[Feature]add MT2731_MP2_MR2_SVN388 baseline version
Change-Id: Ief04314834b31e27effab435d3ca8ba33b499059
diff --git a/src/kernel/linux/v4.14/drivers/video/fbdev/efifb.c b/src/kernel/linux/v4.14/drivers/video/fbdev/efifb.c
new file mode 100644
index 0000000..d1bf9c2
--- /dev/null
+++ b/src/kernel/linux/v4.14/drivers/video/fbdev/efifb.c
@@ -0,0 +1,438 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Framebuffer driver for EFI/UEFI based system
+ *
+ * (c) 2006 Edgar Hucek <gimli@dark-green.com>
+ * Original efi driver written by Gerd Knorr <kraxel@goldbach.in-berlin.de>
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/efi.h>
+#include <linux/errno.h>
+#include <linux/fb.h>
+#include <linux/pci.h>
+#include <linux/platform_device.h>
+#include <linux/screen_info.h>
+#include <video/vga.h>
+#include <asm/efi.h>
+
+static bool request_mem_succeeded = false;
+static bool nowc = false;
+
+static struct fb_var_screeninfo efifb_defined = {
+ .activate = FB_ACTIVATE_NOW,
+ .height = -1,
+ .width = -1,
+ .right_margin = 32,
+ .upper_margin = 16,
+ .lower_margin = 4,
+ .vsync_len = 4,
+ .vmode = FB_VMODE_NONINTERLACED,
+};
+
+static struct fb_fix_screeninfo efifb_fix = {
+ .id = "EFI VGA",
+ .type = FB_TYPE_PACKED_PIXELS,
+ .accel = FB_ACCEL_NONE,
+ .visual = FB_VISUAL_TRUECOLOR,
+};
+
+static int efifb_setcolreg(unsigned regno, unsigned red, unsigned green,
+ unsigned blue, unsigned transp,
+ struct fb_info *info)
+{
+ /*
+ * Set a single color register. The values supplied are
+ * already rounded down to the hardware's capabilities
+ * (according to the entries in the `var' structure). Return
+ * != 0 for invalid regno.
+ */
+
+ if (regno >= info->cmap.len)
+ return 1;
+
+ if (regno < 16) {
+ red >>= 16 - info->var.red.length;
+ green >>= 16 - info->var.green.length;
+ blue >>= 16 - info->var.blue.length;
+ ((u32 *)(info->pseudo_palette))[regno] =
+ (red << info->var.red.offset) |
+ (green << info->var.green.offset) |
+ (blue << info->var.blue.offset);
+ }
+ return 0;
+}
+
+static void efifb_destroy(struct fb_info *info)
+{
+ if (info->screen_base)
+ iounmap(info->screen_base);
+ if (request_mem_succeeded)
+ release_mem_region(info->apertures->ranges[0].base,
+ info->apertures->ranges[0].size);
+ fb_dealloc_cmap(&info->cmap);
+}
+
+static struct fb_ops efifb_ops = {
+ .owner = THIS_MODULE,
+ .fb_destroy = efifb_destroy,
+ .fb_setcolreg = efifb_setcolreg,
+ .fb_fillrect = cfb_fillrect,
+ .fb_copyarea = cfb_copyarea,
+ .fb_imageblit = cfb_imageblit,
+};
+
+static int efifb_setup(char *options)
+{
+ char *this_opt;
+
+ if (options && *options) {
+ while ((this_opt = strsep(&options, ",")) != NULL) {
+ if (!*this_opt) continue;
+
+ efifb_setup_from_dmi(&screen_info, this_opt);
+
+ if (!strncmp(this_opt, "base:", 5))
+ screen_info.lfb_base = simple_strtoul(this_opt+5, NULL, 0);
+ else if (!strncmp(this_opt, "stride:", 7))
+ screen_info.lfb_linelength = simple_strtoul(this_opt+7, NULL, 0) * 4;
+ else if (!strncmp(this_opt, "height:", 7))
+ screen_info.lfb_height = simple_strtoul(this_opt+7, NULL, 0);
+ else if (!strncmp(this_opt, "width:", 6))
