From cf2783882f914c2a50d06a7a31130ecb0b160f05 Mon Sep 17 00:00:00 2001 From: Arthur Heymans Date: Sun, 16 Dec 2018 01:04:24 +0100 Subject: mb/kontron/986lcd-m: Implement disabling ethernet NIC in ramstage With the i82801gx code automatically disabling devices ethernet NICs attached to the southbridge PCIe ports can now be disabled during the ramstage. Change-Id: If4163f8101d37cc09c0b51b1be20bf8388ed2b89 Signed-off-by: Arthur Heymans Reviewed-on: https://review.coreboot.org/c/30245 Reviewed-by: Patrick Georgi Tested-by: build bot (Jenkins) --- src/mainboard/kontron/986lcd-m/romstage.c | 47 ------------------------------- 1 file changed, 47 deletions(-) (limited to 'src/mainboard/kontron/986lcd-m/romstage.c') diff --git a/src/mainboard/kontron/986lcd-m/romstage.c b/src/mainboard/kontron/986lcd-m/romstage.c index f0d4903bba..fda8f97848 100644 --- a/src/mainboard/kontron/986lcd-m/romstage.c +++ b/src/mainboard/kontron/986lcd-m/romstage.c @@ -165,8 +165,6 @@ static void early_superio_config_w83627thg(void) static void rcba_config(void) { - u32 reg32 = 0; - /* Set up virtual channel 0 */ /* Device 1f interrupt pin register */ @@ -184,50 +182,6 @@ static void rcba_config(void) /* Enable IOAPIC */ RCBA8(OIC) = 0x03; - /* Now, this is a bit ugly. As per PCI specification, function 0 of a - * device always has to be implemented. So disabling ethernet port 1 - * would essentially disable all three ethernet ports of the mainboard. - * It's possible to rename the ports to achieve compatibility to the - * PCI spec but this will confuse all (static!) tables containing - * interrupt routing information. - * To avoid this, we enable (unused) port 6 and swap it with port 1 - * in the case that ethernet port 1 is disabled. Since no devices - * are connected to that port, we don't have to worry about interrupt - * routing. - */ - int port_shuffle = 0; - - /* Disable unused devices */ - if (read_option(ethernet1, 0) != 0) { - printk(BIOS_DEBUG, "Disabling ethernet adapter 1.\n"); - reg32 |= FD_PCIE1; - } - if (read_option(ethernet2, 0) != 0) { - printk(BIOS_DEBUG, "Disabling ethernet adapter 2.\n"); - reg32 |= FD_PCIE2; - } else { - if (reg32 & FD_PCIE1) - port_shuffle = 1; - } - if (read_option(ethernet3, 0) != 0) { - printk(BIOS_DEBUG, "Disabling ethernet adapter 3.\n"); - reg32 |= FD_PCIE3; - } else { - if (reg32 & FD_PCIE1) - port_shuffle = 1; - } - - if (port_shuffle) { - /* Enable PCIE6 again */ - reg32 &= ~FD_PCIE6; - /* Swap PCIE6 and PCIE1 */ - RCBA32(RPFN) = 0x00043215; - } - - reg32 |= 1; - - RCBA32(FD) = reg32; - /* Enable PCIe Root Port Clock Gate */ } @@ -271,7 +225,6 @@ static void early_ich7_init(void) reg32 &= ~(3 << 0); reg32 |= (1 << 0); RCBA32(0x3430) = reg32; - RCBA32(FD) |= (1 << 0); RCBA16(0x0200) = 0x2008; RCBA8(0x2027) = 0x0d; RCBA16(0x3e08) |= (1 << 7); -- cgit v1.2.3