mpc83xx: Add support for the MPC8349E-mITX
PREREQUISITE PATCHES:
* This patch can only be applied after the following patches have been applied:
1) DNX#2006090742000024 "Add support for multiple I2C buses"
2) DNX#2006090742000033 "Multi-bus I2C implementation of MPC834x"
3) DNX#2006091242000041 "Additional MPC8349 support for multibus i2c"
4) DNX#2006091242000078 "Add support for variable flash memory sizes on 83xx systems"
5) DNX#2006091242000069 "Add support for Errata DDR6 on MPC 834x systems"
CHANGELOG:
* Add support for the Freescale MPC8349E-mITX reference design platform.
The second TSEC (Vitesse 7385 switch) is not supported at this time.
Signed-off-by: Timur Tabi <timur@freescale.com>
diff --git a/board/mpc8349itx/mpc8349itx.c b/board/mpc8349itx/mpc8349itx.c
new file mode 100644
index 0000000..9a5cbec
--- /dev/null
+++ b/board/mpc8349itx/mpc8349itx.c
@@ -0,0 +1,461 @@
+/*
+ * Copyright (C) Freescale Semiconductor, Inc. 2006. All rights reserved.
+ *
+ * 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 <ioports.h>
+#include <mpc83xx.h>
+#include <i2c.h>
+#include <spd.h>
+#include <miiphy.h>
+
+#ifdef CONFIG_PCI
+#include <asm/mpc8349_pci.h>
+#include <pci.h>
+#endif
+
+#ifdef CONFIG_SPD_EEPROM
+#include <spd_sdram.h>
+#else
+#include <asm/mmu.h>
+#endif
+
+#ifndef CONFIG_SPD_EEPROM
+/*************************************************************************
+ * fixed sdram init -- doesn't use serial presence detect.
+ ************************************************************************/
+int fixed_sdram(void)
+{
+ volatile immap_t *im = (immap_t *) CFG_IMMRBAR;
+ u32 ddr_size; /* The size of RAM, in bytes */
+ u32 ddr_size_log2 = 0;
+
+ for (ddr_size = CFG_DDR_SIZE * 0x100000; ddr_size > 1; ddr_size >>= 1) {
+ if (ddr_size & 1) {
+ return -1;
+ }
+ ddr_size_log2++;
+ }
+
+ im->sysconf.ddrlaw[0].ar =
+ LAWAR_EN | ((ddr_size_log2 - 1) & LAWAR_SIZE);
+ im->sysconf.ddrlaw[0].bar = (CFG_DDR_SDRAM_BASE >> 12) & 0xfffff;
+
+ /* Only one CS0 for DDR */
+ im->ddr.csbnds[0].csbnds = 0x0000000f;
+ im->ddr.cs_config[0] = CFG_DDR_CONFIG;
+
+ debug("cs0_bnds = 0x%08x\n", im->ddr.csbnds[0].csbnds);
+ debug("cs0_config = 0x%08x\n", im->ddr.cs_config[0]);
+
+ debug("DDR:bar=0x%08x\n", im->sysconf.ddrlaw[0].bar);
+ debug("DDR:ar=0x%08x\n", im->sysconf.ddrlaw[0].ar);
+
+ im->ddr.timing_cfg_1 = CFG_DDR_TIMING_1;
