lwmon5.c

U-boot源码 ARM7启动代码

/*
 * (C) Copyright 2007
 * Stefan Roese, DENX Software Engineering, [e-mail].
 *
 * 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 <ppc440.h>
#include <asm/processor.h>
#include <asm/gpio.h>
#include <asm/io.h>

DECLARE_GLOBAL_DATA_PTR;

extern flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; /* info for FLASH chips	*/

ulong flash_get_size(ulong base, int banknum);
int misc_init_r_kbd(void);

int board_early_init_f(void)
{
	u32 sdr0_pfc1, sdr0_pfc2;
	u32 reg;

	/* PLB Write pipelining disabled. Denali Core workaround */
	mtdcr(plb0_acr, 0xDE000000);
	mtdcr(plb1_acr, 0xDE000000);

	/*--------------------------------------------------------------------
	 * Setup the interrupt controller polarities, triggers, etc.
	 *-------------------------------------------------------------------*/
	mtdcr(uic0sr, 0xffffffff);  /* clear all. if write with 1 then the status is cleared  */
	mtdcr(uic0er, 0x00000000);  /* disable all */
	mtdcr(uic0cr, 0x00000000);  /* we have not critical interrupts at the moment */
	mtdcr(uic0pr, 0xFFBFF1EF);  /* Adjustment of the polarity */
	mtdcr(uic0tr, 0x00000900);  /* per ref-board manual */
	mtdcr(uic0vr, 0x00000000);  /* int31 highest, base=0x000 is within DDRAM */
	mtdcr(uic0sr, 0xffffffff);  /* clear all */

	mtdcr(uic1sr, 0xffffffff);  /* clear all */
	mtdcr(uic1er, 0x00000000);  /* disable all */
	mtdcr(uic1cr, 0x00000000);  /* all non-critical */
	mtdcr(uic1pr, 0xFFFFC6A5);  /* Adjustment of the polarity */
	mtdcr(uic1tr, 0x60000040);  /* per ref-board manual */
	mtdcr(uic1vr, 0x00000000);  /* int31 highest, base=0x000 is within DDRAM */
	mtdcr(uic1sr, 0xffffffff);  /* clear all */

	mtdcr(uic2sr, 0xffffffff);  /* clear all */
	mtdcr(uic2er, 0x00000000);  /* disable all */
	mtdcr(uic2cr, 0x00000000);  /* all non-critical */
	mtdcr(uic2pr, 0x27C00000);  /* Adjustment of the polarity */
	mtdcr(uic2tr, 0x3C000000);  /* per ref-board manual */
	mtdcr(uic2vr, 0x00000000);  /* int31 highest, base=0x000 is within DDRAM */
	mtdcr(uic2sr, 0xffffffff);  /* clear all */

	/* Trace Pins are disabled. SDR0_PFC0 Register */
	mtsdr(SDR0_PFC0, 0x0);

	/* select Ethernet pins */
	mfsdr(SDR0_PFC1, sdr0_pfc1);
	/* SMII via ZMII */
	sdr0_pfc1 = (sdr0_pfc1 & ~SDR0_PFC1_SELECT_MASK) |
		SDR0_PFC1_SELECT_CONFIG_6;
	mfsdr(SDR0_PFC2, sdr0_pfc2);
	sdr0_pfc2 = (sdr0_pfc2 & ~SDR0_PFC2_SELECT_MASK) |
		SDR0_PFC2_SELECT_CONFIG_6;

	/* enable SPI (SCP) */
	sdr0_pfc1 = (sdr0_pfc1 & ~SDR0_PFC1_SIS_MASK) | SDR0_PFC1_SIS_SCP_SEL;

	mtsdr(SDR0_PFC2, sdr0_pfc2);
	mtsdr(SDR0_PFC1, sdr0_pfc1);

	mtsdr(SDR0_PFC4, 0x80000000);

	/* PCI arbiter disabled */
	/* PCI Host Configuration disbaled */
	mfsdr(sdr_pci0, reg);
	reg = 0;
	mtsdr(sdr_pci0, 0x00000000 | reg);

	gpio_write_bit(CFG_GPIO_FLASH_WP, 1);

