Patches by Jon Loeliger, 24 Aug 2004:
- Add support for the MPC8541 and MPC8555 CDS boards
- Cleanup eth?addr handling: make dependent on CONFIG_ETH?ADDR
diff --git a/board/cds/mpc8555cds/mpc8555cds.c b/board/cds/mpc8555cds/mpc8555cds.c
new file mode 100644
index 0000000..e4f9d65
--- /dev/null
+++ b/board/cds/mpc8555cds/mpc8555cds.c
@@ -0,0 +1,371 @@
+/*
+ * Copyright 2004 Freescale Semiconductor.
+ *
+ * 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 <pci.h>
+#include <asm/processor.h>
+#include <asm/immap_85xx.h>
+#include <spd.h>
+
+#include "../common/cadmus.h"
+#include "../common/eeprom.h"
+
+#if defined(CONFIG_DDR_ECC)
+extern void ddr_enable_ecc(unsigned int dram_size);
+#endif
+
+extern long int spd_sdram(void);
+
+void local_bus_init(void);
+void sdram_init(void);
+
+
+
+int
+board_early_init_f(void)
+{
+ return 0;
+}
+
+
+int
+checkboard(void)
+{
+ volatile immap_t *immap = (immap_t *)CFG_CCSRBAR;
+ volatile ccsr_gur_t *gur = &immap->im_gur;
+
+ /* PCI slot in USER bits CSR[6:7] by convention. */
+ uint pci_slot = get_pci_slot();
+
+ uint pci_dual = get_pci_dual(); /* PCI DUAL in CM_PCI[3] */
+ uint pci1_32 = gur->pordevsr & 0x10000; /* PORDEVSR[15] */
+ uint pci1_clk_sel = gur->porpllsr & 0x8000; /* PORPLLSR[16] */
+ uint pci2_clk_sel = gur->porpllsr & 0x4000; /* PORPLLSR[17] */
+
+ uint pci1_speed = get_clock_freq(); /* PCI PSPEED in [4:5] */
+
+ uint cpu_board_rev = get_cpu_board_revision();
+
+ printf("Board: CDS Version 0x%02x, PCI Slot %d\n",
+ get_board_version(),
+ pci_slot);
+
+ printf("CPU Board Revision %d.%d (0x%04x)\n",
+ MPC85XX_CPU_BOARD_MAJOR(cpu_board_rev),
+ MPC85XX_CPU_BOARD_MINOR(cpu_board_rev),
+ cpu_board_rev);
+
+ printf(" PCI1: %d bit, %s MHz, %s\n",
+ (pci1_32) ? 32 : 64,
+ (pci1_speed == 33000000) ? "33" :
+ (pci1_speed == 66000000) ? "66" : "unknown",
+ pci1_clk_sel ? "sync" : "async"
+ );
+
+ if (pci_dual) {
+ printf(" PCI2: 32 bit, 66 MHz, %s\n",
+ pci2_clk_sel ? "sync" : "async"
+ );
+ } else {
+ printf(" PCI2: disabled\n");
+ }
+
+ /*
+ * Initialize local bus.
+ */
+ local_bus_init();
+
+ return 0;
+}
+
+
+long int
+initdram(int board_type)
+{
+ long dram_size = 0;
+ volatile immap_t *immap = (immap_t *)CFG_IMMR;
+
+ puts("Initializing\n");
+
+#if defined(CONFIG_DDR_DLL)
+ {
+ /*
+ * Work around to stabilize DDR DLL MSYNC_IN.
+ * Errata DDR9 seems to have been fixed.
+ * This is now the workaround for Errata DDR11:
+ * Override DLL = 1, Course Adj = 1, Tap Select = 0
+ */
+
+ volatile ccsr_gur_t *gur= &immap->im_gur;
+
+ gur->ddrdllcr = 0x81000000;
+ asm("sync;isync;msync");
+ udelay(200);
+ }
+#endif
+
+ dram_size = spd_sdram();
+
+
+#if defined(CONFIG_DDR_ECC)
+ /*
+ * Initialize and enable DDR ECC.
