Initial revision

1 files changed, 302 insertions, 0 deletions

diff --git a/board/cray/L1/L1.c b/board/cray/L1/L1.c
new file mode 100644
index 0000000..f5dfba4
--- /dev/null
+++ b/board/cray/L1/L1.c
@@ -0,0 +1,302 @@
+/*
+ * (C) Copyright 2000
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * 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 <asm/processor.h>
+#include <405gp_i2c.h>
+#include <command.h>
+#include <cmd_nvedit.h>
+#include <cmd_bootm.h>
+#include <rtc.h>
+#include <net.h>
+#include <malloc.h>
+
+#define L1_MEMSIZE (32*1024*1024)
+
+/* the std. DHCP stufff */
+#define DHCP_ROUTER       3
+#define DHCP_NETMASK      1
+#define DHCP_BOOTFILE     67
+#define DHCP_ROOTPATH     17
+#define DHCP_HOSTNAME     12
+
+/* some extras used by CRAY
+ *
+ * on the server this looks like:
+ *
+ * option L1-initrd-image code 224 = string;
+ * option L1-initrd-image "/opt/craysv2/craymcu/l1/flash/initrd.image"
+ */
+#define DHCP_L1_INITRD  224
+
+/* new, [better?] way via official vendor-extensions, defining an option
+ * space.
+ * on the server this looks like:
+ *
+ * option space U-Boot;
+ * option U-Boot.initrd    code 3 = string;
+ * option U-Boot.bootcmd   code 4 = string;
+ * option U-Boot.bootflags code 5 = string;
+ * option U-Boot.rootdev   code 6 = string;
+ */
+#define DHCP_VENDOR_SPECX   43
+#define DHCP_VX_INITRD       3
+#define DHCP_VX_BOOTCMD      4
+#define DHCP_VX_BOOTFLAGS    5
+#define DHCP_VX_ROOTDEV      6
+
+/* Things DHCP server can tellme about.  If there's no flash address, then
+ * they dont participate in 'update' to flash, and we force their values
+ * back to '0' every boot to be sure to get them fresh from DHCP.  Yes, I
+ * know this is a pain...
+ *
+ * If I get no bootfile, boot from flash.  If rootpath, use that.  If no
+ * rootpath use initrd in flash.
+ */
+typedef struct dhcp_item_s {
+	u8 dhcp_option;
+	u8 dhcp_vendor_option;
+	char *dhcpvalue;
+	char *envname;
+} dhcp_item_t;
+static dhcp_item_t Things[] = {
+	{DHCP_ROUTER, 0, NULL, "gateway"},
+	{DHCP_NETMASK, 0, NULL, "netmask"},
+	{DHCP_BOOTFILE, 0, NULL, "bootfile"},
+	{DHCP_ROOTPATH, 0, NULL, "rootpath"},
+	{DHCP_HOSTNAME, 0, NULL, "hostname"},
+	{DHCP_L1_INITRD, 0, NULL, "initrd"},
+/* and the other way.. */
+	{DHCP_VENDOR_SPECX, DHCP_VX_INITRD, NULL, "initrd"},
+	{DHCP_VENDOR_SPECX, DHCP_VX_BOOTCMD, NULL, "bootcmd"},
+	{DHCP_VENDOR_SPECX, DHCP_VX_BOOTFLAGS, NULL, NULL},
+	{DHCP_VENDOR_SPECX, DHCP_VX_ROOTDEV, NULL, NULL},
+};
+
+#define N_THINGS ((sizeof(Things))/(sizeof(dhcp_item_t)))
+
+static void init_ecc_sdram (void);
+
+/* ------------------------------------------------------------------------- */
+int board_pre_init (void)
+{
+	init_ecc_sdram ();
+	mtdcr (uicsr, 0xFFFFFFFF);	/* clear all ints */
+	mtdcr (uicer, 0x00000000);	/* disable all ints */
+	mtdcr (uiccr, 0x00000020);	/* set all but FPGA SMI to be non-critical */
+	mtdcr (uicpr, 0xFFFFFFE0);	/* set int polarities */
+	mtdcr (uictr, 0x10000000);	/* set int trigger levels */
+	mtdcr (uicvcr, 0x00000001);	/* set vect base=0,INT0 highest priority */
+	mtdcr (uicsr, 0xFFFFFFFF);	/* clear all ints */
+	return 0;
+}
+
+/* ------------------------------------------------------------------------- */
+int checkboard (void)
+{
+	return (0);
+}
+
+/* ------------------------------------------------------------------------- */
+int misc_init_r (void)
+{
+	unsigned char *s, *e;
+	image_header_t *hdr;
+	time_t timestamp;
+	struct rtc_time tm;
+
+	hdr = (image_header_t *) (CFG_MONITOR_BASE - sizeof (image_header_t));
+	timestamp = (time_t) hdr->ih_time;
+	to_tm (timestamp, &tm);
+	printf ("Welcome to U-Boot on Cray L1. Compiled %4d-%02d-%02d  %2d:%02d:%02d (UTC)\n", tm.tm_year, tm.tm_mon, tm.tm_mday, tm.tm_hour, tm.tm_min, tm.tm_sec);
+
+#define FACTORY_SETTINGS 0xFFFC0000
+	if ((s = getenv ("ethaddr")) == NULL) {
+		e = (unsigned char *) (FACTORY_SETTINGS);
+		if (*(e + 0) != '0'
+			|| *(e + 1) != '0'
+			|| *(e + 2) != ':'
+			|| *(e + 3) != '4' || *(e + 4) != '0' || *(e + 17) != '\0') {
+			printf ("No valid MAC address in flash location 0x3C0000!\n");
+		} else {
+			printf ("Factory MAC: %s\n", e);
+			setenv ("ethaddr", e);
+		}
+	}
+	return (0);
+}
+
+/* ------------------------------------------------------------------------- */
+long int initdram (int board_type)
+{
+	return (L1_MEMSIZE);
+}
+
+/* ------------------------------------------------------------------------- */
+/* stubs so we can print dates w/o any nvram RTC.*/
+void rtc_get (struct rtc_time *tmp)
+{
+	return;
+}
+void rtc_set (struct rtc_time *tmp)
+{
+	return;
+}
+void rtc_reset (void)
+{
+	return;
+}
+
+/* ------------------------------------------------------------------------- */
+/*  Do sdram bank init in C so I can read it..
