Add submodule dependency filesHEADmaster

Change-Id: Iaf8d18082d3991dec7c0ebbea540f092188eb4ec

1 files changed, 476 insertions, 0 deletions

diff --git a/roms/u-boot/arch/arm/lib/bootm.c b/roms/u-boot/arch/arm/lib/bootm.c
new file mode 100644
index 000000000..f60ee3a7e
--- /dev/null
+++ b/roms/u-boot/arch/arm/lib/bootm.c
@@ -0,0 +1,476 @@
+// SPDX-License-Identifier: GPL-2.0+
+/* Copyright (C) 2011
+ * Corscience GmbH & Co. KG - Simon Schwarz <schwarz@corscience.de>
+ *  - Added prep subcommand support
+ *  - Reorganized source - modeled after powerpc version
+ *
+ * (C) Copyright 2002
+ * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
+ * Marius Groeger <mgroeger@sysgo.de>
+ *
+ * Copyright (C) 2001  Erik Mouw (J.A.K.Mouw@its.tudelft.nl)
+ */
+
+#include <common.h>
+#include <bootstage.h>
+#include <command.h>
+#include <cpu_func.h>
+#include <dm.h>
+#include <lmb.h>
+#include <log.h>
+#include <asm/global_data.h>
+#include <dm/root.h>
+#include <env.h>
+#include <image.h>
+#include <u-boot/zlib.h>
+#include <asm/byteorder.h>
+#include <linux/libfdt.h>
+#include <mapmem.h>
+#include <fdt_support.h>
+#include <asm/bootm.h>
+#include <asm/secure.h>
+#include <linux/compiler.h>
+#include <bootm.h>
+#include <vxworks.h>
+#include <asm/cache.h>
+
+#ifdef CONFIG_ARMV7_NONSEC
+#include <asm/armv7.h>
+#endif
+#include <asm/setup.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+static struct tag *params;
+
+static ulong get_sp(void)
+{
+	ulong ret;
+
+	asm("mov %0, sp" : "=r"(ret) : );
+	return ret;
+}
+
+void arch_lmb_reserve(struct lmb *lmb)
+{
+	ulong sp, bank_end;
+	int bank;
+
+	/*
+	 * Booting a (Linux) kernel image
+	 *
+	 * Allocate space for command line and board info - the
+	 * address should be as high as possible within the reach of
+	 * the kernel (see CONFIG_SYS_BOOTMAPSZ settings), but in unused
+	 * memory, which means far enough below the current stack
+	 * pointer.
+	 */
+	sp = get_sp();
+	debug("## Current stack ends at 0x%08lx ", sp);
+
+	/* adjust sp by 4K to be safe */
+	sp -= 4096;
+	for (bank = 0; bank < CONFIG_NR_DRAM_BANKS; bank++) {
+		if (!gd->bd->bi_dram[bank].size ||
+		    sp < gd->bd->bi_dram[bank].start)
+			continue;
+		/* Watch out for RAM at end of address space! */
+		bank_end = gd->bd->bi_dram[bank].start +
+			gd->bd->bi_dram[bank].size - 1;
+		if (sp > bank_end)
+			continue;
+		if (bank_end > gd->ram_top)
+			bank_end = gd->ram_top - 1;
+
+		lmb_reserve(lmb, sp, bank_end - sp + 1);
+		break;
+	}
+}
+
+__weak void board_quiesce_devices(void)
+{
+}
+
+/**
+ * announce_and_cleanup() - Print message and prepare for kernel boot
+ *
+ * @fake: non-zero to do everything except actually boot
+ */
+static void announce_and_cleanup(int fake)
+{
+	bootstage_mark_name(BOOTSTAGE_ID_BOOTM_HANDOFF, "start_kernel");
+#ifdef CONFIG_BOOTSTAGE_FDT
+	bootstage_fdt_add_report();
+#endif
+#ifdef CONFIG_BOOTSTAGE_REPORT
+	bootstage_report();
+#endif
+
+#ifdef CONFIG_USB_DEVICE
+	udc_disconnect();
+#endif
+
+	board_quiesce_devices();
+
+	printf("\nStarting kernel ...%s\n\n", fake ?
