diff options
Diffstat (limited to 'src/soc/intel')
| -rw-r--r-- | src/soc/intel/fsp_baytrail/Kconfig | 8 | ||||
| -rw-r--r-- | src/soc/intel/fsp_baytrail/Makefile.inc | 2 | ||||
| -rw-r--r-- | src/soc/intel/fsp_baytrail/gfx.c | 118 |
3 files changed, 128 insertions, 0 deletions
diff --git a/src/soc/intel/fsp_baytrail/Kconfig b/src/soc/intel/fsp_baytrail/Kconfig index 506e731f9f..b30d52f9df 100644 --- a/src/soc/intel/fsp_baytrail/Kconfig +++ b/src/soc/intel/fsp_baytrail/Kconfig @@ -96,6 +96,14 @@ config VGA_BIOS_FILE string default "../intel/cpu/baytrail/vbios/Vga.dat" if VGA_BIOS +config FSP_BAYTRAIL_GFX_INIT + default n + bool + help + Enabling this option will activate graphics init code. With this init, + the graphic power gate registers will be initialized before + VBIOS is executed. + config CPU_MICROCODE_HEADER_FILES string default "../intel/cpu/baytrail/microcode/M0130673322.h ../intel/cpu/baytrail/microcode/M0130679901.h ../intel/cpu/baytrail/microcode/M0230672228.h" diff --git a/src/soc/intel/fsp_baytrail/Makefile.inc b/src/soc/intel/fsp_baytrail/Makefile.inc index 79fc7eb79c..41672e6abf 100644 --- a/src/soc/intel/fsp_baytrail/Makefile.inc +++ b/src/soc/intel/fsp_baytrail/Makefile.inc @@ -3,6 +3,7 @@ # # Copyright (C) 2010 Google Inc. # Copyright (C) 2013-2014 Sage Electronic Engineering, LLC. +# Copyright (C) 2016 Siemens AG # # 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 @@ -54,6 +55,7 @@ ramstage-$(CONFIG_HAVE_SMI_HANDLER) += smm.c ramstage-y += placeholders.c ramstage-y += i2c.c +ramstage-(CONFIG_FSP_BAYTRAIL_GFX_INIT) += gfx.c CPPFLAGS_common += -I$(src)/soc/intel/fsp_baytrail/include CPPFLAGS_common += -I$(src)/soc/intel/fsp_baytrail/fsp diff --git a/src/soc/intel/fsp_baytrail/gfx.c b/src/soc/intel/fsp_baytrail/gfx.c new file mode 100644 index 0000000000..4d3737d9a5 --- /dev/null +++ b/src/soc/intel/fsp_baytrail/gfx.c @@ -0,0 +1,118 @@ +/* + * This file is part of the coreboot project. + * + * Copyright 2013 Google Inc. + * Copyright 2016 Siemens AG + * + * 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. + */ + +#include <arch/io.h> +#include <console/console.h> +#include <delay.h> +#include <device/device.h> +#include <device/pci.h> +#include <device/pci_ids.h> +#include <reg_script.h> +#include <stdlib.h> + +#include <soc/gfx.h> +#include <soc/iosf.h> +#include <soc/pci_devs.h> +#include <soc/ramstage.h> + +#define GFX_TIMEOUT 100000 /* 100ms */ + +static const struct reg_script gpu_pre_vbios_script[] = { + /* Make sure GFX is bus master with MMIO access */ + REG_PCI_OR32(PCI_COMMAND, PCI_COMMAND_MASTER|PCI_COMMAND_MEMORY), + /* Display */ + REG_IOSF_WRITE(IOSF_PORT_PMC, PUNIT_PWRGT_CONTROL, 0xc0), + REG_IOSF_POLL(IOSF_PORT_PMC, PUNIT_PWRGT_STATUS, 0xc0, 0xc0, + GFX_TIMEOUT), + /* Tx/Rx Lanes */ + REG_IOSF_WRITE(IOSF_PORT_PMC, PUNIT_PWRGT_CONTROL, 0xfff0c0), + REG_IOSF_POLL(IOSF_PORT_PMC, PUNIT_PWRGT_STATUS, 0xfff0c0, 0xfff0c0, + GFX_TIMEOUT), + /* Common Lane */ + REG_IOSF_WRITE(IOSF_PORT_PMC, PUNIT_PWRGT_CONTROL, 0xfffcc0), + REG_IOSF_POLL(IOSF_PORT_PMC, PUNIT_PWRGT_STATUS, 0xfffcc0, 0xfffcc0, + GFX_TIMEOUT), + /* Ungating Tx only */ + REG_IOSF_WRITE(IOSF_PORT_PMC, PUNIT_PWRGT_CONTROL, 0xf00cc0), + REG_IOSF_POLL(IOSF_PORT_PMC, PUNIT_PWRGT_STATUS, 0xfffcc0, 0xf00cc0, + GFX_TIMEOUT), + /* Ungating Common Lane only */ + REG_IOSF_WRITE(IOSF_PORT_PMC, PUNIT_PWRGT_CONTROL, 0xf000c0), + REG_IOSF_POLL(IOSF_PORT_PMC, PUNIT_PWRGT_STATUS, 0xffffc0, 0xf000c0, + GFX_TIMEOUT), + /* Ungating Display */ + REG_IOSF_WRITE(IOSF_PORT_PMC, PUNIT_PWRGT_CONTROL, 0xf00000), + REG_IOSF_POLL(IOSF_PORT_PMC, PUNIT_PWRGT_STATUS, 0xfffff0, 0xf00000, + GFX_TIMEOUT), + REG_SCRIPT_END +}; + +static const struct reg_script gfx_post_vbios_script[] = { + /* Deassert Render Force-Wake */ + REG_RES_WRITE32(PCI_BASE_ADDRESS_0, 0x1300b0, 0x80000000), + REG_RES_POLL32(PCI_BASE_ADDRESS_0, 0x1300b4, 0x8000, 0, GFX_TIMEOUT), + /* Deassert Media Force-Wake */ + REG_RES_WRITE32(PCI_BASE_ADDRESS_0, 0x1300b8, 0x80000000), + REG_RES_POLL32(PCI_BASE_ADDRESS_0, 0x1300bc, 0x8000, 0, GFX_TIMEOUT), + /* Set Lock bits */ + REG_PCI_RMW32(GGC, 0xffffffff, 1), + REG_PCI_RMW32(GSM_BASE, 0xffffffff, 1), + REG_PCI_RMW32(GTT_BASE, 0xffffffff, 1), + REG_SCRIPT_END +}; + +static inline void gfx_run_script(device_t dev, const struct reg_script *ops) +{ + reg_script_run_on_dev(dev, ops); +} + +static void gfx_pre_vbios_init(device_t dev) +{ + printk(BIOS_INFO, "GFX: Pre VBIOS Init\n"); + gfx_run_script(dev, gpu_pre_vbios_script); +} + +static void gfx_post_vbios_init(device_t dev) +{ + printk(BIOS_INFO, "GFX: Post VBIOS Init\n"); + gfx_run_script(dev, gfx_post_vbios_script); +} + +static void gfx_init(device_t dev) +{ + /* Pre VBIOS Init */ + gfx_pre_vbios_init(dev); + + /* Run VBIOS */ + pci_dev_init(dev); + + /* Post VBIOS Init */ + gfx_post_vbios_init(dev); +} + +static struct device_operations gfx_device_ops = { + .read_resources = pci_dev_read_resources, + .set_resources = pci_dev_set_resources, + .enable_resources = pci_dev_enable_resources, + .init = gfx_init, + .ops_pci = &soc_pci_ops, +}; + +static const struct pci_driver gfx_driver __pci_driver = { + .ops = &gfx_device_ops, + .vendor = PCI_VENDOR_ID_INTEL, + .device = GFX_DEVID, +}; |