+ */
+static void init_ecc_sdram (void)
+{
+	unsigned long tmp, *p;
+
+	/* write SDRAM bank 0 register */
+	mtdcr (memcfga, mem_mb0cf);
+	mtdcr (memcfgd, 0x00062001);
+
+/* Set the SDRAM Timing reg, SDTR1 and the refresh timer reg, RTR.	*/
+/* To set the appropriate timings, we need to know the SDRAM speed.	*/
+/* We can use the PLB speed since the SDRAM speed is the same as	*/
+/* the PLB speed. The PLB speed is the FBK divider times the		*/
+/* 405GP reference clock, which on the L1 is 25Mhz.			*/
+/* Thus, if FBK div is 2, SDRAM is 50Mhz; if FBK div is 3, SDRAM is	*/
+/* 150Mhz; if FBK is 3, SDRAM is 150Mhz.				*/
+
+	/* divisor = ((mfdcr(strap)>> 28) & 0x3); */
+
+/* write SDRAM timing for 100Mhz. */
+	mtdcr (memcfga, mem_sdtr1);
+	mtdcr (memcfgd, 0x0086400D);
+
+/* write SDRAM refresh interval register */
+	mtdcr (memcfga, mem_rtr);
+	mtdcr (memcfgd, 0x05F00000);
+	udelay (200);
+
+/* sdram controller.*/
+	mtdcr (memcfga, mem_mcopt1);
+	mtdcr (memcfgd, 0x90800000);
+	udelay (200);
+
+/* disable ECC on all banks */
+	mtdcr (memcfga, mem_ecccf);
+	tmp = mfdcr (memcfgd);
+	tmp &= 0xff0fffff;
+	mtdcr (memcfga, mem_ecccf);
+	mtdcr (memcfgd, tmp);
+
+/* set up SDRAM Controller with ECC enabled */
+	mtdcr (memcfga, mem_mcopt1);
+	tmp = (mfdcr (memcfgd) & ~0xFFE00000) | 0x90800000;
+	mtdcr (memcfga, mem_mcopt1);
+	mtdcr (memcfgd, tmp);
+	udelay (600);
+
+/* fill all the memory */
+	for (p = (unsigned long) 0; ((unsigned long) p < L1_MEMSIZE);
+		 *p++ = 0L);
+	udelay (400);
+	mtdcr (memcfga, mem_ecccf);
+	tmp = mfdcr (memcfgd);
+
+/* enable ECC on bank 0 */
+	tmp |= 0x00800000;
+	mtdcr (memcfgd, tmp);
+	udelay (400);
+
+	return;
+}
+
+/* ------------------------------------------------------------------------- */
+static u8 *dhcp_env_update (u8 thing, u8 * pop)
+{
+	u8 i, oplen;
+
+	oplen = *(pop + 1);
+
+	if ((Things[thing].dhcpvalue = malloc (oplen)) == NULL) {
+		printf ("Whoops! failed to malloc space for DHCP thing %s\n",
+				Things[thing].envname);
+		return NULL;
+	}
+	for (i = 0; (i < oplen); i++)
+		if ((*(Things[thing].dhcpvalue + i) = *(pop + 2 + i)) == ' ')
+			break;
+	*(Things[thing].dhcpvalue + i) = '\0';
+
+/* set env. */
+	if (Things[thing].envname)
+		setenv (Things[thing].envname, Things[thing].dhcpvalue);
+	return (Things[thing].dhcpvalue);
+}
+
+/* ------------------------------------------------------------------------- */
+u8 *dhcp_vendorex_prep (u8 * e)
+{
+	u8 thing;
+
+/* ask for the things I want. */
+	*e++ = 55;					/* Parameter Request List */
+	*e++ = N_THINGS;
+	for (thing = 0; thing < N_THINGS; thing++)
+		*e++ = Things[thing].dhcp_option;
+	*e++ = 255;
+
+	return e;
+}
+
+/* ------------------------------------------------------------------------- */
+/* .. return NULL means it wasnt mine, non-null means I got it..*/
+u8 *dhcp_vendorex_proc (u8 * pop)
+{
+	u8 oplen, *sub_op, sub_oplen, *retval;
+	u8 thing = 0;
+
+	retval = NULL;
+	oplen = *(pop + 1);
+/* if pop is vender spec indicator, there are sub-options. */
+	if (*pop == DHCP_VENDOR_SPECX) {
+		for (sub_op = pop + 2;
+		     oplen && (sub_oplen = *(sub_op + 1));
+		     oplen -= sub_oplen, sub_op += (sub_oplen + 2)) {
+			for (thing = 0; thing < N_THINGS; thing++) {
+			    if (*sub_op == Things[thing].dhcp_vendor_option) {
+				if (!(retval = dhcp_env_update (thing, sub_op))) {
+					return NULL;
+				}
+			    }
+			}
+		}
+	} else {
+		for (thing = 0; thing < N_THINGS; thing++) {
+			if (*pop == Things[thing].dhcp_option)
+				if (!(retval = dhcp_env_update (thing, pop)))
+					return NULL;
+		}
+	}
+	return (thing >= N_THINGS ? NULL : pop);
+}