+ im->ddr.timing_cfg_2 = CFG_DDR_TIMING_2;/* Was "2 << TIMING_CFG2_WR_DATA_DELAY_SHIFT" */
+ im->ddr.sdram_cfg = SDRAM_CFG_SREN | SDRAM_CFG_SDRAM_TYPE_DDR;
+ im->ddr.sdram_mode =
+ (0x0000 << SDRAM_MODE_ESD_SHIFT) | (0x0032 << SDRAM_MODE_SD_SHIFT);
+ im->ddr.sdram_interval =
+ (0x0410 << SDRAM_INTERVAL_REFINT_SHIFT) | (0x0100 <<
+ SDRAM_INTERVAL_BSTOPRE_SHIFT);
+ im->ddr.sdram_clk_cntl =
+ DDR_SDRAM_CLK_CNTL_SS_EN | DDR_SDRAM_CLK_CNTL_CLK_ADJUST_05;
+
+ udelay(200);
+
+ im->ddr.sdram_cfg |= SDRAM_CFG_MEM_EN;
+
+ debug("DDR:timing_cfg_1=0x%08x\n", im->ddr.timing_cfg_1);
+ debug("DDR:timing_cfg_2=0x%08x\n", im->ddr.timing_cfg_2);
+ debug("DDR:sdram_mode=0x%08x\n", im->ddr.sdram_mode);
+ debug("DDR:sdram_interval=0x%08x\n", im->ddr.sdram_interval);
+ debug("DDR:sdram_cfg=0x%08x\n", im->ddr.sdram_cfg);
+
+ return CFG_DDR_SIZE;
+}
+#endif
+
+#ifdef CONFIG_PCI
+/*
+ * Initialize PCI Devices, report devices found
+ */
+#ifndef CONFIG_PCI_PNP
+static struct pci_config_table pci_mpc83xxmitx_config_table[] = {
+ {
+ PCI_ANY_ID,
+ PCI_ANY_ID,
+ PCI_ANY_ID,
+ PCI_ANY_ID,
+ 0x0f,
+ PCI_ANY_ID,
+ pci_cfgfunc_config_device,
+ {
+ PCI_ENET0_IOADDR,
+ PCI_ENET0_MEMADDR,
+ PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER}
+ },
+ {}
+}
+#endif
+
+volatile static struct pci_controller hose[] = {
+ {
+#ifndef CONFIG_PCI_PNP
+ config_table:pci_mpc83xxmitx_config_table,
+#endif
+ },
+ {
+#ifndef CONFIG_PCI_PNP
+ config_table:pci_mpc83xxmitx_config_table,
+#endif
+ }
+};
+#endif /* CONFIG_PCI */
+
+/* If MPC8349E-mITX is soldered with SDRAM, then initialize it.
+*/
+
+void sdram_init(void)
+{
+ volatile immap_t *immap = (immap_t *) CFG_IMMRBAR;
+ volatile lbus83xx_t *lbc = &immap->lbus;
+
+#if defined(CFG_BR2_PRELIM) \
+ && defined(CFG_OR2_PRELIM) \
+ && defined(CFG_LBLAWBAR2_PRELIM) \
+ && defined(CFG_LBLAWAR2_PRELIM) \
+ && !defined(CONFIG_COMPACT_FLASH)
+
+ uint *sdram_addr = (uint *) CFG_LBC_SDRAM_BASE;
+
+ puts("\n SDRAM on Local Bus: ");
+ print_size(CFG_LBC_SDRAM_SIZE * 1024 * 1024, "\n");
+
+ /*
+ * Setup SDRAM Base and Option Registers, already done in cpu_init.c
+ */
+
+ /*setup mtrpt, lsrt and lbcr for LB bus */
+ lbc->lbcr = CFG_LBC_LBCR;
+ lbc->mrtpr = CFG_LBC_MRTPR;
+ lbc->lsrt = CFG_LBC_LSRT;
+ asm("sync");
+
+ /*
+ * Configure the SDRAM controller Machine Mode register.
