i.MX28: Move SPL to arch/arm/cpu/arm926ejs/mx28

This moves SPL to common location so it can be reused by multiple boards. Also,
this commit adjusts M28 SoM to avoid breakage due to the move.

Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
Cc: Wolfgang Denk <wd@denx.de>
Cc: Detlev Zundel <dzu@denx.de>
Cc: Stefano Babic <sbabic@denx.de>

1 files changed, 87 insertions, 0 deletions

diff --git a/arch/arm/cpu/arm926ejs/mx28/spl_boot.c b/arch/arm/cpu/arm926ejs/mx28/spl_boot.c
new file mode 100644
index 0000000000..3cd4c249ab
--- /dev/null
+++ b/arch/arm/cpu/arm926ejs/mx28/spl_boot.c
@@ -0,0 +1,87 @@
+/*
+ * Freescale i.MX28 Boot setup
+ *
+ * Copyright (C) 2011 Marek Vasut <marek.vasut@gmail.com>
+ * on behalf of DENX Software Engineering GmbH
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * 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 <config.h>
+#include <asm/io.h>
+#include <asm/arch/iomux-mx28.h>
+#include <asm/arch/imx-regs.h>
+
+#include "mx28_init.h"
+
+/*
+ * This delay function is intended to be used only in early stage of boot, where
+ * clock are not set up yet. The timer used here is reset on every boot and
+ * takes a few seconds to roll. The boot doesn't take that long, so to keep the
+ * code simple, it doesn't take rolling into consideration.
+ */
+#define	HW_DIGCTRL_MICROSECONDS	0x8001c0c0
+void early_delay(int delay)
+{
+	uint32_t st = readl(HW_DIGCTRL_MICROSECONDS);
+	st += delay;
+	while (st > readl(HW_DIGCTRL_MICROSECONDS))
+		;
+}
+
+void mx28_common_spl_init(const iomux_cfg_t *iomux_setup,
+			const unsigned int iomux_size)
+{
+	mxs_iomux_setup_multiple_pads(iomux_setup, iomux_size);
+	mx28_power_init();
+	mx28_mem_init();
+	mx28_power_wait_pswitch();
+}
+
+/* Support aparatus */
+inline void board_init_f(unsigned long bootflag)
+{
+	for (;;)
+		;
+}
+
+inline void board_init_r(gd_t *id, ulong dest_addr)
+{
+	for (;;)
+		;
+}
+
+inline int printf(const char *fmt, ...)
+{
+	return 0;
+}
+
+inline void __coloured_LED_init(void) {}
+inline void __red_LED_on(void) {}
+void coloured_LED_init(void)
+	__attribute__((weak, alias("__coloured_LED_init")));
+void red_LED_on(void)
+	__attribute__((weak, alias("__red_LED_on")));
+void hang(void) __attribute__ ((noreturn));
+void hang(void)
+{
+	for (;;)
+		;
+}