diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/soc/intel/baytrail/baytrail/gfx.h | 48 | ||||
| -rw-r--r-- | src/soc/intel/baytrail/baytrail/romstage.h | 1 | ||||
| -rw-r--r-- | src/soc/intel/baytrail/romstage/Makefile.inc | 1 | ||||
| -rw-r--r-- | src/soc/intel/baytrail/romstage/gfx.c | 49 | ||||
| -rw-r--r-- | src/soc/intel/baytrail/romstage/romstage.c | 2 |
5 files changed, 101 insertions, 0 deletions
diff --git a/src/soc/intel/baytrail/baytrail/gfx.h b/src/soc/intel/baytrail/baytrail/gfx.h new file mode 100644 index 0000000000..655615d37c --- /dev/null +++ b/src/soc/intel/baytrail/baytrail/gfx.h @@ -0,0 +1,48 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2013 Google Inc. + * + * 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 + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#ifndef _BAYTRAIL_GFX_H_ +#define _BAYTRAIL_GFX_H_ + +/* + * PCI config registers. + */ + +#define GGC 0x50 +# define GGC_VGA_DISABLE (1 << 1) +# define GGC_GTT_SIZE_MASK (3 << 8) +# define GGC_GTT_SIZE_0MB (0 << 8) +# define GGC_GTT_SIZE_1MB (1 << 8) +# define GGC_GTT_SIZE_2MB (2 << 8) +# define GGC_GSM_SIZE_MASK (0x1f << 3) +# define GGC_GSM_SIZE_0MB (0 << 3) +# define GGC_GSM_SIZE_32MB (1 << 3) +# define GGC_GSM_SIZE_64MB (2 << 3) +# define GGC_GSM_SIZE_128MB (4 << 3) + +#define GSM_BASE 0x5c +#define GTT_BASE 0x70 + +#define MSAC 0x62 +#define APERTURE_SIZE_MASK (3 << 1) +#define APERTURE_SIZE_128MB (0 << 1) +#define APERTURE_SIZE_256MB (1 << 1) +#define APERTURE_SIZE_512MB (3 << 1) + +#endif /* _BAYTRAIL_GFX_H_ */ diff --git a/src/soc/intel/baytrail/baytrail/romstage.h b/src/soc/intel/baytrail/baytrail/romstage.h index b0755e5e6d..6c622e19e7 100644 --- a/src/soc/intel/baytrail/baytrail/romstage.h +++ b/src/soc/intel/baytrail/baytrail/romstage.h @@ -36,6 +36,7 @@ void romstage_common(const struct romstage_params *params); void * asmlinkage romstage_main(unsigned long bist); void asmlinkage romstage_after_car(void); void raminit(struct mrc_params *mp, int prev_sleep_state); +void gfx_init(void); #if CONFIG_ENABLE_BUILTIN_COM1 void byt_config_com1_and_enable(void); diff --git a/src/soc/intel/baytrail/romstage/Makefile.inc b/src/soc/intel/baytrail/romstage/Makefile.inc index 188ce44ecd..118c3485cd 100644 --- a/src/soc/intel/baytrail/romstage/Makefile.inc +++ b/src/soc/intel/baytrail/romstage/Makefile.inc @@ -2,3 +2,4 @@ cpu_incs += $(src)/soc/intel/baytrail/romstage/cache_as_ram.inc romstage-y += romstage.c romstage-y += raminit.c romstage-$(CONFIG_ENABLE_BUILTIN_COM1) += uart.c +romstage-y += gfx.c diff --git a/src/soc/intel/baytrail/romstage/gfx.c b/src/soc/intel/baytrail/romstage/gfx.c new file mode 100644 index 0000000000..3b47ccf954 --- /dev/null +++ b/src/soc/intel/baytrail/romstage/gfx.c @@ -0,0 +1,49 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2013 Google Inc. + * + * 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 + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <arch/io.h> +#include <baytrail/gfx.h> +#include <baytrail/pci_devs.h> +#include <baytrail/romstage.h> + +void gfx_init(void) +{ + uint32_t ggc; + uint8_t msac; + const unsigned int gfx_dev = PCI_DEV(0, GFX_DEV, GFX_FUNC); + + /* The GFX device needs to set the aperture, gtt stolen size, and + * graphics stolen memory stolen size before running MRC. For now + * just hard code the defaults. Options can be added to the device + * tree if needed. */ + + ggc = pci_read_config32(gfx_dev, GGC); + msac = pci_read_config8(gfx_dev, MSAC); + + ggc &= ~(GGC_GTT_SIZE_MASK | GGC_GSM_SIZE_MASK); + ggc |= GGC_GTT_SIZE_2MB | GGC_GSM_SIZE_32MB; + /* Enable VGA decoding as well. */ + ggc &= ~(GGC_VGA_DISABLE); + + msac &= ~(APERTURE_SIZE_MASK); + msac |= APERTURE_SIZE_256MB; + + pci_write_config32(gfx_dev, GGC, ggc); + pci_write_config8(gfx_dev, MSAC, msac); +} diff --git a/src/soc/intel/baytrail/romstage/romstage.c b/src/soc/intel/baytrail/romstage/romstage.c index d3538991bb..e4e6fdecee 100644 --- a/src/soc/intel/baytrail/romstage/romstage.c +++ b/src/soc/intel/baytrail/romstage/romstage.c @@ -89,6 +89,8 @@ void romstage_common(const struct romstage_params *params) console_init(); + gfx_init(); + /* Initialize RAM */ raminit(params->mrc_params, 5); |