	/*
	 * Reset PHY's:
	 * The PHY's need a 2nd reset pulse, since the MDIO address is latched
	 * upon reset, and with the first reset upon powerup, the addresses are
	 * not latched reliable, since the IRQ line is multiplexed with an
	 * MDIO address. A 2nd reset at this time will make sure, that the
	 * correct address is latched.
	 */
	gpio_write_bit(CFG_GPIO_PHY0_RST, 1);
	gpio_write_bit(CFG_GPIO_PHY1_RST, 1);
	udelay(1000);
	gpio_write_bit(CFG_GPIO_PHY0_RST, 0);
	gpio_write_bit(CFG_GPIO_PHY1_RST, 0);
	udelay(1000);
	gpio_write_bit(CFG_GPIO_PHY0_RST, 1);
	gpio_write_bit(CFG_GPIO_PHY1_RST, 1);

	return 0;
}

/*---------------------------------------------------------------------------+
  | misc_init_r.
  +---------------------------------------------------------------------------*/
int misc_init_r(void)
{
	u32 pbcr;
	int size_val = 0;
	u32 reg;
	unsigned long usb2d0cr = 0;
	unsigned long usb2phy0cr, usb2h0cr = 0;
	unsigned long sdr0_pfc1;

	/*
	 * FLASH stuff...
	 */

	/* Re-do sizing to get full correct info */

	/* adjust flash start and offset */
	gd->bd->bi_flashstart = 0 - gd->bd->bi_flashsize;
	gd->bd->bi_flashoffset = 0;

	mfebc(pb0cr, pbcr);
	switch (gd->bd->bi_flashsize) {
	case 1 << 20:
		size_val = 0;
		break;
	case 2 << 20:
		size_val = 1;
		break;
	case 4 << 20:
		size_val = 2;
		break;
	case 8 << 20:
		size_val = 3;
		break;
	case 16 << 20:
		size_val = 4;
		break;
	case 32 << 20:
		size_val = 5;
		break;
	case 64 << 20:
		size_val = 6;
		break;
	case 128 << 20:
		size_val = 7;
		break;
	}
	pbcr = (pbcr & 0x0001ffff) | gd->bd->bi_flashstart | (size_val << 17);
	mtebc(pb0cr, pbcr);

	/*
	 * Re-check to get correct base address
	 */
	flash_get_size(gd->bd->bi_flashstart, 0);

	/* Monitor protection ON by default */
	(void)flash_protect(FLAG_PROTECT_SET,
			    -CFG_MONITOR_LEN,
			    0xffffffff,
			    &flash_info[1]);

	/* Env protection ON by default */
	(void)flash_protect(FLAG_PROTECT_SET,
			    CFG_ENV_ADDR_REDUND,
			    CFG_ENV_ADDR_REDUND + 2*CFG_ENV_SECT_SIZE - 1,
			    &flash_info[1]);

	/*
	 * USB suff...
	 */
	/* SDR Setting */
	mfsdr(SDR0_PFC1, sdr0_pfc1);
	mfsdr(SDR0_USB0, usb2d0cr);
	mfsdr(SDR0_USB2PHY0CR, usb2phy0cr);
	mfsdr(SDR0_USB2H0CR, usb2h0cr);

	usb2phy0cr = usb2phy0cr &~SDR0_USB2PHY0CR_XOCLK_MASK;
	usb2phy0cr = usb2phy0cr | SDR0_USB2PHY0CR_XOCLK_EXTERNAL;	/*0*/
	usb2phy0cr = usb2phy0cr &~SDR0_USB2PHY0CR_WDINT_MASK;
	usb2phy0cr = usb2phy0cr | SDR0_USB2PHY0CR_WDINT_16BIT_30MHZ;	/*1*/
	usb2phy0cr = usb2phy0cr &~SDR0_USB2PHY0CR_DVBUS_MASK;
	usb2phy0cr = usb2phy0cr | SDR0_USB2PHY0CR_DVBUS_PURDIS;		/*0*/
	usb2phy0cr = usb2phy0cr &~SDR0_USB2PHY0CR_DWNSTR_MASK;
	usb2phy0cr = usb2phy0cr | SDR0_USB2PHY0CR_DWNSTR_HOST;		/*1*/
	usb2phy0cr = usb2phy0cr &~SDR0_USB2PHY0CR_UTMICN_MASK;
	usb2phy0cr = usb2phy0cr | SDR0_USB2PHY0CR_UTMICN_HOST;		/*1*/