+ screen_info.lfb_width = simple_strtoul(this_opt+6, NULL, 0);
+ else if (!strcmp(this_opt, "nowc"))
+ nowc = true;
+ }
+ }
+
+ return 0;
+}
+
+static inline bool fb_base_is_valid(void)
+{
+ if (screen_info.lfb_base)
+ return true;
+
+ if (!(screen_info.capabilities & VIDEO_CAPABILITY_64BIT_BASE))
+ return false;
+
+ if (screen_info.ext_lfb_base)
+ return true;
+
+ return false;
+}
+
+#define efifb_attr_decl(name, fmt) \
+static ssize_t name##_show(struct device *dev, \
+ struct device_attribute *attr, \
+ char *buf) \
+{ \
+ return sprintf(buf, fmt "\n", (screen_info.lfb_##name)); \
+} \
+static DEVICE_ATTR_RO(name)
+
+efifb_attr_decl(base, "0x%x");
+efifb_attr_decl(linelength, "%u");
+efifb_attr_decl(height, "%u");
+efifb_attr_decl(width, "%u");
+efifb_attr_decl(depth, "%u");
+
+static struct attribute *efifb_attrs[] = {
+ &dev_attr_base.attr,
+ &dev_attr_linelength.attr,
+ &dev_attr_width.attr,
+ &dev_attr_height.attr,
+ &dev_attr_depth.attr,
+ NULL
+};
+ATTRIBUTE_GROUPS(efifb);
+
+static bool pci_dev_disabled; /* FB base matches BAR of a disabled device */
+
+static struct pci_dev *efifb_pci_dev; /* dev with BAR covering the efifb */
+static struct resource *bar_resource;
+static u64 bar_offset;
+
+static int efifb_probe(struct platform_device *dev)
+{
+ struct fb_info *info;
+ int err;
+ unsigned int size_vmode;
+ unsigned int size_remap;
+ unsigned int size_total;
+ char *option = NULL;
+
+ if (screen_info.orig_video_isVGA != VIDEO_TYPE_EFI || pci_dev_disabled)
+ return -ENODEV;
+
+ if (fb_get_options("efifb", &option))
+ return -ENODEV;
+ efifb_setup(option);
+
+ /* We don't get linelength from UGA Draw Protocol, only from
+ * EFI Graphics Protocol. So if it's not in DMI, and it's not
+ * passed in from the user, we really can't use the framebuffer.
+ */
+ if (!screen_info.lfb_linelength)
+ return -ENODEV;
+
+ if (!screen_info.lfb_depth)
+ screen_info.lfb_depth = 32;
+ if (!screen_info.pages)
+ screen_info.pages = 1;
+ if (!fb_base_is_valid()) {
+ printk(KERN_DEBUG "efifb: invalid framebuffer address\n");
+ return -ENODEV;
+ }
+ printk(KERN_INFO "efifb: probing for efifb\n");
+
+ /* just assume they're all unset if any are */
+ if (!screen_info.blue_size) {
+ screen_info.blue_size = 8;
+ screen_info.blue_pos = 0;
+ screen_info.green_size = 8;
+ screen_info.green_pos = 8;
+ screen_info.red_size = 8;
+ screen_info.red_pos = 16;
+ screen_info.rsvd_size = 8;
+ screen_info.rsvd_pos = 24;
+ }
+
+ efifb_fix.smem_start = screen_info.lfb_base;
+
+ if (screen_info.capabilities & VIDEO_CAPABILITY_64BIT_BASE) {
+ u64 ext_lfb_base;
+
+ ext_lfb_base = (u64)(unsigned long)screen_info.ext_lfb_base << 32;
+ efifb_fix.smem_start |= ext_lfb_base;
+ }
+
+ if (bar_resource &&
+ bar_resource->start + bar_offset != efifb_fix.smem_start) {
+ dev_info(&efifb_pci_dev->dev,
+ "BAR has moved, updating efifb address\n");
+ efifb_fix.smem_start = bar_resource->start + bar_offset;
+ }
+
+ efifb_defined.bits_per_pixel = screen_info.lfb_depth;
+ efifb_defined.xres = screen_info.lfb_width;
+ efifb_defined.yres = screen_info.lfb_height;
+ efifb_fix.line_length = screen_info.lfb_linelength;
