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284 lines
10 KiB
284 lines
10 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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* Generic System Framebuffers on x86 |
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* Copyright (c) 2012-2013 David Herrmann <[email protected]> |
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* |
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* EFI Quirks Copyright (c) 2006 Edgar Hucek <[email protected]> |
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*/ |
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/* |
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* EFI Quirks |
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* Several EFI systems do not correctly advertise their boot framebuffers. |
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* Hence, we use this static table of known broken machines and fix up the |
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* information so framebuffer drivers can load corectly. |
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*/ |
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#include <linux/dmi.h> |
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#include <linux/err.h> |
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#include <linux/efi.h> |
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#include <linux/init.h> |
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#include <linux/kernel.h> |
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#include <linux/mm.h> |
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#include <linux/pci.h> |
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#include <linux/screen_info.h> |
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#include <video/vga.h> |
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#include <asm/efi.h> |
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#include <asm/sysfb.h> |
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enum { |
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OVERRIDE_NONE = 0x0, |
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OVERRIDE_BASE = 0x1, |
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OVERRIDE_STRIDE = 0x2, |
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OVERRIDE_HEIGHT = 0x4, |
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OVERRIDE_WIDTH = 0x8, |
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}; |
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struct efifb_dmi_info efifb_dmi_list[] = { |
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[M_I17] = { "i17", 0x80010000, 1472 * 4, 1440, 900, OVERRIDE_NONE }, |
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[M_I20] = { "i20", 0x80010000, 1728 * 4, 1680, 1050, OVERRIDE_NONE }, /* guess */ |
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[M_I20_SR] = { "imac7", 0x40010000, 1728 * 4, 1680, 1050, OVERRIDE_NONE }, |
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[M_I24] = { "i24", 0x80010000, 2048 * 4, 1920, 1200, OVERRIDE_NONE }, /* guess */ |
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[M_I24_8_1] = { "imac8", 0xc0060000, 2048 * 4, 1920, 1200, OVERRIDE_NONE }, |
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[M_I24_10_1] = { "imac10", 0xc0010000, 2048 * 4, 1920, 1080, OVERRIDE_NONE }, |
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[M_I27_11_1] = { "imac11", 0xc0010000, 2560 * 4, 2560, 1440, OVERRIDE_NONE }, |
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[M_MINI]= { "mini", 0x80000000, 2048 * 4, 1024, 768, OVERRIDE_NONE }, |
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[M_MINI_3_1] = { "mini31", 0x40010000, 1024 * 4, 1024, 768, OVERRIDE_NONE }, |
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[M_MINI_4_1] = { "mini41", 0xc0010000, 2048 * 4, 1920, 1200, OVERRIDE_NONE }, |
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[M_MB] = { "macbook", 0x80000000, 2048 * 4, 1280, 800, OVERRIDE_NONE }, |
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[M_MB_5_1] = { "macbook51", 0x80010000, 2048 * 4, 1280, 800, OVERRIDE_NONE }, |
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[M_MB_6_1] = { "macbook61", 0x80010000, 2048 * 4, 1280, 800, OVERRIDE_NONE }, |
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[M_MB_7_1] = { "macbook71", 0x80010000, 2048 * 4, 1280, 800, OVERRIDE_NONE }, |
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[M_MBA] = { "mba", 0x80000000, 2048 * 4, 1280, 800, OVERRIDE_NONE }, |
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/* 11" Macbook Air 3,1 passes the wrong stride */ |
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[M_MBA_3] = { "mba3", 0, 2048 * 4, 0, 0, OVERRIDE_STRIDE }, |
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[M_MBP] = { "mbp", 0x80010000, 1472 * 4, 1440, 900, OVERRIDE_NONE }, |
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[M_MBP_2] = { "mbp2", 0, 0, 0, 0, OVERRIDE_NONE }, /* placeholder */ |
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[M_MBP_2_2] = { "mbp22", 0x80010000, 1472 * 4, 1440, 900, OVERRIDE_NONE }, |
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[M_MBP_SR] = { "mbp3", 0x80030000, 2048 * 4, 1440, 900, OVERRIDE_NONE }, |
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[M_MBP_4] = { "mbp4", 0xc0060000, 2048 * 4, 1920, 1200, OVERRIDE_NONE }, |
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[M_MBP_5_1] = { "mbp51", 0xc0010000, 2048 * 4, 1440, 900, OVERRIDE_NONE }, |
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[M_MBP_5_2] = { "mbp52", 0xc0010000, 2048 * 4, 1920, 1200, OVERRIDE_NONE }, |
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[M_MBP_5_3] = { "mbp53", 0xd0010000, 2048 * 4, 1440, 900, OVERRIDE_NONE }, |
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[M_MBP_6_1] = { "mbp61", 0x90030000, 2048 * 4, 1920, 1200, OVERRIDE_NONE }, |
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[M_MBP_6_2] = { "mbp62", 0x90030000, 2048 * 4, 1680, 1050, OVERRIDE_NONE }, |
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[M_MBP_7_1] = { "mbp71", 0xc0010000, 2048 * 4, 1280, 800, OVERRIDE_NONE }, |
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[M_MBP_8_2] = { "mbp82", 0x90010000, 1472 * 4, 1440, 900, OVERRIDE_NONE }, |
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[M_UNKNOWN] = { NULL, 0, 0, 0, 0, OVERRIDE_NONE } |
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}; |
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void efifb_setup_from_dmi(struct screen_info *si, const char *opt) |
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{ |
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int i; |
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for (i = 0; i < M_UNKNOWN; i++) { |
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if (efifb_dmi_list[i].base != 0 && |
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!strcmp(opt, efifb_dmi_list[i].optname)) { |
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si->lfb_base = efifb_dmi_list[i].base; |
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si->lfb_linelength = efifb_dmi_list[i].stride; |
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si->lfb_width = efifb_dmi_list[i].width; |
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si->lfb_height = efifb_dmi_list[i].height; |
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} |
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} |
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} |
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#define choose_value(dmivalue, fwvalue, field, flags) ({ \ |
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typeof(fwvalue) _ret_ = fwvalue; \ |
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if ((flags) & (field)) \ |
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_ret_ = dmivalue; \ |
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else if ((fwvalue) == 0) \ |
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_ret_ = dmivalue; \ |
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_ret_; \ |
