MFp4 (e500):

Add support for U-Boot. This uses the U-Boot API as developed by
Rafal and which is (will be) part of U-Boot 1.3.2 and later.

Credits to: raj@

2 files changed, 229 insertions, 0 deletions

diff --git a/sys/boot/uboot/common/Makefile.inc b/sys/boot/uboot/common/Makefile.inc
new file mode 100644
index 0000000..5d20372
--- /dev/null
+++ b/sys/boot/uboot/common/Makefile.inc
@@ -0,0 +1,3 @@
+# $FreeBSD$
+
+SRCS+=	main.c
diff --git a/sys/boot/uboot/common/main.c b/sys/boot/uboot/common/main.c
new file mode 100644
index 0000000..2c793e7
--- /dev/null
+++ b/sys/boot/uboot/common/main.c
@@ -0,0 +1,226 @@
+/*-
+ * Copyright (c) 2000 Benno Rice <benno@jeamland.net>
+ * Copyright (c) 2000 Stephane Potvin <sepotvin@videotron.ca>
+ * Copyright (c) 2007 Semihalf, Rafal Jaworowski <raj@semihalf.com>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <stand.h>
+#include "bootstrap.h"
+
+#include "libuboot.h"
+#include "api_public.h"
+
+struct uboot_devdesc	currdev;
+struct arch_switch	archsw;		/* MI/MD interface boundary */
+int			devs_no;
+
+extern char end[];
+extern char bootprog_name[];
+extern char bootprog_rev[];
+extern char bootprog_date[];
+extern char bootprog_maker[];
+
+static char bootargs[128];
+
+extern unsigned char _etext[];
+extern unsigned char _edata[];
+extern unsigned char __bss_start[];
+extern unsigned char __sbss_start[];
+extern unsigned char __sbss_end[];
+extern unsigned char _end[];
+
+extern void *		syscall_ptr;
+
+struct sys_info *	ub_get_sys_info(void);
+
+
+void dump_si(struct sys_info *si)
+{
+#ifdef DEBUG
+	printf("sys info:\n");
+	printf("  clkbus\t= 0x%08x\n", si->clk_bus);
+	printf("  clkcpu\t= 0x%08x\n", si->clk_cpu);
+	printf("  bar\t\t= 0x%08x\n", si->bar);
+#endif
+}
+
+static void dump_sig(struct api_signature *sig)
+{
+#ifdef DEBUG
+	printf("signature:\n");
+	printf("  version\t= %d\n", sig->version);
+	printf("  checksum\t= 0x%08x\n", sig->checksum);
+	printf("  sc entry\t= 0x%08x\n", sig->syscall);
+#endif
+}
+static void
+dump_addr_info(void)
+{
+#ifdef DEBUG
+	printf("\naddresses info:\n");
+	printf(" _etext (sdata) = 0x%08x\n", (u_int32_t)_etext);
+	printf(" _edata         = 0x%08x\n", (u_int32_t)_edata);
+	printf(" __sbss_start   = 0x%08x\n", (u_int32_t)__sbss_start);
+	printf(" __sbss_end     = 0x%08x\n", (u_int32_t)__sbss_end);
+	printf(" __sbss_start   = 0x%08x\n", (u_int32_t)__bss_start);
+	printf(" _end           = 0x%08x\n", (u_int32_t)_end);
+	printf(" syscall entry  = 0x%08x\n", (u_int32_t)syscall_ptr);
+#endif
+}
+
+static uint64_t
+memsize(int flags)
+{
+	int i;
+	struct sys_info * si;
+
+	if ((si = ub_get_sys_info()) == NULL)
+		return 0;
+	
+	for (i = 0; i < si->mr_no; i++)
+		if (si->mr[i].flags == flags && si->mr[i].size)
+			return (si->mr[i].size);
+
+	return 0;
+}
+
+int
+main(void)
+{
+	int		i;
+	char		*ch;
+	int		bargc;
+	char		**bargv;
+
+	struct api_signature *sig = NULL;
+
+	if (!api_search_sig(&sig))
+		return -1;
+
+	syscall_ptr = sig->syscall;
+	if (syscall_ptr == NULL)
+		return -2;
+
+	if (sig->version > API_SIG_VERSION)
+		return -3;
+
+        /* Clear BSS sections */
+	bzero(__sbss_start, __sbss_end - __sbss_start);
+	bzero(__bss_start, _end - __bss_start);
+
+	/*
+         * Set up console.
+         */
+	cons_probe();
+
+	printf("Compatible API signature found @%x\n", sig);
+
+	dump_sig(sig);
+	dump_addr_info();
+
+	/*
+	 * Initialise the heap as early as possible.  Once this is done,
+	 * alloc() is usable. The stack is buried inside us, so this is
+	 * safe.
+	 */
+	setheap((void *)end, (void *)(end + 512 * 1024));
+
+	/*
+	 * Enumerate U-Boot devices
+	 */
+	if ((devs_no = ub_dev_enum()) == 0)
+		panic("no devices found");
+	printf("Number of U-Boot devices found %d\n", devs_no);
+
+	/* XXX all our dv_init()s currently don't do anything... */
+	/*
+	 * March through the device switch probing for things.
+	 */
+	for (i = 0; devsw[i] != NULL; i++)
+		if (devsw[i]->dv_init != NULL)
+			(devsw[i]->dv_init)();
+
+	printf("\n");
+	printf("%s, Revision %s\n", bootprog_name, bootprog_rev);
+	printf("(%s, %s)\n", bootprog_maker, bootprog_date);
+	printf("Memory: %lldMB\n", memsize(MR_ATTR_DRAM) / 1024 / 1024);
+	printf("FLASH:  %lldMB\n", memsize(MR_ATTR_FLASH) / 1024 / 1024);
+//	printf("SRAM:   %lldMB\n", memsize(MR_ATTR_SRAM) / 1024 / 1024);
+
+	/* XXX only support netbooting for now */
+	for (i = 0; devsw[i] != NULL; i++)
+		if (strncmp(devsw[i]->dv_name, "net", strlen(devsw[i]->dv_name)) == 0)
+			break;
+
+	if (devsw[i] == NULL)
+		panic("no network devices?!");
+
+	currdev.d_dev = devsw[i];
+	currdev.d_type = currdev.d_dev->dv_type;
+	currdev.d_unit = 0;
+
+	env_setenv("currdev", EV_VOLATILE, uboot_fmtdev(&currdev),
+			uboot_setcurrdev, env_nounset);
+	env_setenv("loaddev", EV_VOLATILE, uboot_fmtdev(&currdev),
+			env_noset, env_nounset);
+
+	setenv("LINES", "24", 1);		/* optional */
+	setenv("prompt", "loader>", 1);
+
+	archsw.arch_getdev = uboot_getdev;
+	archsw.arch_copyin = uboot_copyin;
+	archsw.arch_copyout = uboot_copyout;
+	archsw.arch_readin = uboot_readin;
+	archsw.arch_autoload = uboot_autoload;
+
+	interact();				/* doesn't return */
+
+	return 0;
+}
+
+
+COMMAND_SET(heap, "heap", "show heap usage", command_heap);
+static int
+command_heap(int argc, char *argv[])
+{
+	printf("heap base at %p, top at %p, used %ld\n", end, sbrk(0),
+		sbrk(0) - end);
+
+	return(CMD_OK);
+}
+
+COMMAND_SET(reboot, "reboot", "reboot the system", command_reboot);
+static int
+command_reboot(int argc, char *argv[])
+{
+	printf("Resetting...\n");
+	ub_reset();
+
+	printf("Reset failed!\n");
+	while(1);
+}