	/* An 8-bit/60MHz interface is the only possible alternative
	   when connecting the Device to the PHY */
	usb2h0cr   = usb2h0cr &~SDR0_USB2H0CR_WDINT_MASK;
	usb2h0cr   = usb2h0cr | SDR0_USB2H0CR_WDINT_16BIT_30MHZ;	/*1*/

	mtsdr(SDR0_PFC1, sdr0_pfc1);
	mtsdr(SDR0_USB0, usb2d0cr);
	mtsdr(SDR0_USB2PHY0CR, usb2phy0cr);
	mtsdr(SDR0_USB2H0CR, usb2h0cr);

	/*
	 * Clear resets
	 */
	udelay (1000);
	mtsdr(SDR0_SRST1, 0x00000000);
	udelay (1000);
	mtsdr(SDR0_SRST0, 0x00000000);

	printf("USB:   Host(int phy) Device(ext phy)\n");

	/*
	 * Clear PLB4A0_ACR[WRP]
	 * This fix will make the MAL burst disabling patch for the Linux
	 * EMAC driver obsolete.
	 */
	reg = mfdcr(plb4_acr) & ~PLB4_ACR_WRP;
	mtdcr(plb4_acr, reg);

	/*
	 * Reset Lime controller
	 */
	gpio_write_bit(CFG_GPIO_LIME_S, 1);
	udelay(500);
	gpio_write_bit(CFG_GPIO_LIME_RST, 1);

	/* Lime memory clock adjusted to 100MHz */
	out_be32((void *)CFG_LIME_SDRAM_CLOCK, CFG_LIME_CLOCK_100MHZ);
	/* Wait untill time expired. Because of requirements in lime manual */
	udelay(300);
	/* Write lime controller memory parameters */
	out_be32((void *)CFG_LIME_MMR, CFG_LIME_MMR_VALUE);

	/*
	 * Init display controller
	 */
	/* Setup dot clock (internal PLL, division rate 1/16) */
	out_be32((void *)0xc1fd0100, 0x00000f00);

	/* Lime L0 init (16 bpp, 640x480) */
	out_be32((void *)0xc1fd0020, 0x801401df);
	out_be32((void *)0xc1fd0024, 0x0);
	out_be32((void *)0xc1fd0028, 0x0);
	out_be32((void *)0xc1fd002c, 0x0);
	out_be32((void *)0xc1fd0110, 0x0);
	out_be32((void *)0xc1fd0114, 0x0);
	out_be32((void *)0xc1fd0118, 0x01df0280);

	/* Display timing init */
	out_be32((void *)0xc1fd0004, 0x031f0000);
	out_be32((void *)0xc1fd0008, 0x027f027f);
	out_be32((void *)0xc1fd000c, 0x015f028f);
	out_be32((void *)0xc1fd0010, 0x020c0000);
	out_be32((void *)0xc1fd0014, 0x01df01ea);
	out_be32((void *)0xc1fd0018, 0x0);
	out_be32((void *)0xc1fd001c, 0x01e00280);

#if 1
	/*
	 * Clear framebuffer using Lime's drawing engine
	 * (draw blue rect. with white border around it)
	 */
	/* Setup mode and fbbase, xres, fg, bg */
	out_be32((void *)0xc1ff0420, 0x8300);
	out_be32((void *)0xc1ff0440, 0x0000);
	out_be32((void *)0xc1ff0444, 0x0280);
	out_be32((void *)0xc1ff0480, 0x7fff);