u-boot/drivers/pci/pci_rom.c
Simon Glass da62e1e861 video: Rename structs and functions to avoid VBE
Rename these to VESA, itself an abbreviation, to avoid a conflict with
Verified Boot for Embedded.

Rename this to avoid referencing VBE.

Signed-off-by: Simon Glass <sjg@chromium.org>
2022-08-12 08:14:23 -04:00

401 lines
10 KiB
C

// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (C) 2014 Google, Inc
*
* From coreboot, originally based on the Linux kernel (drivers/pci/pci.c).
*
* Modifications are:
* Copyright (C) 2003-2004 Linux Networx
* (Written by Eric Biederman <ebiederman@lnxi.com> for Linux Networx)
* Copyright (C) 2003-2006 Ronald G. Minnich <rminnich@gmail.com>
* Copyright (C) 2004-2005 Li-Ta Lo <ollie@lanl.gov>
* Copyright (C) 2005-2006 Tyan
* (Written by Yinghai Lu <yhlu@tyan.com> for Tyan)
* Copyright (C) 2005-2009 coresystems GmbH
* (Written by Stefan Reinauer <stepan@coresystems.de> for coresystems GmbH)
*
* PCI Bus Services, see include/linux/pci.h for further explanation.
*
* Copyright 1993 -- 1997 Drew Eckhardt, Frederic Potter,
* David Mosberger-Tang
*
* Copyright 1997 -- 1999 Martin Mares <mj@atrey.karlin.mff.cuni.cz>
*/
#define LOG_CATEGORY UCLASS_PCI
#include <common.h>
#include <bios_emul.h>
#include <bootstage.h>
#include <dm.h>
#include <errno.h>
#include <init.h>
#include <log.h>
#include <malloc.h>
#include <pci.h>
#include <pci_rom.h>
#include <vesa.h>
#include <video.h>
#include <acpi/acpi_s3.h>
#include <asm/global_data.h>
#include <linux/screen_info.h>
DECLARE_GLOBAL_DATA_PTR;
__weak bool board_should_run_oprom(struct udevice *dev)
{
#if defined(CONFIG_X86) && defined(CONFIG_HAVE_ACPI_RESUME)
if (gd->arch.prev_sleep_state == ACPI_S3) {
if (IS_ENABLED(CONFIG_S3_VGA_ROM_RUN))
return true;
else
return false;
}
#endif
return true;
}
__weak bool board_should_load_oprom(struct udevice *dev)
{
return true;
}
__weak uint32_t board_map_oprom_vendev(uint32_t vendev)
{
return vendev;
}
static int pci_rom_probe(struct udevice *dev, struct pci_rom_header **hdrp)
{
struct pci_child_plat *pplat = dev_get_parent_plat(dev);
struct pci_rom_header *rom_header;
struct pci_rom_data *rom_data;
u16 rom_vendor, rom_device;
u32 rom_class;
u32 vendev;
u32 mapped_vendev;
u32 rom_address;
vendev = pplat->vendor << 16 | pplat->device;
mapped_vendev = board_map_oprom_vendev(vendev);
if (vendev != mapped_vendev)
debug("Device ID mapped to %#08x\n", mapped_vendev);
#ifdef CONFIG_VGA_BIOS_ADDR
rom_address = CONFIG_VGA_BIOS_ADDR;
#else
dm_pci_read_config32(dev, PCI_ROM_ADDRESS, &rom_address);
if (rom_address == 0x00000000 || rom_address == 0xffffffff) {
debug("%s: rom_address=%x\n", __func__, rom_address);
return -ENOENT;
}
/* Enable expansion ROM address decoding. */
dm_pci_write_config32(dev, PCI_ROM_ADDRESS,
rom_address | PCI_ROM_ADDRESS_ENABLE);
#endif
debug("Option ROM address %x\n", rom_address);
rom_header = (struct pci_rom_header *)(unsigned long)rom_address;
debug("PCI expansion ROM, signature %#04x, INIT size %#04x, data ptr %#04x\n",
le16_to_cpu(rom_header->signature),
rom_header->size * 512, le16_to_cpu(rom_header->data));
if (le16_to_cpu(rom_header->signature) != PCI_ROM_HDR) {
printf("Incorrect expansion ROM header signature %04x\n",
le16_to_cpu(rom_header->signature));
#ifndef CONFIG_VGA_BIOS_ADDR
/* Disable expansion ROM address decoding */
dm_pci_write_config32(dev, PCI_ROM_ADDRESS, rom_address);
#endif
return -EINVAL;
}
rom_data = (((void *)rom_header) + le16_to_cpu(rom_header->data));
rom_vendor = le16_to_cpu(rom_data->vendor);
rom_device = le16_to_cpu(rom_data->device);
debug("PCI ROM image, vendor ID %04x, device ID %04x,\n",
rom_vendor, rom_device);
/* If the device id is mapped, a mismatch is expected */
if ((pplat->vendor != rom_vendor || pplat->device != rom_device) &&
(vendev == mapped_vendev)) {
printf("ID mismatch: vendor ID %04x, device ID %04x\n",
rom_vendor, rom_device);
/* Continue anyway */
}
rom_class = (le16_to_cpu(rom_data->class_hi) << 8) | rom_data->class_lo;
debug("PCI ROM image, Class Code %06x, Code Type %02x\n",
rom_class, rom_data->type);
if (pplat->class != rom_class) {
debug("Class Code mismatch ROM %06x, dev %06x\n",
rom_class, pplat->class);
}
*hdrp = rom_header;
return 0;
}
/**
* pci_rom_load() - Load a ROM image and return a pointer to it
*
* @rom_header: Pointer to ROM image
* @ram_headerp: Returns a pointer to the image in RAM
* @allocedp: Returns true if @ram_headerp was allocated and needs
* to be freed
* Return: 0 if OK, -ve on error. Note that @allocedp is set up regardless of
* the error state. Even if this function returns an error, it may have
* allocated memory.
