GK SDK 源码库: XMIPCLinuxV100R005C00SPC030 (kernel/tools/open_source excluded)

source/bootloader/u-boot-2020.01/arch/x86/lib/fsp1/Makefile

@@ -0,0 +1,9 @@
+# SPDX-License-Identifier: GPL-2.0+
+#
+# Copyright (C) 2015 Google, Inc
+
+obj-y += fsp_car.o
+obj-y += fsp_common.o
+obj-y += fsp_dram.o
+obj-$(CONFIG_VIDEO_FSP) += fsp_graphics.o
+obj-y += fsp_support.o

source/bootloader/u-boot-2020.01/arch/x86/lib/fsp1/fsp_car.S

@@ -0,0 +1,111 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright (C) 2014, Bin Meng <bmeng.cn@gmail.com>
+ */
+
+#include <config.h>
+#include <asm/post.h>
+
+.globl car_init
+car_init:
+	/*
+	 * Note: ebp holds the BIST value (built-in self test) so far, but ebp
+	 * will be destroyed through the FSP call, thus we have to test the
+	 * BIST value here before we call into FSP.
+	 */
+	test	%ebp, %ebp
+	jz	car_init_start
+	post_code(POST_BIST_FAILURE)
+	jmp	die
+
+car_init_start:
+	post_code(POST_CAR_START)
+	lea	fsp_find_header_romstack, %esp
+	jmp	fsp_find_header
+
+fsp_find_header_ret:
+	/* EAX points to FSP_INFO_HEADER */
+	mov	%eax, %ebp
+
+	/* sanity test */
+	cmp	$CONFIG_FSP_ADDR, %eax
+	jb	die
+
+	/* calculate TempRamInitEntry address */
+	mov	0x30(%ebp), %eax
+	add	0x1c(%ebp), %eax
+
+	/* call FSP TempRamInitEntry to setup temporary stack */
+	lea	temp_ram_init_romstack, %esp
+	jmp	*%eax
+
+temp_ram_init_ret:
+	addl	$4, %esp
+	cmp	$0, %eax
+	jnz	car_init_fail
+
+	post_code(POST_CAR_CPU_CACHE)
+
+	/*
+	 * The FSP TempRamInit initializes the ecx and edx registers to
+	 * point to a temporary but writable memory range (Cache-As-RAM).
+	 * ecx: the start of this temporary memory range,
+	 * edx: the end of this range.
+	 */
+
+	/* stack grows down from top of CAR */
+	movl	%edx, %esp
+	subl	$4, %esp
+
+	xor	%esi, %esi
+	jmp	car_init_done
+
+.global fsp_init_done
+fsp_init_done:
+	/*
+	 * We come here from fsp_continue() with eax pointing to the HOB list.
+	 * Save eax to esi temporarily.
+	 */
+	movl	%eax, %esi
+
+car_init_done:
+	/*
+	 * Re-initialize the ebp (BIST) to zero, as we already reach here
+	 * which means we passed BIST testing before.
+	 */
+	xorl	%ebp, %ebp
+	jmp	car_init_ret
+
+car_init_fail:
+	post_code(POST_CAR_FAILURE)
+
+die:
+	hlt
+	jmp	die
+	hlt
+
+	/*
+	 * The function call before CAR initialization is tricky. It cannot
+	 * be called using the 'call' instruction but only the 'jmp' with
+	 * the help of a handcrafted stack in the ROM. The stack needs to
+	 * contain the function return address as well as the parameters.
+	 */
+	.balign	4
+fsp_find_header_romstack:
+	.long	fsp_find_header_ret
+
+	.balign	4
+temp_ram_init_romstack:
+	.long	temp_ram_init_ret
+	.long	temp_ram_init_params
+temp_ram_init_params:
+_dt_ucode_base_size:
+	/* These next two fields are filled in by binman */
+.globl ucode_base
+ucode_base:	/* Declared in microcode.h */
+	.long	0			/* microcode base */
+.globl ucode_size
+ucode_size:	/* Declared in microcode.h */
+	.long	0			/* microcode size */
+	.long	CONFIG_SYS_MONITOR_BASE	/* code region base */
+	.long	CONFIG_SYS_MONITOR_LEN	/* code region size */

