upstream u-boot with additional patches for our devices/boards:
https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ;
Gbit ethernet patch for some LIME2 revisions ;
with SPI flash support
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
420 lines
13 KiB
420 lines
13 KiB
/****************************************************************************
|
|
*
|
|
* Video BOOT Graphics Card POST Module
|
|
*
|
|
* ========================================================================
|
|
* Copyright (C) 2007 Freescale Semiconductor, Inc.
|
|
* Jason Jin <Jason.jin@freescale.com>
|
|
*
|
|
* Copyright (C) 1991-2004 SciTech Software, Inc. All rights reserved.
|
|
*
|
|
* This file may be distributed and/or modified under the terms of the
|
|
* GNU General Public License version 2.0 as published by the Free
|
|
* Software Foundation and appearing in the file LICENSE.GPL included
|
|
* in the packaging of this file.
|
|
*
|
|
* Licensees holding a valid Commercial License for this product from
|
|
* SciTech Software, Inc. may use this file in accordance with the
|
|
* Commercial License Agreement provided with the Software.
|
|
*
|
|
* This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING
|
|
* THE WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
|
* PURPOSE.
|
|
*
|
|
* See http://www.scitechsoft.com/license/ for information about
|
|
* the licensing options available and how to purchase a Commercial
|
|
* License Agreement.
|
|
*
|
|
* Contact license@scitechsoft.com if any conditions of this licensing
|
|
* are not clear to you, or you have questions about licensing options.
|
|
*
|
|
* ========================================================================
|
|
*
|
|
* Language: ANSI C
|
|
* Environment: Linux Kernel
|
|
* Developer: Kendall Bennett
|
|
*
|
|
* Description: Module to implement booting PCI/AGP controllers on the
|
|
* bus. We use the x86 real mode emulator to run the BIOS on
|
|
* graphics controllers to bring the cards up.
|
|
*
|
|
* Note that at present this module does *not* support
|
|
* multiple controllers.
|
|
*
|
|
* The orignal name of this file is warmboot.c.
|
|
* Jason ported this file to u-boot to run the ATI video card
|
|
* BIOS in u-boot.
|
|
****************************************************************************/
|
|
#include <common.h>
|
|
#include <bios_emul.h>
|
|
#include <errno.h>
|
|
#include <malloc.h>
|
|
#include <vbe.h>
|
|
#include "biosemui.h"
|
|
|
|
/* Length of the BIOS image */
|
|
#define MAX_BIOSLEN (128 * 1024L)
|
|
|
|
/* Place to save PCI BAR's that we change and later restore */
|
|
static u32 saveROMBaseAddress;
|
|
static u32 saveBaseAddress10;
|
|
static u32 saveBaseAddress14;
|
|
static u32 saveBaseAddress18;
|
|
static u32 saveBaseAddress20;
|
|
|
|
static void atibios_set_vesa_mode(RMREGS *regs, int vesa_mode,
|
|
struct vbe_mode_info *mode_info)
|
|
{
|
|
debug("VBE: Setting VESA mode %#04x\n", vesa_mode);
|
|
/* request linear framebuffer mode */
|
|
vesa_mode |= (1 << 14);
|
|
/* request clearing of framebuffer */
|
|
vesa_mode &= ~(1 << 15);
|
|
regs->e.eax = VESA_SET_MODE;
|
|
regs->e.ebx = vesa_mode;
|
|
BE_int86(0x10, regs, regs);
|
|
|
|
int offset = 0x2000;
|
|
void *buffer = (void *)(M.mem_base + offset);
|
|
|
|
u16 buffer_seg = (((unsigned long)offset) >> 4) & 0xff00;
|
|
u16 buffer_adr = ((unsigned long)offset) & 0xffff;
|
|
regs->e.eax = VESA_GET_MODE_INFO;
|
|
regs->e.ebx = 0;
|
|
regs->e.ecx = vesa_mode;
|
|
regs->e.edx = 0;
|
|
regs->e.esi = buffer_seg;
|
|
regs->e.edi = buffer_adr;
|
|
BE_int86(0x10, regs, regs);
|
|
memcpy(mode_info->mode_info_block, buffer,
|
|
sizeof(struct vbe_mode_info));
|
|
mode_info->valid = true;
|
|
|
|
vesa_mode |= (1 << 14);
|
|
/* request clearing of framebuffer */
|
|
vesa_mode &= ~(1 << 15);
|
|
regs->e.eax = VESA_SET_MODE;
|
|
regs->e.ebx = vesa_mode;
|
|
BE_int86(0x10, regs, regs);
|
|
}
|
|
|
|
/****************************************************************************
|
|
PARAMETERS:
|
|
pcidev - PCI device info for the video card on the bus to boot
|
|
vga_info - BIOS emulator VGA info structure
|
|
|
|
REMARKS:
|
|
This function executes the BIOS POST code on the controller. We assume that
|
|
at this stage the controller has its I/O and memory space enabled and
|
|
that all other controllers are in a disabled state.