*/
static int pci_rom_load(struct pci_rom_header *rom_header,
struct pci_rom_header **ram_headerp, bool *allocedp)
{
struct pci_rom_data *rom_data;
unsigned int rom_size;
unsigned int image_size = 0;
void *target;
*allocedp = false;
do {
/* Get next image, until we see an x86 version */
rom_header = (struct pci_rom_header *)((void *)rom_header +
image_size);
rom_data = (struct pci_rom_data *)((void *)rom_header +
le16_to_cpu(rom_header->data));
image_size = le16_to_cpu(rom_data->ilen) * 512;
} while ((rom_data->type != 0) && (rom_data->indicator == 0));
if (rom_data->type != 0)
return -EACCES;
rom_size = rom_header->size * 512;
#ifdef PCI_VGA_RAM_IMAGE_START
target = (void *)PCI_VGA_RAM_IMAGE_START;
#else
target = (void *)malloc(rom_size);
if (!target)
return -ENOMEM;
*allocedp = true;
#endif
if (target != rom_header) {
ulong start = get_timer(0);
debug("Copying VGA ROM Image from %p to %p, 0x%x bytes\n",
rom_header, target, rom_size);
memcpy(target, rom_header, rom_size);
if (memcmp(target, rom_header, rom_size)) {
printf("VGA ROM copy failed\n");
return -EFAULT;
}
debug("Copy took %lums\n", get_timer(start));
}
*ram_headerp = target;
return 0;
}
struct vesa_state mode_info;
void setup_video(struct screen_info *screen_info)
{
struct vesa_mode_info *vesa = &mode_info.vesa;
/* Sanity test on VESA parameters */
if (!vesa->x_resolution || !vesa->y_resolution)
return;
screen_info->orig_video_isVGA = VIDEO_TYPE_VLFB;
screen_info->lfb_width = vesa->x_resolution;
screen_info->lfb_height = vesa->y_resolution;
screen_info->lfb_depth = vesa->bits_per_pixel;
screen_info->lfb_linelength = vesa->bytes_per_scanline;
screen_info->lfb_base = vesa->phys_base_ptr;
screen_info->lfb_size =
ALIGN(screen_info->lfb_linelength * screen_info->lfb_height,
65536);
screen_info->lfb_size >>= 16;
screen_info->red_size = vesa->red_mask_size;
screen_info->red_pos = vesa->red_mask_pos;
screen_info->green_size = vesa->green_mask_size;
screen_info->green_pos = vesa->green_mask_pos;
screen_info->blue_size = vesa->blue_mask_size;
screen_info->blue_pos = vesa->blue_mask_pos;
screen_info->rsvd_size = vesa->reserved_mask_size;
screen_info->rsvd_pos = vesa->reserved_mask_pos;
}
int dm_pci_run_vga_bios(struct udevice *dev, int (*int15_handler)(void),
int exec_method)
{
struct pci_child_plat *pplat = dev_get_parent_plat(dev);
struct pci_rom_header *rom = NULL, *ram = NULL;
int vesa_mode = -1;
bool emulate, alloced;
int ret;
/* Only execute VGA ROMs */
if (((pplat->class >> 8) ^ PCI_CLASS_DISPLAY_VGA) & 0xff00) {
debug("%s: Class %#x, should be %#x\n", __func__, pplat->class,
PCI_CLASS_DISPLAY_VGA);
return -ENODEV;
}
if (!board_should_load_oprom(dev))
return log_msg_ret("Should not load OPROM", -ENXIO);
ret = pci_rom_probe(dev, &rom);
if (ret)
return ret;
ret = pci_rom_load(rom, &ram, &alloced);
if (ret)
goto err;
if (!board_should_run_oprom(dev)) {
ret = -ENXIO;
goto err;
}
#if defined(CONFIG_FRAMEBUFFER_SET_VESA_MODE) && \
defined(CONFIG_FRAMEBUFFER_VESA_MODE)