source/bootloader/u-boot-2020.01/arch/x86/lib/fsp1/fsp_common.c

@@ -0,0 +1,77 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2014, Bin Meng <bmeng.cn@gmail.com>
+ */
+
+#include <common.h>
+#include <acpi_s3.h>
+#include <dm.h>
+#include <errno.h>
+#include <rtc.h>
+#include <asm/cmos_layout.h>
+#include <asm/early_cmos.h>
+#include <asm/io.h>
+#include <asm/mrccache.h>
+#include <asm/post.h>
+#include <asm/processor.h>
+#include <asm/fsp1/fsp_support.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+int arch_fsp_init(void)
+{
+	void *nvs;
+	int stack = CONFIG_FSP_TEMP_RAM_ADDR;
+	int boot_mode = BOOT_FULL_CONFIG;
+#ifdef CONFIG_HAVE_ACPI_RESUME
+	int prev_sleep_state = chipset_prev_sleep_state();
+	gd->arch.prev_sleep_state = prev_sleep_state;
+#endif
+
+	if (!gd->arch.hob_list) {
+		if (IS_ENABLED(CONFIG_ENABLE_MRC_CACHE))
+			nvs = fsp_prepare_mrc_cache();
+		else
+			nvs = NULL;
+
+#ifdef CONFIG_HAVE_ACPI_RESUME
+		if (prev_sleep_state == ACPI_S3) {
+			if (nvs == NULL) {
+				/* If waking from S3 and no cache then */
+				debug("No MRC cache found in S3 resume path\n");
+				post_code(POST_RESUME_FAILURE);
+				/* Clear Sleep Type */
+				chipset_clear_sleep_state();
+				/* Reboot */
+				debug("Rebooting..\n");
+				outb(SYS_RST | RST_CPU, IO_PORT_RESET);
+				/* Should not reach here.. */
+				panic("Reboot System");
+			}
+
+			/*
+			 * DM is not available yet at this point, hence call
+			 * CMOS access library which does not depend on DM.
+			 */
+			stack = cmos_read32(CMOS_FSP_STACK_ADDR);
+			boot_mode = BOOT_ON_S3_RESUME;
+		}
+#endif
+		/*
+		 * The first time we enter here, call fsp_init().
+		 * Note the execution does not return to this function,
+		 * instead it jumps to fsp_continue().
+		 */
+		fsp_init(stack, boot_mode, nvs);
+	} else {
+		/*
+		 * The second time we enter here, adjust the size of malloc()
+		 * pool before relocation. Given gd->malloc_base was adjusted
+		 * after the call to board_init_f_init_reserve() in arch/x86/
+		 * cpu/start.S, we should fix up gd->malloc_limit here.
+		 */
+		gd->malloc_limit += CONFIG_FSP_SYS_MALLOC_F_LEN;
+	}
+
+	return 0;
+}

source/bootloader/u-boot-2020.01/arch/x86/lib/fsp1/fsp_dram.c

@@ -0,0 +1,36 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2014, Bin Meng <bmeng.cn@gmail.com>
+ */
+
+#include <common.h>
+#include <asm/fsp/fsp_support.h>
+
+int dram_init(void)
+{
+	int ret;
+
+	/* The FSP has already set up DRAM, so grab the info we need */
+	ret = fsp_scan_for_ram_size();
+	if (ret)
+		return ret;
+
+	if (IS_ENABLED(CONFIG_ENABLE_MRC_CACHE))
+		gd->arch.mrc_output = fsp_get_nvs_data(gd->arch.hob_list,
+					       &gd->arch.mrc_output_len);
+
+	return 0;
+}
+
+/*
+ * This function looks for the highest region of memory lower than 4GB which
+ * has enough space for U-Boot where U-Boot is aligned on a page boundary.
+ * It overrides the default implementation found elsewhere which simply
+ * picks the end of ram, wherever that may be. The location of the stack,
+ * the relocation address, and how far U-Boot is moved by relocation are
+ * set in the global data structure.
+ */
+ulong board_get_usable_ram_top(ulong total_size)
+{
+	return fsp_get_usable_lowmem_top(gd->arch.hob_list);
+}

