diff options
Diffstat (limited to 'src/southbridge/amd/cimx/sb800/bootblock.c')
-rw-r--r-- | src/southbridge/amd/cimx/sb800/bootblock.c | 96 |
1 files changed, 0 insertions, 96 deletions
diff --git a/src/southbridge/amd/cimx/sb800/bootblock.c b/src/southbridge/amd/cimx/sb800/bootblock.c deleted file mode 100644 index 636e5a8eec..0000000000 --- a/src/southbridge/amd/cimx/sb800/bootblock.c +++ /dev/null @@ -1,96 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0-only */ - -#include <amdblocks/acpimmio.h> -#include <arch/bootblock.h> -#include <device/pci_ops.h> - -static void enable_rom(void) -{ - u16 word; - u32 dword; - const pci_devfn_t dev = PCI_DEV(0, 0x14, 0x03); - /* SB800 LPC Bridge 0:20:3:44h. - * BIT6: Port Enable for serial port 0x3f8-0x3ff - * BIT29: Port Enable for KBC port 0x60 and 0x64 - * BIT30: Port Enable for ACPI Micro-Controller port 0x66 and 0x62 - */ - dword = pci_s_read_config32(dev, 0x44); - //dword |= (1<<6) | (1<<29) | (1<<30); - /* Turn on all of LPC IO Port decode enable */ - dword = 0xffffffff; - pci_s_write_config32(dev, 0x44, dword); - - /* SB800 LPC Bridge 0:20:3:48h. - * BIT0: Port Enable for SuperIO 0x2E-0x2F - * BIT1: Port Enable for SuperIO 0x4E-0x4F - * BIT4: Port Enable for LPC ROM Address Arrage2 (0x68-0x6C) - * BIT6: Port Enable for RTC IO 0x70-0x73 - * BIT21: Port Enable for Port 0x80 - */ - dword = pci_s_read_config32(dev, 0x48); - dword |= (1 << 0) | (1 << 1) | (1 << 4) | (1 << 6) | (1 << 21); - pci_s_write_config32(dev, 0x48, dword); - - /* Enable ROM access */ - word = pci_s_read_config16(dev, 0x6c); - word = 0x10000 - (CONFIG_COREBOOT_ROMSIZE_KB >> 6); - pci_s_write_config16(dev, 0x6c, word); -} - -static void enable_prefetch(void) -{ - u32 dword; - const pci_devfn_t dev = PCI_DEV(0, 0x14, 0x03); - - /* Enable PrefetchEnSPIFromHost */ - dword = pci_s_read_config32(dev, 0xb8); - pci_s_write_config32(dev, 0xb8, dword | (1 << 24)); -} - -static void enable_spi_fast_mode(void) -{ - u32 dword; - const pci_devfn_t dev = PCI_DEV(0, 0x14, 0x03); - - // set temp MMIO base - volatile u32 *spi_base = (void *)0xa0000000; - u32 save = pci_s_read_config32(dev, 0xa0); - pci_s_write_config32(dev, 0xa0, (u32)spi_base | 2); - - // early enable of SPI 33 MHz fast mode read - dword = spi_base[3]; - spi_base[3] = (dword & ~(3 << 14)) | (1 << 14); - spi_base[0] = spi_base[0] | (1 << 18); // fast read enable - - pci_s_write_config32(dev, 0xa0, save); -} - -static void enable_clocks(void) -{ - u32 reg32; - - // Program SB800 MiscClkCntrl register to configure clock output on the - // 14M_25M_48M_OSC ball usually used for the Super-I/O. - // Almost all SIOs need 48 MHz, only the SMSC SCH311x wants 14 MHz, - // which is the SB800's power up default. We could switch back to 14 - // in the mainboard's romstage.c, but then the clock frequency would - // change twice. - reg32 = misc_read32(0x40); - reg32 &= ~((1 << 2) | (3 << 0)); // enable, 14 MHz (power up default) -#if !CONFIG(SUPERIO_WANTS_14MHZ_CLOCK) - reg32 |= 2 << 0; // Device_CLK1_sel = 48 MHz -#endif - misc_write32(0x40, reg32); -} - -void bootblock_early_southbridge_init(void) -{ - /* Setup the ROM access for 2M */ - enable_rom(); - enable_prefetch(); - enable_spi_fast_mode(); - - // Program AcpiMmioEn to enable MMIO access to MiscCntrl register - enable_acpimmio_decode_pm24(); - enable_clocks(); -} |