sh: First support code of SuperH.

Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>

1 files changed, 163 insertions, 0 deletions

diff --git a/lib_sh/board.c b/lib_sh/board.c
new file mode 100644
index 0000000..c3f8462
--- /dev/null
+++ b/lib_sh/board.c
@@ -0,0 +1,163 @@
+/*
+ * Copyright (C) 2007
+ * Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <command.h>
+#include <malloc.h>
+#include <devices.h>
+#include <version.h>
+#include <net.h>
+#include <environment.h>
+
+extern void malloc_bin_reloc (void);
+extern int cpu_init(void);
+extern int board_init(void);
+extern int dram_init(void);
+extern int watchdog_init(void);
+extern int timer_init(void);
+
+const char version_string[] = U_BOOT_VERSION" (" __DATE__ " - " __TIME__ ")";
+
+unsigned long monitor_flash_len = CFG_MONITOR_LEN;
+
+static unsigned long mem_malloc_start;
+static unsigned long mem_malloc_end;
+static unsigned long mem_malloc_brk;
+
+static void mem_malloc_init (void)
+{
+
+	mem_malloc_start = (TEXT_BASE - CFG_GBL_DATA_SIZE - CFG_MALLOC_LEN);
+	mem_malloc_end = (mem_malloc_start + CFG_MALLOC_LEN - 16);
+	mem_malloc_brk = mem_malloc_start;
+	memset ((void *) mem_malloc_start, 0, 
+		(mem_malloc_end - mem_malloc_start));
+}
+
+void *sbrk (ptrdiff_t increment)
+{
+	unsigned long old = mem_malloc_brk;
+	unsigned long new = old + increment;
+
+	if ((new < mem_malloc_start) ||
+	    (new > mem_malloc_end)) {
+		return NULL;
+	}
+
+	mem_malloc_brk = new;
+	return (void *) old;
+}
+
+typedef int (init_fnc_t) (void);
+
+init_fnc_t *init_sequence[] =
+{
+	cpu_init,		/* basic cpu dependent setup */
+	board_init,		/* basic board dependent setup */
+	interrupt_init,		/* set up exceptions */
+	env_init,		/* event init */
+	serial_init,		/* SCIF init */
+	watchdog_init,
+	console_init_f,
+	display_options,
+	checkcpu,
+	checkboard,
+	dram_init,		/* SDRAM init */
+	NULL			/* Terminate this list */
+};
+
+void sh_generic_init (void)
+{
+	DECLARE_GLOBAL_DATA_PTR;
+
+	bd_t *bd;
+	init_fnc_t **init_fnc_ptr;
+	char *s, *e;
+	int i;
+
+	memset (gd, 0, CFG_GBL_DATA_SIZE);
+
+	gd->flags |= GD_FLG_RELOC;	/* tell others: relocation done */
+
+	gd->bd = (bd_t *) (gd + 1);		/* At end of global data */
+	gd->baudrate = CONFIG_BAUDRATE;
+
+	gd->cpu_clk = CONFIG_SYS_CLK_FREQ;
+
+	bd = gd->bd;
+	bd->bi_memstart	= CFG_SDRAM_BASE;
+	bd->bi_memsize = CFG_SDRAM_SIZE;
+	bd->bi_flashstart = CFG_FLASH_BASE;
+#if defined(CFG_SRAM_BASE) && defined(CFG_SRAM_SIZE)
+	bd->bi_sramstart= CFG_SRAM_BASE;
+	bd->bi_sramsize	= CFG_SRAM_SIZE;
+#endif
+	bd->bi_baudrate	= CONFIG_BAUDRATE;
+
+	for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
+		if ((*init_fnc_ptr) () != 0) {
+			hang();
+		}
+	}
+	
+	timer_init();
+	
+	/* flash_init need timer_init().(TMU) */
+	bd->bi_flashsize = flash_init();
+	printf("FLASH: %dMB\n", bd->bi_flashsize / (1024*1024));
+
+	mem_malloc_init();
+	malloc_bin_reloc();
+	env_relocate();
+
+#if  (CONFIG_COMMANDS & CFG_CMD_NET)
+	bd->bi_ip_addr = getenv_IPaddr ("ipaddr");
+	s = getenv ("ethaddr");
+	for (i = 0; i < 6; ++i) {
+		bd->bi_enetaddr[i] = s ? simple_strtoul (s, &e, 16) : 0;
+		if (s) s = (*e) ? e + 1 : e;
+	}
+#endif
+	devices_init();
+	jumptable_init();
+	console_init_r();
+	interrupt_init();
+#ifdef BOARD_LATE_INIT
+	board_late_init ();
+#endif
+#if (CONFIG_COMMANDS & CFG_CMD_NET)
+#if defined(CONFIG_NET_MULTI)
+	puts ("Net:   ");
+#endif
+	eth_initialize(gd->bd);
+#endif
+	while (1) {
+		main_loop();
+	}
+}
+
+
+/***********************************************************************/
+
+void hang (void)
+{
+	puts ("Board ERROR \n");
+	for (;;);
+}