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Diffstat (limited to 'board/amcc/acadia/acadia.c')
-rw-r--r--board/amcc/acadia/acadia.c152
1 files changed, 152 insertions, 0 deletions
diff --git a/board/amcc/acadia/acadia.c b/board/amcc/acadia/acadia.c
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+/*
+ * (C) Copyright 2007
+ * Stefan Roese, DENX Software Engineering, sr@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>
+
+extern void board_pll_init_f(void);
+
+/* Some specific Acadia Defines */
+#define CPLD_BASE 0x80000000
+
+void liveoak_gpio_init(void)
+{
+ /*
+ * GPIO0 setup (select GPIO or alternate function)
+ */
+ out32(GPIO0_OSRL, CFG_GPIO0_OSRL);
+ out32(GPIO0_OSRH, CFG_GPIO0_OSRH); /* output select */
+ out32(GPIO0_ISR1L, CFG_GPIO0_ISR1L);
+ out32(GPIO0_ISR1H, CFG_GPIO0_ISR1H); /* input select */
+ out32(GPIO0_TSRL, CFG_GPIO0_TSRL);
+ out32(GPIO0_TSRH, CFG_GPIO0_TSRH); /* three-state select */
+ out32(GPIO0_TCR, CFG_GPIO0_TCR); /* enable output driver for outputs */
+
+ /*
+ * Ultra (405EZ) was nice enough to add another GPIO controller
+ */
+ out32(GPIO1_OSRH, CFG_GPIO1_OSRH); /* output select */
+ out32(GPIO1_OSRL, CFG_GPIO1_OSRL);
+ out32(GPIO1_ISR1H, CFG_GPIO1_ISR1H); /* input select */
+ out32(GPIO1_ISR1L, CFG_GPIO1_ISR1L);
+ out32(GPIO1_TSRH, CFG_GPIO1_TSRH); /* three-state select */
+ out32(GPIO1_TSRL, CFG_GPIO1_TSRL);
+ out32(GPIO1_TCR, CFG_GPIO1_TCR); /* enable output driver for outputs */
+}
+
+#if 0 /* test-only: not called at all??? */
+void ext_bus_cntlr_init(void)
+{
+#if (defined(EBC_PB4AP) && defined(EBC_PB4CR) && !(CFG_INIT_DCACHE_CS == 4))
+ mtebc(pb4ap, EBC_PB4AP);
+ mtebc(pb4cr, EBC_PB4CR);
+#endif
+}
+#endif
+
+int board_early_init_f(void)
+{
+ unsigned int reg;
+
+#if 0 /* test-only */
+ /*
+ * If CRAM memory and SPI/NAND boot, and if the CRAM memory is
+ * already initialized by the pre-loader then we can't reinitialize
+ * CPR registers, GPIO registers and EBC registers as this will
+ * have the effect of un-initializing CRAM.
+ */
+ spr_reg = (volatile unsigned long) mfspr(SPRG7);
+ if (spr_reg != LOAK_CRAM) { /* != CRAM */
+ board_pll_init_f();
+ liveoak_gpio_init();
+ ext_bus_cntlr_init();
+
+ mtebc(pb1ap, CFG_EBC_PB1AP);
+ mtebc(pb1cr, CFG_EBC_PB1CR);
+
+ mtebc(pb2ap, CFG_EBC_PB2AP);
+ mtebc(pb2cr, CFG_EBC_PB2CR);
+ }
+#else
+ board_pll_init_f();
+ liveoak_gpio_init();
+/* ext_bus_cntlr_init(); */
+#endif
+
+#if 0 /* test-only (orig) */
+ /*
+ * If we boot from NAND Flash, we are running in
+ * RAM, so disable the EBC_CS0 so that it goes back
+ * to the NOR Flash. It will be enabled later
+ * for the NAND Flash on EBC_CS1
+ */
+ mfsdr(sdrultra0, reg);
+ mtsdr(sdrultra0, reg & ~SDR_ULTRA0_CSNSEL0);
+#endif
+#if 0 /* test-only */
+ /* configure for NAND */
+ mfsdr(sdrultra0, reg);
+ reg &= ~SDR_ULTRA0_CSN_MASK;
+ reg |= SDR_ULTRA0_CSNSEL0 >> CFG_NAND_CS;
+ mtsdr(sdrultra0, reg & ~SDR_ULTRA0_CSNSEL0);
+#endif
+
+ /* USB Host core needs this bit set */
+ mfsdr(sdrultra1, reg);
+ mtsdr(sdrultra1, reg | SDR_ULTRA1_LEDNENABLE);
+
+ mtdcr(uicsr, 0xFFFFFFFF); /* clear all ints */
+ mtdcr(uicer, 0x00000000); /* disable all ints */
+ mtdcr(uiccr, 0x00000010);
+ mtdcr(uicpr, 0xFE7FFFF0); /* set int polarities */
+ mtdcr(uictr, 0x00000010); /* set int trigger levels */
+ mtdcr(uicsr, 0xFFFFFFFF); /* clear all ints */
+
+ return 0;
+}
+
+int misc_init_f(void)
+{
+ /* Set EPLD to take PHY out of reset */
+ out8(CPLD_BASE + 0x05, 0x00);
+ udelay(100000);
+
+ return 0;
+}
+
+/*
+ * Check Board Identity:
+ */
+int checkboard(void)
+{
+ char *s = getenv("serial#");
+
+ printf("Board: Acadia - AMCC PPC405EZ Evaluation Board");
+ if (s != NULL) {
+ puts(", serial# ");
+ puts(s);
+ }
+ putc('\n');
+
+ return (0);
+}