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}) |
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static int __init efifb_set_system(const struct dmi_system_id *id) |
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{ |
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struct efifb_dmi_info *info = id->driver_data; |
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if (info->base == 0 && info->height == 0 && info->width == 0 && |
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info->stride == 0) |
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return 0; |
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/* Trust the bootloader over the DMI tables */ |
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if (screen_info.lfb_base == 0) { |
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#if defined(CONFIG_PCI) |
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struct pci_dev *dev = NULL; |
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int found_bar = 0; |
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#endif |
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if (info->base) { |
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screen_info.lfb_base = choose_value(info->base, |
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screen_info.lfb_base, OVERRIDE_BASE, |
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info->flags); |
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#if defined(CONFIG_PCI) |
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/* make sure that the address in the table is actually |
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* on a VGA device's PCI BAR */ |
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for_each_pci_dev(dev) { |
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int i; |
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if ((dev->class >> 8) != PCI_CLASS_DISPLAY_VGA) |
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continue; |
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for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) { |
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resource_size_t start, end; |
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unsigned long flags; |
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flags = pci_resource_flags(dev, i); |
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if (!(flags & IORESOURCE_MEM)) |
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continue; |
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if (flags & IORESOURCE_UNSET) |
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continue; |
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if (pci_resource_len(dev, i) == 0) |
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continue; |
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start = pci_resource_start(dev, i); |
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end = pci_resource_end(dev, i); |
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if (screen_info.lfb_base >= start && |
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screen_info.lfb_base < end) { |
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found_bar = 1; |
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break; |
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} |
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} |
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} |
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if (!found_bar) |
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screen_info.lfb_base = 0; |
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#endif |
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} |
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} |
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if (screen_info.lfb_base) { |
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screen_info.lfb_linelength = choose_value(info->stride, |
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screen_info.lfb_linelength, OVERRIDE_STRIDE, |
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info->flags); |
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screen_info.lfb_width = choose_value(info->width, |
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screen_info.lfb_width, OVERRIDE_WIDTH, |
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info->flags); |
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screen_info.lfb_height = choose_value(info->height, |
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screen_info.lfb_height, OVERRIDE_HEIGHT, |
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info->flags); |
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if (screen_info.orig_video_isVGA == 0) |
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screen_info.orig_video_isVGA = VIDEO_TYPE_EFI; |
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} else { |
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screen_info.lfb_linelength = 0; |
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screen_info.lfb_width = 0; |
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screen_info.lfb_height = 0; |
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screen_info.orig_video_isVGA = 0; |
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return 0; |
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} |
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printk(KERN_INFO "efifb: dmi detected %s - framebuffer at 0x%08x " |
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"(%dx%d, stride %d)\n", id->ident, |
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screen_info.lfb_base, screen_info.lfb_width, |
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screen_info.lfb_height, screen_info.lfb_linelength); |
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return 1; |
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} |
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#define EFIFB_DMI_SYSTEM_ID(vendor, name, enumid) \ |
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{ \ |
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efifb_set_system, \ |
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name, \ |
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{ \ |
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DMI_MATCH(DMI_BIOS_VENDOR, vendor), \ |
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DMI_MATCH(DMI_PRODUCT_NAME, name) \ |
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}, \ |
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&efifb_dmi_list[enumid] \ |
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} |
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static const struct dmi_system_id efifb_dmi_system_table[] __initconst = { |
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EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "iMac4,1", M_I17), |
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/* At least one of these two will be right; maybe both? */ |
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EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "iMac5,1", M_I20), |
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EFIFB_DMI_SYSTEM_ID("Apple Inc.", "iMac5,1", M_I20), |
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/* At least one of these two will be right; maybe both? */ |
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EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "iMac6,1", M_I24), |
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EFIFB_DMI_SYSTEM_ID("Apple Inc.", "iMac6,1", M_I24), |
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EFIFB_DMI_SYSTEM_ID("Apple Inc.", "iMac7,1", M_I20_SR), |
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EFIFB_DMI_SYSTEM_ID("Apple Inc.", "iMac8,1", M_I24_8_1), |
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EFIFB_DMI_SYSTEM_ID("Apple Inc.", "iMac10,1", M_I24_10_1), |
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EFIFB_DMI_SYSTEM_ID("Apple Inc.", "iMac11,1", M_I27_11_1), |
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EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "Macmini1,1", M_MINI), |
