131 lines
4.1 KiB
C
131 lines
4.1 KiB
C
/*
|
|
*
|
|
* (c) 2007 Pengutronix, Sascha Hauer <s.hauer@pengutronix.de>
|
|
* (c) 2010 Eukrea Electromatique, Eric Bénard <eric@eukrea.com>
|
|
*
|
|
* 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 <init.h>
|
|
#include <mach/imx-regs.h>
|
|
#include <mach/imx-pll.h>
|
|
#include <mach/esdctl.h>
|
|
#include <asm/cache-l2x0.h>
|
|
#include <asm/io.h>
|
|
#include <mach/imx-nand.h>
|
|
#include <asm/barebox-arm.h>
|
|
#include <asm-generic/memory_layout.h>
|
|
#include <asm/system.h>
|
|
|
|
static void __bare_init __naked insdram(void)
|
|
{
|
|
uint32_t r;
|
|
|
|
/* setup a stack to be able to call imx_nand_load_image() */
|
|
r = STACK_BASE + STACK_SIZE - 12;
|
|
__asm__ __volatile__("mov sp, %0" : : "r"(r));
|
|
|
|
imx_nand_load_image((void *)TEXT_BASE, 256 * 1024);
|
|
|
|
board_init_lowlevel_return();
|
|
}
|
|
|
|
#define MX25_CCM_MCR 0x64
|
|
#define MX25_CCM_CGR0 0x0c
|
|
#define MX25_CCM_CGR1 0x10
|
|
#define MX25_CCM_CGR2 0x14
|
|
|
|
void __bare_init __naked board_init_lowlevel(void)
|
|
{
|
|
uint32_t r;
|
|
unsigned int *trg, *src;
|
|
int i;
|
|
|
|
/* AIPS setup - Only setup MPROTx registers. The PACR default values are good.
|
|
* Set all MPROTx to be non-bufferable, trusted for R/W,
|
|
* not forced to user-mode.
|
|
*/
|
|
writel(0x77777777, 0x43f00000);
|
|
writel(0x77777777, 0x43f00004);
|
|
writel(0x77777777, 0x53f00000);
|
|
writel(0x77777777, 0x53f00004);
|
|
|
|
/* MAX (Multi-Layer AHB Crossbar Switch) setup
|
|
* MPR - priority for MX25 is (SDHC2/SDMA)>USBOTG>RTIC>IAHB>DAHB
|
|
*/
|
|
writel(0x00002143, 0x43f04000);
|
|
writel(0x00002143, 0x43f04100);
|
|
writel(0x00002143, 0x43f04200);
|
|
writel(0x00002143, 0x43f04300);
|
|
writel(0x00002143, 0x43f04400);
|
|
/* SGPCR - always park on last master */
|
|
writel(0x10, 0x43f04010);
|
|
writel(0x10, 0x43f04110);
|
|
writel(0x10, 0x43f04210);
|
|
writel(0x10, 0x43f04310);
|
|
writel(0x10, 0x43f04410);
|
|
/* MGPCR - restore default values */
|
|
writel(0x0, 0x43f04800);
|
|
writel(0x0, 0x43f04900);
|
|
writel(0x0, 0x43f04a00);
|
|
writel(0x0, 0x43f04b00);
|
|
writel(0x0, 0x43f04c00);
|
|
|
|
/* Configure M3IF registers
|
|
* M3IF Control Register (M3IFCTL) for MX25
|
|
* MRRP[0] = LCDC on priority list (1 << 0) = 0x00000001
|
|
* MRRP[1] = MAX1 not on priority list (0 << 1) = 0x00000000
|
|
* MRRP[2] = MAX0 not on priority list (0 << 2) = 0x00000000
|
|
* MRRP[3] = USB HOST not on priority list (0 << 3) = 0x00000000
|
|
* MRRP[4] = SDMA not on priority list (0 << 4) = 0x00000000
|
|
* MRRP[5] = SD/ATA/FEC not on priority list (0 << 5) = 0x00000000
|
|
* MRRP[6] = SCMFBC not on priority list (0 << 6) = 0x00000000
|
|
* MRRP[7] = CSI not on priority list (0 << 7) = 0x00000000
|
|
* ----------
|
|
* 0x00000001
|
|
*/
|
|
writel(0x1, 0xb8003000);
|
|
|
|
/* enable all the clocks */
|
|
writel(0x038A81A2, IMX_CCM_BASE + MX25_CCM_CGR0);
|
|
writel(0x24788F00, IMX_CCM_BASE + MX25_CCM_CGR1);
|
|
writel(0x00004438, IMX_CCM_BASE + MX25_CCM_CGR2);
|
|
writel(0x00, IMX_CCM_BASE + MX25_CCM_MCR);
|
|
|
|
#ifdef CONFIG_NAND_IMX_BOOT
|
|
/* skip NAND boot if not running from NFC space */
|
|
r = get_pc();
|
|
if (r < IMX_NFC_BASE || r > IMX_NFC_BASE + 0x1000)
|
|
board_init_lowlevel_return();
|
|
|
|
src = (unsigned int *)IMX_NFC_BASE;
|
|
trg = (unsigned int *)TEXT_BASE;
|
|
|
|
/* Move ourselves out of NFC SRAM */
|
|
for (i = 0; i < 0x1000 / sizeof(int); i++)
|
|
*trg++ = *src++;
|
|
|
|
/* Jump to SDRAM */
|
|
r = (unsigned int)&insdram;
|
|
__asm__ __volatile__("mov pc, %0" : : "r"(r));
|
|
#else
|
|
board_init_lowlevel_return();
|
|
#endif
|
|
}
|