_NAME("Intel 82371FB/SB/MX/AB/EB/MB Southbridge") .enable_dev = i82371eb_enable, }; |