+
+ /* size_vmode -- that is the amount of memory needed for the
+ * used video mode, i.e. the minimum amount of
+ * memory we need. */
+ size_vmode = efifb_defined.yres * efifb_fix.line_length;
+
+ /* size_total -- all video memory we have. Used for
+ * entries, ressource allocation and bounds
+ * checking. */
+ size_total = screen_info.lfb_size;
+ if (size_total < size_vmode)
+ size_total = size_vmode;
+
+ /* size_remap -- the amount of video memory we are going to
+ * use for efifb. With modern cards it is no
+ * option to simply use size_total as that
+ * wastes plenty of kernel address space. */
+ size_remap = size_vmode * 2;
+ if (size_remap > size_total)
+ size_remap = size_total;
+ if (size_remap % PAGE_SIZE)
+ size_remap += PAGE_SIZE - (size_remap % PAGE_SIZE);
+ efifb_fix.smem_len = size_remap;
+
+ if (request_mem_region(efifb_fix.smem_start, size_remap, "efifb")) {
+ request_mem_succeeded = true;
+ } else {
+ /* We cannot make this fatal. Sometimes this comes from magic
+ spaces our resource handlers simply don't know about */
+ pr_warn("efifb: cannot reserve video memory at 0x%lx\n",
+ efifb_fix.smem_start);
+ }
+
+ info = framebuffer_alloc(sizeof(u32) * 16, &dev->dev);
+ if (!info) {
+ pr_err("efifb: cannot allocate framebuffer\n");
+ err = -ENOMEM;
+ goto err_release_mem;
+ }
+ platform_set_drvdata(dev, info);
+ info->pseudo_palette = info->par;
+ info->par = NULL;
+
+ info->apertures = alloc_apertures(1);
+ if (!info->apertures) {
+ err = -ENOMEM;
+ goto err_release_fb;
+ }
+ info->apertures->ranges[0].base = efifb_fix.smem_start;
+ info->apertures->ranges[0].size = size_remap;
+
+ if (nowc)
+ info->screen_base = ioremap(efifb_fix.smem_start, efifb_fix.smem_len);
+ else
+ info->screen_base = ioremap_wc(efifb_fix.smem_start, efifb_fix.smem_len);
+ if (!info->screen_base) {
+ pr_err("efifb: abort, cannot ioremap video memory 0x%x @ 0x%lx\n",
+ efifb_fix.smem_len, efifb_fix.smem_start);
+ err = -EIO;
+ goto err_release_fb;
+ }
+
+ pr_info("efifb: framebuffer at 0x%lx, using %dk, total %dk\n",
+ efifb_fix.smem_start, size_remap/1024, size_total/1024);
+ pr_info("efifb: mode is %dx%dx%d, linelength=%d, pages=%d\n",
+ efifb_defined.xres, efifb_defined.yres,
+ efifb_defined.bits_per_pixel, efifb_fix.line_length,
+ screen_info.pages);
+
+ efifb_defined.xres_virtual = efifb_defined.xres;
+ efifb_defined.yres_virtual = efifb_fix.smem_len /
+ efifb_fix.line_length;
+ pr_info("efifb: scrolling: redraw\n");
+ efifb_defined.yres_virtual = efifb_defined.yres;
+
+ /* some dummy values for timing to make fbset happy */
+ efifb_defined.pixclock = 10000000 / efifb_defined.xres *
+ 1000 / efifb_defined.yres;
+ efifb_defined.left_margin = (efifb_defined.xres / 8) & 0xf8;
+ efifb_defined.hsync_len = (efifb_defined.xres / 8) & 0xf8;
+
+ efifb_defined.red.offset = screen_info.red_pos;
+ efifb_defined.red.length = screen_info.red_size;
+ efifb_defined.green.offset = screen_info.green_pos;
+ efifb_defined.green.length = screen_info.green_size;
+ efifb_defined.blue.offset = screen_info.blue_pos;
+ efifb_defined.blue.length = screen_info.blue_size;