+ */
+ ddr_enable_ecc(dram_size);
+#endif
+
+
+ /*
+ * SDRAM Initialization
+ */
+ sdram_init();
+
+ puts(" DDR: ");
+ return dram_size;
+}
+
+
+/*
+ * Initialize Local Bus
+ */
+
+void
+local_bus_init(void)
+{
+ volatile immap_t *immap = (immap_t *)CFG_IMMR;
+ volatile ccsr_gur_t *gur = &immap->im_gur;
+ volatile ccsr_lbc_t *lbc = &immap->im_lbc;
+
+ uint clkdiv;
+ uint lbc_hz;
+ sys_info_t sysinfo;
+ uint temp_lbcdll;
+
+ /*
+ * Errata LBC11.
+ * Fix Local Bus clock glitch when DLL is enabled.
+ *
+ * If localbus freq is < 66Mhz, DLL bypass mode must be used.
+ * If localbus freq is > 133Mhz, DLL can be safely enabled.
+ * Between 66 and 133, the DLL is enabled with an override workaround.
+ */
+
+ get_sys_info(&sysinfo);
+ clkdiv = lbc->lcrr & 0x0f;
+ lbc_hz = sysinfo.freqSystemBus / 1000000 / clkdiv;
+
+ if (lbc_hz < 66) {
+ lbc->lcrr |= 0x80000000; /* DLL Bypass */
+
+ } else if (lbc_hz >= 133) {
+ lbc->lcrr &= (~0x80000000); /* DLL Enabled */
+
+ } else {
+ lbc->lcrr &= (~0x8000000); /* DLL Enabled */
+ udelay(200);
+
+ /*
+ * Sample LBC DLL ctrl reg, upshift it to set the
+ * override bits.
+ */
+ temp_lbcdll = gur->lbcdllcr;
+ gur->lbcdllcr = (((temp_lbcdll & 0xff) << 16) | 0x80000000);
+ asm("sync;isync;msync");
+ }
+}
+
+
+/*
+ * Initialize SDRAM memory on the Local Bus.
+ */
+
+void
+sdram_init(void)
+{
+#if defined(CFG_OR2_PRELIM) && defined(CFG_BR2_PRELIM)
+
+ uint idx;
+ volatile immap_t *immap = (immap_t *)CFG_IMMR;
+ volatile ccsr_lbc_t *lbc = &immap->im_lbc;
+ uint *sdram_addr = (uint *)CFG_LBC_SDRAM_BASE;
+ uint cpu_board_rev;
+ uint lsdmr_common;
+
+ puts(" SDRAM: ");
+
+ print_size (CFG_LBC_SDRAM_SIZE * 1024 * 1024, "\n");
+
+ /*
+ * Setup SDRAM Base and Option Registers
+ */
+ lbc->or2 = CFG_OR2_PRELIM;
+ asm("msync");
+
+ lbc->br2 = CFG_BR2_PRELIM;
+ asm("msync");
+
+ lbc->lbcr = CFG_LBC_LBCR;
+ asm("msync");
+
+
+ lbc->lsrt = CFG_LBC_LSRT;
+ lbc->mrtpr = CFG_LBC_MRTPR;
+ asm("msync");
+
+ /*
+ * Determine which address lines to use baed on CPU board rev.
+ */
+ cpu_board_rev = get_cpu_board_revision();
+ lsdmr_common = CFG_LBC_LSDMR_COMMON;
+ if (cpu_board_rev == MPC85XX_CPU_BOARD_REV_1_0) {
+ lsdmr_common |= CFG_LBC_LSDMR_BSMA1617;
+ } else if (cpu_board_rev == MPC85XX_CPU_BOARD_REV_1_1) {
+ lsdmr_common |= CFG_LBC_LSDMR_BSMA1516;
+ } else {
+ /*
+ * Assume something unable to identify itself is
+ * really old, and likely has lines 16/17 mapped.