source/bootloader/u-boot-2020.01/arch/x86/lib/fsp1/fsp_graphics.c

@@ -0,0 +1,127 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2017, Bin Meng <bmeng.cn@gmail.com>
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <vbe.h>
+#include <video.h>
+#include <asm/fsp1/fsp_support.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+struct pixel {
+	u8 pos;
+	u8 size;
+};
+
+static const struct fsp_framebuffer {
+	struct pixel red;
+	struct pixel green;
+	struct pixel blue;
+	struct pixel rsvd;
+} fsp_framebuffer_format_map[] = {
+	[pixel_rgbx_8bpc] = { {0, 8}, {8, 8}, {16, 8}, {24, 8} },
+	[pixel_bgrx_8bpc] = { {16, 8}, {8, 8}, {0, 8}, {24, 8} },
+};
+
+static int save_vesa_mode(struct vesa_mode_info *vesa)
+{
+	const struct hob_graphics_info *ginfo;
+	const struct fsp_framebuffer *fbinfo;
+
+	ginfo = fsp_get_graphics_info(gd->arch.hob_list, NULL);
+
+	/*
+	 * If there is no graphics info structure, bail out and keep
+	 * running on the serial console.
+	 *
+	 * Note: on some platforms (eg: Braswell), the FSP will not produce
+	 * the graphics info HOB unless you plug some cables to the display
+	 * interface (eg: HDMI) on the board.
+	 */
+	if (!ginfo) {
+		debug("FSP graphics hand-off block not found\n");
+		return -ENXIO;
+	}
+
+	vesa->x_resolution = ginfo->width;
+	vesa->y_resolution = ginfo->height;
+	vesa->bits_per_pixel = 32;
+	vesa->bytes_per_scanline = ginfo->pixels_per_scanline * 4;
+	vesa->phys_base_ptr = ginfo->fb_base;
+
+	if (ginfo->pixel_format >= pixel_bitmask) {
+		debug("FSP set unknown framebuffer format: %d\n",
+		      ginfo->pixel_format);
+		return -EINVAL;
+	}
+	fbinfo = &fsp_framebuffer_format_map[ginfo->pixel_format];
+	vesa->red_mask_size = fbinfo->red.size;
+	vesa->red_mask_pos = fbinfo->red.pos;
+	vesa->green_mask_size = fbinfo->green.size;
+	vesa->green_mask_pos = fbinfo->green.pos;
+	vesa->blue_mask_size = fbinfo->blue.size;
+	vesa->blue_mask_pos = fbinfo->blue.pos;
+	vesa->reserved_mask_size = fbinfo->rsvd.size;
+	vesa->reserved_mask_pos = fbinfo->rsvd.pos;
+
+	return 0;
+}
+
+static int fsp_video_probe(struct udevice *dev)
+{
+	struct video_uc_platdata *plat = dev_get_uclass_platdata(dev);
+	struct video_priv *uc_priv = dev_get_uclass_priv(dev);
+	struct vesa_mode_info *vesa = &mode_info.vesa;
+	int ret;
+
+	printf("Video: ");
+
+	/* Initialize vesa_mode_info structure */
+	ret = save_vesa_mode(vesa);
+	if (ret)
+		goto err;
+
+	/*
+	 * The framebuffer base address in the FSP graphics info HOB reflects
+	 * the value assigned by the FSP. After PCI enumeration the framebuffer
+	 * base address may be relocated. Let's get the updated one from device.
+	 *
+	 * For IGD, it seems to be always on BAR2.
+	 */
+	vesa->phys_base_ptr = dm_pci_read_bar32(dev, 2);
+
+	ret = vbe_setup_video_priv(vesa, uc_priv, plat);
+	if (ret)
+		goto err;
+
+	printf("%dx%dx%d\n", uc_priv->xsize, uc_priv->ysize,
+	       vesa->bits_per_pixel);
+
+	return 0;
+
+err:
+	printf("No video mode configured in FSP!\n");
+	return ret;
+}
+
+static const struct udevice_id fsp_video_ids[] = {
+	{ .compatible = "fsp-fb" },
+	{ }
+};
+
+U_BOOT_DRIVER(fsp_video) = {
+	.name	= "fsp_video",
+	.id	= UCLASS_VIDEO,
+	.of_match = fsp_video_ids,
+	.probe	= fsp_video_probe,
+};
+
+static struct pci_device_id fsp_video_supported[] = {
+	{ PCI_DEVICE_CLASS(PCI_CLASS_DISPLAY_VGA << 8, 0xffff00) },
+	{ },
+};
+
+U_BOOT_PCI_DEVICE(fsp_video, fsp_video_supported);

