Timothy Pearson (tpearson@raptorengineeringinc.com) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/8360
-gerrit
commit 230cbf17e1f792cb9a27241ed20ff423db5e2ef8 Author: Timothy Pearson tpearson@raptorengineeringinc.com Date: Thu Feb 5 01:02:57 2015 -0600
drivers/xgi: Fix legacy VGA text mode initialization
TEST: Booted KFSN4-DRE with on-board XGI Volari Z9s Initial text from coreboot appeared, and the Linux console was displayed immediately at the start of kernel initialization. After boot was complete the text mode console continued to behave normally.
SeaBIOS does not currently make use of the legacy VGA text-mode display.
Change-Id: I2177a1d00e6f07db661dd99fe0184e2c228404d1 Signed-off-by: Timothy Pearson tpearson@raptorengineeringinc.com --- src/drivers/xgi/common/vb_init.c | 6 +++++- src/drivers/xgi/common/xgi_coreboot.c | 27 +++++++++++++++++++-------- src/drivers/xgi/common/xgi_coreboot.h | 2 ++ 3 files changed, 26 insertions(+), 9 deletions(-)
diff --git a/src/drivers/xgi/common/vb_init.c b/src/drivers/xgi/common/vb_init.c index 2b81605..a2fbc80 100644 --- a/src/drivers/xgi/common/vb_init.c +++ b/src/drivers/xgi/common/vb_init.c @@ -1,8 +1,11 @@ /* * This file is part of the coreboot project. * + * Copyright (C) 2015 Timothy Pearson tpearson@raptorengineeringinc.com, Raptor Engineering + * * File taken from the Linux xgifb driver (v3.18.5) * Coreboot-specific includes added at top + * XGINew_SetDRAMSize_340 slightly modified for coreboot text mode * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by @@ -854,7 +857,8 @@ static void XGINew_SetDRAMSize_340(struct xgifb_video_info *xgifb_info,
pVBInfo->FBAddr = HwDeviceExtension->pjVideoMemoryAddress;
- XGISetModeNew(xgifb_info, HwDeviceExtension, 0x2e); + if (IS_ENABLED(CONFIG_MAINBOARD_DO_NATIVE_VGA_INIT)) + XGISetModeNew(xgifb_info, HwDeviceExtension, 0x2e);
data = xgifb_reg_get(pVBInfo->P3c4, 0x21); /* disable read cache */ diff --git a/src/drivers/xgi/common/xgi_coreboot.c b/src/drivers/xgi/common/xgi_coreboot.c index 84ed81a..a4abe71 100755 --- a/src/drivers/xgi/common/xgi_coreboot.c +++ b/src/drivers/xgi/common/xgi_coreboot.c @@ -123,12 +123,14 @@ int xgifb_probe(struct pci_dev *pdev, struct xgifb_video_info *xgifb_info) xgifb_info->video_size = video_size_max; }
- /* Enable PCI_LINEAR_ADDRESSING and MMIO_ENABLE */ - xgifb_reg_or(XGISR, - IND_SIS_PCI_ADDRESS_SET, - (SIS_PCI_ADDR_ENABLE | SIS_MEM_MAP_IO_ENABLE)); - /* Enable 2D accelerator engine */ - xgifb_reg_or(XGISR, IND_SIS_MODULE_ENABLE, SIS_ENABLE_2D); + if (IS_ENABLED(CONFIG_MAINBOARD_DO_NATIVE_VGA_INIT)) { + /* Enable PCI_LINEAR_ADDRESSING and MMIO_ENABLE */ + xgifb_reg_or(XGISR, + IND_SIS_PCI_ADDRESS_SET, + (SIS_PCI_ADDR_ENABLE | SIS_MEM_MAP_IO_ENABLE)); + /* Enable 2D accelerator engine */ + xgifb_reg_or(XGISR, IND_SIS_MODULE_ENABLE, SIS_ENABLE_2D); + }
hw_info->ulVideoMemorySize = xgifb_info->video_size;
@@ -265,7 +267,10 @@ int xgifb_probe(struct pci_dev *pdev, struct xgifb_video_info *xgifb_info) xgifb_info->mode_idx = XGIfb_GetXG21DefaultLVDSModeIdx(xgifb_info); else - xgifb_info->mode_idx = DEFAULT_MODE; + if (IS_ENABLED(CONFIG_MAINBOARD_DO_NATIVE_VGA_INIT)) + xgifb_info->mode_idx = DEFAULT_MODE; + else + xgifb_info->mode_idx = DEFAULT_TEXT_MODE; }
if (xgifb_info->mode_idx < 0) { @@ -406,10 +411,16 @@ int xgifb_modeset(struct pci_dev *pdev, struct xgifb_video_info *xgifb_info) } #else /* FIXME - * Text mode does not work + * Text mode is slightly unstable/jittery (bad/incomplete DDR init?) */ + + /* Initialize standard VGA text mode */ vga_io_init(); vga_textmode_init(); + printk(BIOS_INFO, "XGI VGA text mode initialized\n"); + + /* if we don't have console, at least print something... */ + vga_line_write(0, "XGI VGA text mode initialized"); #endif
return 0; diff --git a/src/drivers/xgi/common/xgi_coreboot.h b/src/drivers/xgi/common/xgi_coreboot.h index 524615c..b616751 100644 --- a/src/drivers/xgi/common/xgi_coreboot.h +++ b/src/drivers/xgi/common/xgi_coreboot.h @@ -208,6 +208,8 @@ enum _SIS_LCD_TYPE {
/* End code taken from Linux kernel 3.18.5 */
+#define DEFAULT_TEXT_MODE 16 /* index for 800x600x8 */ + /* coreboot <--> kernel code interface */ #define __iomem #define SISIOMEMTYPE