+ efifb_defined.transp.offset = screen_info.rsvd_pos;
+ efifb_defined.transp.length = screen_info.rsvd_size;
+
+ pr_info("efifb: %s: "
+ "size=%d:%d:%d:%d, shift=%d:%d:%d:%d\n",
+ "Truecolor",
+ screen_info.rsvd_size,
+ screen_info.red_size,
+ screen_info.green_size,
+ screen_info.blue_size,
+ screen_info.rsvd_pos,
+ screen_info.red_pos,
+ screen_info.green_pos,
+ screen_info.blue_pos);
+
+ efifb_fix.ypanstep = 0;
+ efifb_fix.ywrapstep = 0;
+
+ info->fbops = &efifb_ops;
+ info->var = efifb_defined;
+ info->fix = efifb_fix;
+ info->flags = FBINFO_FLAG_DEFAULT | FBINFO_MISC_FIRMWARE;
+
+ err = sysfs_create_groups(&dev->dev.kobj, efifb_groups);
+ if (err) {
+ pr_err("efifb: cannot add sysfs attrs\n");
+ goto err_unmap;
+ }
+ err = fb_alloc_cmap(&info->cmap, 256, 0);
+ if (err < 0) {
+ pr_err("efifb: cannot allocate colormap\n");
+ goto err_groups;
+ }
+ err = register_framebuffer(info);
+ if (err < 0) {
+ pr_err("efifb: cannot register framebuffer\n");
+ goto err_fb_dealoc;
+ }
+ fb_info(info, "%s frame buffer device\n", info->fix.id);
+ return 0;
+
+err_fb_dealoc:
+ fb_dealloc_cmap(&info->cmap);
+err_groups:
+ sysfs_remove_groups(&dev->dev.kobj, efifb_groups);
+err_unmap:
+ iounmap(info->screen_base);
+err_release_fb:
+ framebuffer_release(info);
+err_release_mem:
+ if (request_mem_succeeded)
+ release_mem_region(efifb_fix.smem_start, size_total);
+ return err;
+}
+
+static int efifb_remove(struct platform_device *pdev)
+{
+ struct fb_info *info = platform_get_drvdata(pdev);
+
+ unregister_framebuffer(info);
+ sysfs_remove_groups(&pdev->dev.kobj, efifb_groups);
+ framebuffer_release(info);
+
+ return 0;
+}
+
+static struct platform_driver efifb_driver = {
+ .driver = {
+ .name = "efi-framebuffer",
+ },
+ .probe = efifb_probe,
+ .remove = efifb_remove,
+};
+
+builtin_platform_driver(efifb_driver);
+
+#if defined(CONFIG_PCI)
+
+static void record_efifb_bar_resource(struct pci_dev *dev, int idx, u64 offset)
+{
+ u16 word;
+
+ efifb_pci_dev = dev;
+
+ pci_read_config_word(dev, PCI_COMMAND, &word);
+ if (!(word & PCI_COMMAND_MEMORY)) {
+ pci_dev_disabled = true;
+ dev_err(&dev->dev,
+ "BAR %d: assigned to efifb but device is disabled!\n",
+ idx);
+ return;
+ }
+
+ bar_resource = &dev->resource[idx];
+ bar_offset = offset;
+
+ dev_info(&dev->dev, "BAR %d: assigned to efifb\n", idx);
+}
+
+static void efifb_fixup_resources(struct pci_dev *dev)
+{
+ u64 base = screen_info.lfb_base;
+ u64 size = screen_info.lfb_size;
+ int i;
+
+ if (efifb_pci_dev || screen_info.orig_video_isVGA != VIDEO_TYPE_EFI)
+ return;
+
+ if (screen_info.capabilities & VIDEO_CAPABILITY_64BIT_BASE)
+ base |= (u64)screen_info.ext_lfb_base << 32;
+
+ if (!base)
+ return;
+
+ for (i = 0; i <= PCI_STD_RESOURCE_END; i++) {
+ struct resource *res = &dev->resource[i];
+
+ if (!(res->flags & IORESOURCE_MEM))
+ continue;
+
+ if (res->start <= base && res->end >= base + size - 1) {
+ record_efifb_bar_resource(dev, i, base - res->start);
+ break;
+ }
+ }
+}
+DECLARE_PCI_FIXUP_CLASS_HEADER(PCI_ANY_ID, PCI_ANY_ID, PCI_BASE_CLASS_DISPLAY,
+ 16, efifb_fixup_resources);
+
+#endif