+		"(fake run for tracing)" : "");
+	/*
+	 * Call remove function of all devices with a removal flag set.
+	 * This may be useful for last-stage operations, like cancelling
+	 * of DMA operation or releasing device internal buffers.
+	 */
+	dm_remove_devices_flags(DM_REMOVE_ACTIVE_ALL | DM_REMOVE_NON_VITAL);
+
+	/* Remove all active vital devices next */
+	dm_remove_devices_flags(DM_REMOVE_ACTIVE_ALL);
+
+	cleanup_before_linux();
+}
+
+static void setup_start_tag (struct bd_info *bd)
+{
+	params = (struct tag *)bd->bi_boot_params;
+
+	params->hdr.tag = ATAG_CORE;
+	params->hdr.size = tag_size (tag_core);
+
+	params->u.core.flags = 0;
+	params->u.core.pagesize = 0;
+	params->u.core.rootdev = 0;
+
+	params = tag_next (params);
+}
+
+static void setup_memory_tags(struct bd_info *bd)
+{
+	int i;
+
+	for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
+		params->hdr.tag = ATAG_MEM;
+		params->hdr.size = tag_size (tag_mem32);
+
+		params->u.mem.start = bd->bi_dram[i].start;
+		params->u.mem.size = bd->bi_dram[i].size;
+
+		params = tag_next (params);
+	}
+}
+
+static void setup_commandline_tag(struct bd_info *bd, char *commandline)
+{
+	char *p;
+
+	if (!commandline)
+		return;
+
+	/* eat leading white space */
+	for (p = commandline; *p == ' '; p++);
+
+	/* skip non-existent command lines so the kernel will still
+	 * use its default command line.
+	 */
+	if (*p == '\0')
+		return;
+
+	params->hdr.tag = ATAG_CMDLINE;
+	params->hdr.size =
+		(sizeof (struct tag_header) + strlen (p) + 1 + 4) >> 2;
+
+	strcpy (params->u.cmdline.cmdline, p);
+
+	params = tag_next (params);
+}
+
+static void setup_initrd_tag(struct bd_info *bd, ulong initrd_start,
+			     ulong initrd_end)
+{
+	/* an ATAG_INITRD node tells the kernel where the compressed
+	 * ramdisk can be found. ATAG_RDIMG is a better name, actually.
+	 */
+	params->hdr.tag = ATAG_INITRD2;
+	params->hdr.size = tag_size (tag_initrd);
+
+	params->u.initrd.start = initrd_start;
+	params->u.initrd.size = initrd_end - initrd_start;
+
+	params = tag_next (params);
+}
+
+static void setup_serial_tag(struct tag **tmp)
+{
+	struct tag *params = *tmp;
+	struct tag_serialnr serialnr;
+
+	get_board_serial(&serialnr);
+	params->hdr.tag = ATAG_SERIAL;
+	params->hdr.size = tag_size (tag_serialnr);
+	params->u.serialnr.low = serialnr.low;
+	params->u.serialnr.high= serialnr.high;
+	params = tag_next (params);
+	*tmp = params;
+}
+
+static void setup_revision_tag(struct tag **in_params)
+{
+	u32 rev = 0;
+
+	rev = get_board_rev();
+	params->hdr.tag = ATAG_REVISION;
+	params->hdr.size = tag_size (tag_revision);
+	params->u.revision.rev = rev;
+	params = tag_next (params);
+}
+
+static void setup_end_tag(struct bd_info *bd)
+{
+	params->hdr.tag = ATAG_NONE;
+	params->hdr.size = 0;
+}
+
+__weak void setup_board_tags(struct tag **in_params) {}
+
+#ifdef CONFIG_ARM64
+static void do_nonsec_virt_switch(void)
+{
+	smp_kick_all_cpus();
+	dcache_disable();	/* flush cache before swtiching to EL2 */
+}
+#endif
+
+__weak void board_prep_linux(bootm_headers_t *images) { }
+
+/* Subcommand: PREP */
+static void boot_prep_linux(bootm_headers_t *images)
+{
+	char *commandline = env_get("bootargs");
+
+	if (IMAGE_ENABLE_OF_LIBFDT && images->ft_len) {
+#ifdef CONFIG_OF_LIBFDT
+		debug("using: FDT\n");
+		if (image_setup_linux(images)) {
+			panic("FDT creation failed!");
+		}
+#endif
+	} else if (BOOTM_ENABLE_TAGS) {
+		debug("using: ATAGS\n");
+		setup_start_tag(gd->bd);
+		if (BOOTM_ENABLE_SERIAL_TAG)
+			setup_serial_tag(&params);
+		if (BOOTM_ENABLE_CMDLINE_TAG)
+			setup_commandline_tag(gd->bd, commandline);
+		if (BOOTM_ENABLE_REVISION_TAG)
+			setup_revision_tag(&params);
+		if (BOOTM_ENABLE_MEMORY_TAGS)
+			setup_memory_tags(gd->bd);
+		if (BOOTM_ENABLE_INITRD_TAG) {
+			/*
+			 * In boot_ramdisk_high(), it may relocate ramdisk to
+			 * a specified location. And set images->initrd_start &
+			 * images->initrd_end to relocated ramdisk's start/end
+			 * addresses. So use them instead of images->rd_start &
+			 * images->rd_end when possible.