|
|
****************************************************************************/
|
|
static void PCI_doBIOSPOST(pci_dev_t pcidev, BE_VGAInfo *vga_info,
|
|
int vesa_mode, struct vbe_mode_info *mode_info)
|
|
{
|
|
RMREGS regs;
|
|
RMSREGS sregs;
|
|
|
|
/* Determine the value to store in AX for BIOS POST. Per the PCI specs,
|
|
AH must contain the bus and AL must contain the devfn, encoded as
|
|
(dev << 3) | fn
|
|
*/
|
|
memset(®s, 0, sizeof(regs));
|
|
memset(&sregs, 0, sizeof(sregs));
|
|
regs.x.ax = ((int)PCI_BUS(pcidev) << 8) |
|
|
((int)PCI_DEV(pcidev) << 3) | (int)PCI_FUNC(pcidev);
|
|
|
|
/*Setup the X86 emulator for the VGA BIOS*/
|
|
BE_setVGA(vga_info);
|
|
|
|
/*Execute the BIOS POST code*/
|
|
BE_callRealMode(0xC000, 0x0003, ®s, &sregs);
|
|
|
|
/*Cleanup and exit*/
|
|
BE_getVGA(vga_info);
|
|
|
|
if (vesa_mode != -1)
|
|
atibios_set_vesa_mode(®s, vesa_mode, mode_info);
|
|
}
|
|
|
|
/****************************************************************************
|
|
PARAMETERS:
|
|
pcidev - PCI device info for the video card on the bus
|
|
bar - Place to return the base address register offset to use
|
|
|
|
RETURNS:
|
|
The address to use to map the secondary BIOS (AGP devices)
|
|
|
|
REMARKS:
|
|
Searches all the PCI base address registers for the device looking for a
|
|
memory mapping that is large enough to hold our ROM BIOS. We usually end up
|
|
finding the framebuffer mapping (usually BAR 0x10), and we use this mapping
|
|
to map the BIOS for the device into. We use a mapping that is already
|
|
assigned to the device to ensure the memory range will be passed through
|
|
by any PCI->PCI or AGP->PCI bridge that may be present.
|
|
|
|
NOTE: Usually this function is only used for AGP devices, but it may be
|
|
used for PCI devices that have already been POST'ed and the BIOS
|
|
ROM base address has been zero'ed out.
|
|
|
|
NOTE: This function leaves the original memory aperture disabled by leaving
|
|
it programmed to all 1's. It must be restored to the correct value
|
|
later.