source/bootloader/u-boot-2020.01/arch/x86/lib/fsp1/fsp_support.c

@@ -0,0 +1,199 @@
+// SPDX-License-Identifier: Intel
+/*
+ * Copyright (C) 2013, Intel Corporation
+ * Copyright (C) 2014, Bin Meng <bmeng.cn@gmail.com>
+ */
+
+#include <common.h>
+#include <asm/fsp1/fsp_support.h>
+#include <asm/post.h>
+
+struct fsp_header *__attribute__((optimize("O0"))) fsp_find_header(void)
+{
+	/*
+	 * This function may be called before the a stack is established,
+	 * so special care must be taken. First, it cannot declare any local
+	 * variable using stack. Only register variable can be used here.
+	 * Secondly, some compiler version will add prolog or epilog code
+	 * for the C function. If so the function call may not work before
+	 * stack is ready.
+	 *
+	 * GCC 4.8.1 has been verified to be working for the following codes.
+	 */
+	volatile register u8 *fsp asm("eax");
+
+	/* Initalize the FSP base */
+	fsp = (u8 *)CONFIG_FSP_ADDR;
+
+	/* Check the FV signature, _FVH */
+	if (((struct fv_header *)fsp)->sign == EFI_FVH_SIGNATURE) {
+		/* Go to the end of the FV header and align the address */
+		fsp += ((struct fv_header *)fsp)->ext_hdr_off;
+		fsp += ((struct fv_ext_header *)fsp)->ext_hdr_size;
+		fsp  = (u8 *)(((u32)fsp + 7) & 0xFFFFFFF8);
+	} else {
+		fsp  = 0;
+	}
+
+	/* Check the FFS GUID */
+	if (fsp &&
+	    ((struct ffs_file_header *)fsp)->name.b[0] == FSP_GUID_BYTE0 &&
+	    ((struct ffs_file_header *)fsp)->name.b[1] == FSP_GUID_BYTE1 &&
+	    ((struct ffs_file_header *)fsp)->name.b[2] == FSP_GUID_BYTE2 &&
+	    ((struct ffs_file_header *)fsp)->name.b[3] == FSP_GUID_BYTE3 &&
+	    ((struct ffs_file_header *)fsp)->name.b[4] == FSP_GUID_BYTE4 &&
+	    ((struct ffs_file_header *)fsp)->name.b[5] == FSP_GUID_BYTE5 &&
+	    ((struct ffs_file_header *)fsp)->name.b[6] == FSP_GUID_BYTE6 &&
+	    ((struct ffs_file_header *)fsp)->name.b[7] == FSP_GUID_BYTE7 &&
+	    ((struct ffs_file_header *)fsp)->name.b[8] == FSP_GUID_BYTE8 &&
+	    ((struct ffs_file_header *)fsp)->name.b[9] == FSP_GUID_BYTE9 &&
+	    ((struct ffs_file_header *)fsp)->name.b[10] == FSP_GUID_BYTE10 &&
+	    ((struct ffs_file_header *)fsp)->name.b[11] == FSP_GUID_BYTE11 &&
+	    ((struct ffs_file_header *)fsp)->name.b[12] == FSP_GUID_BYTE12 &&
+	    ((struct ffs_file_header *)fsp)->name.b[13] == FSP_GUID_BYTE13 &&
+	    ((struct ffs_file_header *)fsp)->name.b[14] == FSP_GUID_BYTE14 &&
+	    ((struct ffs_file_header *)fsp)->name.b[15] == FSP_GUID_BYTE15) {
+		/* Add the FFS header size to find the raw section header */
+		fsp += sizeof(struct ffs_file_header);
+	} else {
+		fsp = 0;
+	}
+
+	if (fsp &&
+	    ((struct raw_section *)fsp)->type == EFI_SECTION_RAW) {
+		/* Add the raw section header size to find the FSP header */
+		fsp += sizeof(struct raw_section);
+	} else {
+		fsp = 0;
+	}
+
+	return (struct fsp_header *)fsp;
+}
+
+void fsp_continue(u32 status, void *hob_list)
+{
+	post_code(POST_MRC);
+
+	assert(status == 0);
+
+	/* The boot loader main function entry */
+	fsp_init_done(hob_list);
+}
+