+			 */
+			if (images->initrd_start && images->initrd_end) {
+				setup_initrd_tag(gd->bd, images->initrd_start,
+						 images->initrd_end);
+			} else if (images->rd_start && images->rd_end) {
+				setup_initrd_tag(gd->bd, images->rd_start,
+						 images->rd_end);
+			}
+		}
+		setup_board_tags(&params);
+		setup_end_tag(gd->bd);
+	} else {
+		panic("FDT and ATAGS support not compiled in\n");
+	}
+
+	board_prep_linux(images);
+}
+
+__weak bool armv7_boot_nonsec_default(void)
+{
+#ifdef CONFIG_ARMV7_BOOT_SEC_DEFAULT
+	return false;
+#else
+	return true;
+#endif
+}
+
+#ifdef CONFIG_ARMV7_NONSEC
+bool armv7_boot_nonsec(void)
+{
+	char *s = env_get("bootm_boot_mode");
+	bool nonsec = armv7_boot_nonsec_default();
+
+	if (s && !strcmp(s, "sec"))
+		nonsec = false;
+
+	if (s && !strcmp(s, "nonsec"))
+		nonsec = true;
+
+	return nonsec;
+}
+#endif
+
+#ifdef CONFIG_ARM64
+__weak void update_os_arch_secondary_cores(uint8_t os_arch)
+{
+}
+
+#ifdef CONFIG_ARMV8_SWITCH_TO_EL1
+static void switch_to_el1(void)
+{
+	if ((IH_ARCH_DEFAULT == IH_ARCH_ARM64) &&
+	    (images.os.arch == IH_ARCH_ARM))
+		armv8_switch_to_el1(0, (u64)gd->bd->bi_arch_number,
+				    (u64)images.ft_addr, 0,
+				    (u64)images.ep,
+				    ES_TO_AARCH32);
+	else
+		armv8_switch_to_el1((u64)images.ft_addr, 0, 0, 0,
+				    images.ep,
+				    ES_TO_AARCH64);
+}
+#endif
+#endif
+
+/* Subcommand: GO */
+static void boot_jump_linux(bootm_headers_t *images, int flag)
+{
+#ifdef CONFIG_ARM64
+	void (*kernel_entry)(void *fdt_addr, void *res0, void *res1,
+			void *res2);
+	int fake = (flag & BOOTM_STATE_OS_FAKE_GO);
+
+	kernel_entry = (void (*)(void *fdt_addr, void *res0, void *res1,
+				void *res2))images->ep;
+
+	debug("## Transferring control to Linux (at address %lx)...\n",
+		(ulong) kernel_entry);
+	bootstage_mark(BOOTSTAGE_ID_RUN_OS);
+
+	announce_and_cleanup(fake);
+
+	if (!fake) {
+#ifdef CONFIG_ARMV8_PSCI
+		armv8_setup_psci();
+#endif
+		do_nonsec_virt_switch();
+
+		update_os_arch_secondary_cores(images->os.arch);
+
+#ifdef CONFIG_ARMV8_SWITCH_TO_EL1
+		armv8_switch_to_el2((u64)images->ft_addr, 0, 0, 0,
+				    (u64)switch_to_el1, ES_TO_AARCH64);
+#else
+		if ((IH_ARCH_DEFAULT == IH_ARCH_ARM64) &&
+		    (images->os.arch == IH_ARCH_ARM))
+			armv8_switch_to_el2(0, (u64)gd->bd->bi_arch_number,
+					    (u64)images->ft_addr, 0,
+					    (u64)images->ep,
+					    ES_TO_AARCH32);
+		else
+			armv8_switch_to_el2((u64)images->ft_addr, 0, 0, 0,
+					    images->ep,