+ */
+ lsdmr_common |= CFG_LBC_LSDMR_BSMA1617;
+ }
+
+ /*
+ * Issue PRECHARGE ALL command.
+ */
+ lbc->lsdmr = lsdmr_common | CFG_LBC_LSDMR_OP_PCHALL;
+ asm("sync;msync");
+ *sdram_addr = 0xff;
+ ppcDcbf((unsigned long) sdram_addr);
+ udelay(100);
+
+ /*
+ * Issue 8 AUTO REFRESH commands.
+ */
+ for (idx = 0; idx < 8; idx++) {
+ lbc->lsdmr = lsdmr_common | CFG_LBC_LSDMR_OP_ARFRSH;
+ asm("sync;msync");
+ *sdram_addr = 0xff;
+ ppcDcbf((unsigned long) sdram_addr);
+ udelay(100);
+ }
+
+ /*
+ * Issue 8 MODE-set command.
+ */
+ lbc->lsdmr = lsdmr_common | CFG_LBC_LSDMR_OP_MRW;
+ asm("sync;msync");
+ *sdram_addr = 0xff;
+ ppcDcbf((unsigned long) sdram_addr);
+ udelay(100);
+
+ /*
+ * Issue NORMAL OP command.
+ */
+ lbc->lsdmr = lsdmr_common | CFG_LBC_LSDMR_OP_NORMAL;
+ asm("sync;msync");
+ *sdram_addr = 0xff;
+ ppcDcbf((unsigned long) sdram_addr);
+ udelay(200); /* Overkill. Must wait > 200 bus cycles */
+
+#endif /* enable SDRAM init */
+}
+
+
+#if defined(CFG_DRAM_TEST)
+int
+testdram(void)
+{
+ uint *pstart = (uint *) CFG_MEMTEST_START;
+ uint *pend = (uint *) CFG_MEMTEST_END;
+ uint *p;
+
+ printf("Testing DRAM from 0x%08x to 0x%08x\n",
+ CFG_MEMTEST_START,
+ CFG_MEMTEST_END);
+
+ printf("DRAM test phase 1:\n");
+ for (p = pstart; p < pend; p++)
+ *p = 0xaaaaaaaa;
+
+ for (p = pstart; p < pend; p++) {
+ if (*p != 0xaaaaaaaa) {
+ printf ("DRAM test fails at: %08x\n", (uint) p);
+ return 1;
+ }
+ }
+
+ printf("DRAM test phase 2:\n");
+ for (p = pstart; p < pend; p++)
+ *p = 0x55555555;
+
+ for (p = pstart; p < pend; p++) {
+ if (*p != 0x55555555) {
+ printf ("DRAM test fails at: %08x\n", (uint) p);
+ return 1;
+ }
+ }
+
+ printf("DRAM test passed.\n");
+ return 0;
+}
+#endif
+
+
+
+#if defined(CONFIG_PCI)
+
+/*
+ * Initialize PCI Devices, report devices found.
+ */
+
+#ifndef CONFIG_PCI_PNP
+static struct pci_config_table pci_mpc85xxcds_config_table[] = {
+ { PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
+ PCI_IDSEL_NUMBER, PCI_ANY_ID,
+ pci_cfgfunc_config_device, { PCI_ENET0_IOADDR,
+ PCI_ENET0_MEMADDR,
+ PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER
+ } },
+ { }
+};
+#endif
+
+
+static struct pci_controller hose = {
+#ifndef CONFIG_PCI_PNP
+ config_table: pci_mpc85xxcds_config_table,
+#endif
+};
+
+#endif /* CONFIG_PCI */
+
+
+void
+pci_init_board(void)
+{
+#ifdef CONFIG_PCI
+ extern void pci_mpc85xx_init(struct pci_controller *hose);
+
+ pci_mpc85xx_init(&hose);
+#endif
+}