|
|
****************************************************************************/
|
|
static u32 PCI_findBIOSAddr(pci_dev_t pcidev, int *bar)
|
|
{
|
|
u32 base, size;
|
|
|
|
for (*bar = 0x10; *bar <= 0x14; (*bar) += 4) {
|
|
pci_read_config_dword(pcidev, *bar, &base);
|
|
if (!(base & 0x1)) {
|
|
pci_write_config_dword(pcidev, *bar, 0xFFFFFFFF);
|
|
pci_read_config_dword(pcidev, *bar, &size);
|
|
size = ~(size & ~0xFF) + 1;
|
|
if (size >= MAX_BIOSLEN)
|
|
return base & ~0xFF;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/****************************************************************************
|
|
REMARKS:
|
|
Some non-x86 Linux kernels map PCI relocateable I/O to values that
|
|
are above 64K, which will not work with the BIOS image that requires
|
|
the offset for the I/O ports to be a maximum of 16-bits. Ideally
|
|
someone should fix the kernel to map the I/O ports for VGA compatible
|
|
devices to a different location (or just all I/O ports since it is
|
|
unlikely you can have enough devices in the machine to use up all
|
|
64K of the I/O space - a total of more than 256 cards would be
|
|
necessary).
|
|
|
|
Anyway to fix this we change all I/O mapped base registers and
|
|
chop off the top bits.
|
|
****************************************************************************/
|
|
static void PCI_fixupIObase(pci_dev_t pcidev, int reg, u32 * base)
|
|
{
|
|
if ((*base & 0x1) && (*base > 0xFFFE)) {
|
|
*base &= 0xFFFF;
|
|
pci_write_config_dword(pcidev, reg, *base);
|
|
|
|
}
|
|
}
|
|
|
|
/****************************************************************************
|
|
PARAMETERS:
|
|
pcidev - PCI device info for the video card on the bus
|
|
|
|
RETURNS:
|
|
Pointers to the mapped BIOS image
|
|
|
|
REMARKS:
|
|
Maps a pointer to the BIOS image on the graphics card on the PCI bus.
|
|
****************************************************************************/
|
|
void *PCI_mapBIOSImage(pci_dev_t pcidev)
|
|
{
|
|
u32 BIOSImageBus;
|
|
int BIOSImageBAR;
|
|
u8 *BIOSImage;
|
|
|
|
/*Save PCI BAR registers that might get changed*/
|
|
pci_read_config_dword(pcidev, PCI_ROM_ADDRESS, &saveROMBaseAddress);
|
|
pci_read_config_dword(pcidev, PCI_BASE_ADDRESS_0, &saveBaseAddress10);
|
|
pci_read_config_dword(pcidev, PCI_BASE_ADDRESS_1, &saveBaseAddress14);
|
|
pci_read_config_dword(pcidev, PCI_BASE_ADDRESS_2, &saveBaseAddress18);
|
|
pci_read_config_dword(pcidev, PCI_BASE_ADDRESS_4, &saveBaseAddress20);
|
|
|
|
/*Fix up I/O base registers to less than 64K */
|
|
if(saveBaseAddress14 != 0)
|
|
PCI_fixupIObase(pcidev, PCI_BASE_ADDRESS_1, &saveBaseAddress14);
|
|
else
|
|
PCI_fixupIObase(pcidev, PCI_BASE_ADDRESS_4, &saveBaseAddress20);
|
|
|
|
/* Some cards have problems that stop us from being able to read the
|
|
BIOS image from the ROM BAR. To fix this we have to do some chipset
|
|
specific programming for different cards to solve this problem.