+void fsp_init(u32 stack_top, u32 boot_mode, void *nvs_buf)
+{
+	struct fsp_config_data config_data;
+	fsp_init_f init;
+	struct fsp_init_params params;
+	struct fspinit_rtbuf rt_buf;
+	struct fsp_header *fsp_hdr;
+	struct fsp_init_params *params_ptr;
+#ifdef CONFIG_FSP_USE_UPD
+	struct vpd_region *fsp_vpd;
+	struct upd_region *fsp_upd;
+#endif
+
+	fsp_hdr = fsp_find_header();
+	if (fsp_hdr == NULL) {
+		/* No valid FSP info header was found */
+		panic("Invalid FSP header");
+	}
+
+	config_data.common.fsp_hdr = fsp_hdr;
+	config_data.common.stack_top = stack_top;
+	config_data.common.boot_mode = boot_mode;
+
+#ifdef CONFIG_FSP_USE_UPD
+	/* Get VPD region start */
+	fsp_vpd = (struct vpd_region *)(fsp_hdr->img_base +
+			fsp_hdr->cfg_region_off);
+
+	/* Verify the VPD data region is valid */
+	assert(fsp_vpd->sign == VPD_IMAGE_ID);
+
+	fsp_upd = &config_data.fsp_upd;
+
+	/* Copy default data from Flash */
+	memcpy(fsp_upd, (void *)(fsp_hdr->img_base + fsp_vpd->upd_offset),
+	       sizeof(struct upd_region));
+
+	/* Verify the UPD data region is valid */
+	assert(fsp_upd->terminator == UPD_TERMINATOR);
+#endif
+
+	memset(&rt_buf, 0, sizeof(struct fspinit_rtbuf));
+
+	/* Override any configuration if required */
+	fsp_update_configs(&config_data, &rt_buf);
+
+	memset(&params, 0, sizeof(struct fsp_init_params));
+	params.nvs_buf = nvs_buf;
+	params.rt_buf = (struct fspinit_rtbuf *)&rt_buf;
+	params.continuation = (fsp_continuation_f)fsp_asm_continuation;
+
+	init = (fsp_init_f)(fsp_hdr->img_base + fsp_hdr->fsp_init);
+	params_ptr = &params;
+
+	post_code(POST_PRE_MRC);
+
+	/* Load GDT for FSP */
+	setup_fsp_gdt();
+
+	/*
+	 * Use ASM code to ensure the register value in EAX & EDX
+	 * will be passed into fsp_continue
+	 */
+	asm volatile (
+		"pushl	%0;"
+		"call	*%%eax;"
+		".global fsp_asm_continuation;"
+		"fsp_asm_continuation:;"
+		"movl	4(%%esp), %%eax;"	/* status */
+		"movl	8(%%esp), %%edx;"	/* hob_list */
+		"jmp	fsp_continue;"
+		: : "m"(params_ptr), "a"(init)
+	);
+
+	/*
+	 * Should never get here.
+	 * Control will continue from fsp_continue.
+	 * This line below is to prevent the compiler from optimizing
+	 * structure intialization.
+	 *
+	 * DO NOT REMOVE!
+	 */
+	init(&params);
+}
+
+u32 fsp_notify(struct fsp_header *fsp_hdr, u32 phase)
+{
+	fsp_notify_f notify;
+	struct fsp_notify_params params;
+	struct fsp_notify_params *params_ptr;
+	u32 status;
+
+	if (!fsp_hdr)
+		fsp_hdr = (struct fsp_header *)fsp_find_header();
+
+	if (fsp_hdr == NULL) {
+		/* No valid FSP info header */
+		panic("Invalid FSP header");
+	}
+
+	notify = (fsp_notify_f)(fsp_hdr->img_base + fsp_hdr->fsp_notify);
+	params.phase = phase;
+	params_ptr = &params;
+
+	/*
+	 * Use ASM code to ensure correct parameter is on the stack for
+	 * FspNotify as U-Boot is using different ABI from FSP
+	 */
+	asm volatile (
+		"pushl	%1;"		/* push notify phase */
+		"call	*%%eax;"	/* call FspNotify */
+		"addl	$4, %%esp;"	/* clean up the stack */
+		: "=a"(status) : "m"(params_ptr), "a"(notify), "m"(*params_ptr)
+	);
+
+	return status;
+}