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EFIFB_DMI_SYSTEM_ID("Apple Inc.", "Macmini3,1", M_MINI_3_1), |
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EFIFB_DMI_SYSTEM_ID("Apple Inc.", "Macmini4,1", M_MINI_4_1), |
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EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "MacBook1,1", M_MB), |
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/* At least one of these two will be right; maybe both? */ |
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EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "MacBook2,1", M_MB), |
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EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBook2,1", M_MB), |
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/* At least one of these two will be right; maybe both? */ |
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EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "MacBook3,1", M_MB), |
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EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBook3,1", M_MB), |
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EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBook4,1", M_MB), |
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EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBook5,1", M_MB_5_1), |
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EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBook6,1", M_MB_6_1), |
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EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBook7,1", M_MB_7_1), |
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EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookAir1,1", M_MBA), |
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EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookAir3,1", M_MBA_3), |
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EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "MacBookPro1,1", M_MBP), |
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EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "MacBookPro2,1", M_MBP_2), |
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EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "MacBookPro2,2", M_MBP_2_2), |
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EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookPro2,1", M_MBP_2), |
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EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "MacBookPro3,1", M_MBP_SR), |
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EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookPro3,1", M_MBP_SR), |
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EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookPro4,1", M_MBP_4), |
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EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookPro5,1", M_MBP_5_1), |
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EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookPro5,2", M_MBP_5_2), |
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EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookPro5,3", M_MBP_5_3), |
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EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookPro6,1", M_MBP_6_1), |
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EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookPro6,2", M_MBP_6_2), |
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EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookPro7,1", M_MBP_7_1), |
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EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookPro8,2", M_MBP_8_2), |
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{}, |
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}; |
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/* |
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* Some devices have a portrait LCD but advertise a landscape resolution (and |
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* pitch). We simply swap width and height for these devices so that we can |
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* correctly deal with some of them coming with multiple resolutions. |
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*/ |
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static const struct dmi_system_id efifb_dmi_swap_width_height[] __initconst = { |
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{ |
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/* |
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* Lenovo MIIX310-10ICR, only some batches have the troublesome |
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* 800x1280 portrait screen. Luckily the portrait version has |
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* its own BIOS version, so we match on that. |
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*/ |
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.matches = { |
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DMI_EXACT_MATCH(DMI_SYS_VENDOR, "LENOVO"), |
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DMI_EXACT_MATCH(DMI_PRODUCT_VERSION, "MIIX 310-10ICR"), |
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DMI_EXACT_MATCH(DMI_BIOS_VERSION, "1HCN44WW"), |
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}, |
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}, |
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{ |
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/* Lenovo MIIX 320-10ICR with 800x1280 portrait screen */ |
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.matches = { |
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DMI_EXACT_MATCH(DMI_SYS_VENDOR, "LENOVO"), |
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DMI_EXACT_MATCH(DMI_PRODUCT_VERSION, |
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"Lenovo MIIX 320-10ICR"), |
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}, |
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}, |
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{ |
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/* Lenovo D330 with 800x1280 or 1200x1920 portrait screen */ |
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.matches = { |
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DMI_EXACT_MATCH(DMI_SYS_VENDOR, "LENOVO"), |
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DMI_EXACT_MATCH(DMI_PRODUCT_VERSION, |
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"Lenovo ideapad D330-10IGM"), |
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}, |
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}, |
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{}, |
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}; |
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__init void sysfb_apply_efi_quirks(void) |
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{ |
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if (screen_info.orig_video_isVGA != VIDEO_TYPE_EFI || |
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!(screen_info.capabilities & VIDEO_CAPABILITY_SKIP_QUIRKS)) |
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dmi_check_system(efifb_dmi_system_table); |
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if (screen_info.orig_video_isVGA == VIDEO_TYPE_EFI && |
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dmi_check_system(efifb_dmi_swap_width_height)) { |
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u16 temp = screen_info.lfb_width; |
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screen_info.lfb_width = screen_info.lfb_height; |
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screen_info.lfb_height = temp; |
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screen_info.lfb_linelength = 4 * screen_info.lfb_width; |
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} |
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}
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