|
|
*/
|
|
|
|
BIOSImageBus = PCI_findBIOSAddr(pcidev, &BIOSImageBAR);
|
|
if (BIOSImageBus == 0) {
|
|
printf("Find bios addr error\n");
|
|
return NULL;
|
|
}
|
|
|
|
BIOSImage = pci_bus_to_virt(pcidev, BIOSImageBus,
|
|
PCI_REGION_MEM, 0, MAP_NOCACHE);
|
|
|
|
/*Change the PCI BAR registers to map it onto the bus.*/
|
|
pci_write_config_dword(pcidev, BIOSImageBAR, 0);
|
|
pci_write_config_dword(pcidev, PCI_ROM_ADDRESS, BIOSImageBus | 0x1);
|
|
|
|
udelay(1);
|
|
|
|
/*Check that the BIOS image is valid. If not fail, or return the
|
|
compiled in BIOS image if that option was enabled
|
|
*/
|
|
if (BIOSImage[0] != 0x55 || BIOSImage[1] != 0xAA || BIOSImage[2] == 0) {
|
|
return NULL;
|
|
}
|
|
|
|
return BIOSImage;
|
|
}
|
|
|
|
/****************************************************************************
|
|
PARAMETERS:
|
|
pcidev - PCI device info for the video card on the bus
|
|
|
|
REMARKS:
|
|
Unmaps the BIOS image for the device and restores framebuffer mappings
|
|
****************************************************************************/
|
|
void PCI_unmapBIOSImage(pci_dev_t pcidev, void *BIOSImage)
|
|
{
|
|
pci_write_config_dword(pcidev, PCI_ROM_ADDRESS, saveROMBaseAddress);
|
|
pci_write_config_dword(pcidev, PCI_BASE_ADDRESS_0, saveBaseAddress10);
|
|
pci_write_config_dword(pcidev, PCI_BASE_ADDRESS_1, saveBaseAddress14);
|
|
pci_write_config_dword(pcidev, PCI_BASE_ADDRESS_2, saveBaseAddress18);
|
|
pci_write_config_dword(pcidev, PCI_BASE_ADDRESS_4, saveBaseAddress20);
|
|
}
|
|
|
|
/****************************************************************************
|
|
PARAMETERS:
|
|
pcidev - PCI device info for the video card on the bus to boot
|
|
VGAInfo - BIOS emulator VGA info structure
|
|
|
|
RETURNS:
|
|
true if successfully initialised, false if not.
|
|
|
|
REMARKS:
|
|
Loads and POST's the display controllers BIOS, directly from the BIOS
|
|
image we can extract over the PCI bus.
|
|
****************************************************************************/
|
|
static int PCI_postController(pci_dev_t pcidev, uchar *bios_rom, int bios_len,
|
|
BE_VGAInfo *vga_info, int vesa_mode,
|
|
struct vbe_mode_info *mode_info)
|
|
{
|
|
u32 bios_image_len;
|
|
uchar *mapped_bios;
|
|
uchar *copy_of_bios;
|
|
|
|
if (bios_rom) {
|
|
copy_of_bios = bios_rom;
|
|
bios_image_len = bios_len;
|
|
} else {
|
|
/*
|
|
* Allocate memory to store copy of BIOS from display
|
|
* controller
|
|
*/
|
|
mapped_bios = PCI_mapBIOSImage(pcidev);
|
|
if (mapped_bios == NULL) {
|
|
printf("videoboot: Video ROM failed to map!\n");
|
|
return false;
|
|
}
|
|
|
|
bios_image_len = mapped_bios[2] * 512;
|
|
|
|
copy_of_bios = malloc(bios_image_len);
|
|
if (copy_of_bios == NULL) {
|
|
printf("videoboot: Out of memory!\n");
|
|
return false;
|
|
}
|
|
memcpy(copy_of_bios, mapped_bios, bios_image_len);
|
|
PCI_unmapBIOSImage(pcidev, mapped_bios);
|
|
}
|
|
|
|
/*Save information in vga_info structure*/
|
|
vga_info->function = PCI_FUNC(pcidev);