vesa_mode = CONFIG_FRAMEBUFFER_VESA_MODE;
#endif
debug("Selected vesa mode %#x\n", vesa_mode);
if (exec_method & PCI_ROM_USE_NATIVE) {
#ifdef CONFIG_X86
emulate = false;
#else
if (!(exec_method & PCI_ROM_ALLOW_FALLBACK)) {
printf("BIOS native execution is only available on x86\n");
ret = -ENOSYS;
goto err;
}
emulate = true;
#endif
} else {
#ifdef CONFIG_BIOSEMU
emulate = true;
#else
if (!(exec_method & PCI_ROM_ALLOW_FALLBACK)) {
printf("BIOS emulation not available - see CONFIG_BIOSEMU\n");
ret = -ENOSYS;
goto err;
}
emulate = false;
#endif
}
if (emulate) {
#ifdef CONFIG_BIOSEMU
BE_VGAInfo *info;
ret = biosemu_setup(dev, &info);
if (ret)
goto err;
biosemu_set_interrupt_handler(0x15, int15_handler);
ret = biosemu_run(dev, (uchar *)ram, 1 << 16, info,
true, vesa_mode, &mode_info);
if (ret)
goto err;
#endif
} else {
#if defined(CONFIG_X86) && (CONFIG_IS_ENABLED(X86_32BIT_INIT) || CONFIG_TPL)
bios_set_interrupt_handler(0x15, int15_handler);
bios_run_on_x86(dev, (unsigned long)ram, vesa_mode,
&mode_info);
#endif
}
debug("Final vesa mode %#x\n", mode_info.video_mode);
ret = 0;
err:
if (alloced)
free(ram);
return ret;
}
#ifdef CONFIG_DM_VIDEO
int vesa_setup_video_priv(struct vesa_mode_info *vesa,
struct video_priv *uc_priv,
struct video_uc_plat *plat)
{
if (!vesa->x_resolution)
return log_msg_ret("No x resolution", -ENXIO);
uc_priv->xsize = vesa->x_resolution;
uc_priv->ysize = vesa->y_resolution;
uc_priv->line_length = vesa->bytes_per_scanline;
switch (vesa->bits_per_pixel) {
case 32:
case 24:
uc_priv->bpix = VIDEO_BPP32;
break;
case 16:
uc_priv->bpix = VIDEO_BPP16;
break;
default:
return -EPROTONOSUPPORT;
}
/* Use double buffering if enabled */
if (IS_ENABLED(CONFIG_VIDEO_COPY) && plat->base)
plat->copy_base = vesa->phys_base_ptr;
else
plat->base = vesa->phys_base_ptr;
log_debug("base = %lx, copy_base = %lx\n", plat->base, plat->copy_base);
plat->size = vesa->bytes_per_scanline * vesa->y_resolution;
return 0;
}
int vesa_setup_video(struct udevice *dev, int (*int15_handler)(void))
{
struct video_uc_plat *plat = dev_get_uclass_plat(dev);
struct video_priv *uc_priv = dev_get_uclass_priv(dev);
int ret;
/* If we are running from EFI or coreboot, this can't work */
if (!ll_boot_init()) {
printf("Not available (previous bootloader prevents it)\n");
return -EPERM;
}
bootstage_start(BOOTSTAGE_ID_ACCUM_LCD, "vesa display");
ret = dm_pci_run_vga_bios(dev, int15_handler, PCI_ROM_USE_NATIVE |
PCI_ROM_ALLOW_FALLBACK);
bootstage_accum(BOOTSTAGE_ID_ACCUM_LCD);
if (ret) {
debug("failed to run video BIOS: %d\n", ret);
return ret;
}
ret = vesa_setup_video_priv(&mode_info.vesa, uc_priv, plat);
if (ret) {
if (ret == -ENFILE) {
/*
* See video-uclass.c for how to set up reserved memory
* in your video driver
*/
log_err("CONFIG_VIDEO_COPY enabled but driver '%s' set up no reserved memory\n",
dev->driver->name);
}
debug("No video mode configured\n");
return ret;
}
printf("Video: %dx%dx%d\n", uc_priv->xsize, uc_priv->ysize,
mode_info.vesa.bits_per_pixel);
return 0;
}
#endif