+					    ES_TO_AARCH64);
+#endif
+	}
+#else
+	unsigned long machid = gd->bd->bi_arch_number;
+	char *s;
+	void (*kernel_entry)(int zero, int arch, uint params);
+	unsigned long r2;
+	int fake = (flag & BOOTM_STATE_OS_FAKE_GO);
+
+	kernel_entry = (void (*)(int, int, uint))images->ep;
+#ifdef CONFIG_CPU_V7M
+	ulong addr = (ulong)kernel_entry | 1;
+	kernel_entry = (void *)addr;
+#endif
+	s = env_get("machid");
+	if (s) {
+		if (strict_strtoul(s, 16, &machid) < 0) {
+			debug("strict_strtoul failed!\n");
+			return;
+		}
+		printf("Using machid 0x%lx from environment\n", machid);
+	}
+
+	debug("## Transferring control to Linux (at address %08lx)" \
+		"...\n", (ulong) kernel_entry);
+	bootstage_mark(BOOTSTAGE_ID_RUN_OS);
+	announce_and_cleanup(fake);
+
+	if (IMAGE_ENABLE_OF_LIBFDT && images->ft_len)
+		r2 = (unsigned long)images->ft_addr;
+	else
+		r2 = gd->bd->bi_boot_params;
+
+	if (!fake) {
+#ifdef CONFIG_ARMV7_NONSEC
+		if (armv7_boot_nonsec()) {
+			armv7_init_nonsec();
+			secure_ram_addr(_do_nonsec_entry)(kernel_entry,
+							  0, machid, r2);
+		} else
+#endif
+			kernel_entry(0, machid, r2);
+	}
+#endif
+}
+
+/* Main Entry point for arm bootm implementation
+ *
+ * Modeled after the powerpc implementation
+ * DIFFERENCE: Instead of calling prep and go at the end
+ * they are called if subcommand is equal 0.
+ */
+int do_bootm_linux(int flag, int argc, char *const argv[],
+		   bootm_headers_t *images)
+{
+	/* No need for those on ARM */
+	if (flag & BOOTM_STATE_OS_BD_T || flag & BOOTM_STATE_OS_CMDLINE)
+		return -1;
+
+	if (flag & BOOTM_STATE_OS_PREP) {
+		boot_prep_linux(images);
+		return 0;
+	}
+
+	if (flag & (BOOTM_STATE_OS_GO | BOOTM_STATE_OS_FAKE_GO)) {
+		boot_jump_linux(images, flag);
+		return 0;
+	}
+
+	boot_prep_linux(images);
+	boot_jump_linux(images, flag);
+	return 0;
+}
+
+#if defined(CONFIG_BOOTM_VXWORKS)
+void boot_prep_vxworks(bootm_headers_t *images)
+{
+#if defined(CONFIG_OF_LIBFDT)
+	int off;
+
+	if (images->ft_addr) {
+		off = fdt_path_offset(images->ft_addr, "/memory");
+		if (off > 0) {
+			if (arch_fixup_fdt(images->ft_addr))
+				puts("## WARNING: fixup memory failed!\n");
+		}
+	}
+#endif
+	cleanup_before_linux();
+}
+void boot_jump_vxworks(bootm_headers_t *images)
+{
+#if defined(CONFIG_ARM64) && defined(CONFIG_ARMV8_PSCI)
+	armv8_setup_psci();
+	smp_kick_all_cpus();
+#endif
+
+	/* ARM VxWorks requires device tree physical address to be passed */
+	((void (*)(void *))images->ep)(images->ft_addr);
+}
+#endif