|
|
vga_info->device = PCI_DEV(pcidev);
|
|
vga_info->bus = PCI_BUS(pcidev);
|
|
vga_info->pcidev = pcidev;
|
|
vga_info->BIOSImage = copy_of_bios;
|
|
vga_info->BIOSImageLen = bios_image_len;
|
|
|
|
/*Now execute the BIOS POST for the device*/
|
|
if (copy_of_bios[0] != 0x55 || copy_of_bios[1] != 0xAA) {
|
|
printf("videoboot: Video ROM image is invalid!\n");
|
|
return false;
|
|
}
|
|
|
|
PCI_doBIOSPOST(pcidev, vga_info, vesa_mode, mode_info);
|
|
|
|
/*Reset the size of the BIOS image to the final size*/
|
|
vga_info->BIOSImageLen = copy_of_bios[2] * 512;
|
|
return true;
|
|
}
|
|
|
|
int biosemu_setup(pci_dev_t pcidev, BE_VGAInfo **vga_infop)
|
|
{
|
|
BE_VGAInfo *VGAInfo;
|
|
|
|
printf("videoboot: Booting PCI video card bus %d, function %d, device %d\n",
|
|
PCI_BUS(pcidev), PCI_FUNC(pcidev), PCI_DEV(pcidev));
|
|
|
|
/*Initialise the x86 BIOS emulator*/
|
|
if ((VGAInfo = malloc(sizeof(*VGAInfo))) == NULL) {
|
|
printf("videoboot: Out of memory!\n");
|
|
return -ENOMEM;
|
|
}
|
|
memset(VGAInfo, 0, sizeof(*VGAInfo));
|
|
BE_init(0, 65536, VGAInfo, 0);
|
|
*vga_infop = VGAInfo;
|
|
|
|
return 0;
|
|
}
|
|
|
|
void biosemu_set_interrupt_handler(int intnum, int (*int_func)(void))
|
|
{
|
|
X86EMU_setupIntrFunc(intnum, (X86EMU_intrFuncs)int_func);
|
|
}
|
|
|
|
int biosemu_run(pci_dev_t pcidev, uchar *bios_rom, int bios_len,
|
|
BE_VGAInfo *vga_info, int clean_up, int vesa_mode,
|
|
struct vbe_mode_info *mode_info)
|
|
{
|
|
/*Post all the display controller BIOS'es*/
|
|
if (!PCI_postController(pcidev, bios_rom, bios_len, vga_info,
|
|
vesa_mode, mode_info))
|
|
return -EINVAL;
|
|
|
|
/*
|
|
* Cleanup and exit the emulator if requested. If the BIOS emulator
|
|
* is needed after booting the card, we will not call BE_exit and
|
|
* leave it enabled for further use (ie: VESA driver etc).
|
|
*/
|
|
if (clean_up) {
|
|
BE_exit();
|
|
if (vga_info->BIOSImage)
|
|
free(vga_info->BIOSImage);
|
|
free(vga_info);
|
|
vga_info = NULL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/****************************************************************************
|
|
PARAMETERS:
|
|
pcidev - PCI device info for the video card on the bus to boot
|
|
pVGAInfo - Place to return VGA info structure is requested
|
|
cleanUp - true to clean up on exit, false to leave emulator active
|
|
|
|
REMARKS:
|
|
Boots the PCI/AGP video card on the bus using the Video ROM BIOS image
|
|
and the X86 BIOS emulator module.
|
|
****************************************************************************/
|
|
int BootVideoCardBIOS(pci_dev_t pcidev, BE_VGAInfo **pVGAInfo, int clean_up)
|
|
{
|
|
BE_VGAInfo *VGAInfo;
|
|
int ret;
|
|
|
|
ret = biosemu_setup(pcidev, &VGAInfo);
|
|
if (ret)
|
|
return false;
|
|
ret = biosemu_run(pcidev, NULL, 0, VGAInfo, clean_up, -1, NULL);
|
|
if (ret)
|
|
return false;
|
|
|
|
/* Return VGA info pointer if the caller requested it*/
|
|
if (pVGAInfo)
|
|
*pVGAInfo = VGAInfo;
|
|
|
|
return true;
|
|
}
|
|
|