+ */
+ lbc->lsdmr = CFG_LBC_LSDMR_5; /* 0x40636733; normal operation */
+
+ lbc->lsdmr = CFG_LBC_LSDMR_1; /*0x68636733; precharge all the banks */
+ asm("sync");
+ *sdram_addr = 0xff;
+ udelay(100);
+
+ lbc->lsdmr = CFG_LBC_LSDMR_2; /*0x48636733; auto refresh */
+ asm("sync");
+ *sdram_addr = 0xff; /*1 time*/
+ udelay(100);
+ *sdram_addr = 0xff; /*2 times*/
+ udelay(100);
+ *sdram_addr = 0xff; /*3 times*/
+ udelay(100);
+ *sdram_addr = 0xff; /*4 times*/
+ udelay(100);
+ *sdram_addr = 0xff; /*5 times*/
+ udelay(100);
+ *sdram_addr = 0xff; /*6 times*/
+ udelay(100);
+ *sdram_addr = 0xff; /*7 times*/
+ udelay(100);
+ *sdram_addr = 0xff; /*8 times*/
+ udelay(100);
+
+ lbc->lsdmr = CFG_LBC_LSDMR_4; /*0x58636733;mode register write operation */
+ asm("sync");
+ *sdram_addr = 0xff;
+ udelay(100);
+
+ lbc->lsdmr = CFG_LBC_LSDMR_5; /*0x40636733;normal operation */
+ asm("sync");
+ *sdram_addr = 0xff;
+ udelay(100);
+
+#else
+ puts("SDRAM on Local Bus is NOT available!\n");
+
+#ifdef CFG_BR2_PRELIM
+ lbc->bank[2].br = CFG_BR2_PRELIM;
+ lbc->bank[2].or = CFG_OR2_PRELIM;
+#endif
+
+#ifdef CFG_BR3_PRELIM
+ lbc->bank[3].br = CFG_BR3_PRELIM;
+ lbc->bank[3].or = CFG_OR3_PRELIM;
+#endif
+#endif
+}
+
+long int initdram(int board_type)
+{
+ volatile immap_t *im = (immap_t *) CFG_IMMRBAR;
+ u32 msize = 0;
+#ifdef CONFIG_DDR_ECC
+ volatile ddr83xx_t *ddr = &im->ddr;
+#endif
+
+ if ((im->sysconf.immrbar & IMMRBAR_BASE_ADDR) != (u32) im)
+ return -1;
+
+ /* DDR SDRAM - Main SODIMM */
+ im->sysconf.ddrlaw[0].bar = CFG_DDR_BASE & LAWBAR_BAR;
+#ifdef CONFIG_SPD_EEPROM
+ msize = spd_sdram();
+#else
+ msize = fixed_sdram();
+#endif
+
+#ifdef CONFIG_DDR_ECC
+ if (ddr->sdram_cfg & SDRAM_CFG_ECC_EN)
+ /* Unlike every other board, on the 83xx spd_sdram() returns
+ megabytes instead of just bytes. That's why we need to
+ multiple by 1MB when calling ddr_enable_ecc(). */
+ ddr_enable_ecc(msize * 1048576);
+#endif
+
+ /*
+ * Initialize SDRAM if it is on local bus.
+ */
+ sdram_init();
+ puts(" DDR RAM: ");
+ /* return total bus SDRAM size(bytes) -- DDR */
+ return msize * 1024 * 1024;
+}
+
+int checkboard(void)
+{
+#ifdef CONFIG_HARD_I2C
+ u8 i2c_data;
+#endif
+
+ puts("Board: Freescale MPC8349E-mITX");
+
+#ifdef CONFIG_HARD_I2C
+ i2c_set_bus_num(I2C_BUS_2);
+ if (i2c_read(CFG_I2C_8574A_ADDR2, 0, 0, &i2c_data, sizeof(i2c_data)) ==
+ 0)
+ printf(" %u.%u (PCF8475A)", (i2c_data & 0x02) >> 1,
+ i2c_data & 0x01);
+ else if (i2c_read(CFG_I2C_8574_ADDR2, 0, 0, &i2c_data, sizeof(i2c_data))
+ == 0)
+ printf(" %u.%u (PCF8475)", (i2c_data & 0x02) >> 1,
+ i2c_data & 0x01);
+ else
+ printf(" ?.?");
+#endif
+
+ puts("\n");
+
+ return 0;
+}
+
+/**
+ * Implement a work-around for a hardware problem with compact
+ * flash.
+ *
+ * Program the UPM if compact flash is enabled.
+ */
+int misc_init_f(void)
+{
+ volatile u32 *vsc7385_cpuctrl;
+
+ /* 0x1c0c0 is the VSC7385 CPU Control (CPUCTRL) Register. The power up
+ default of VSC7385 L1_IRQ and L2_IRQ requests are active high. That
+ means it is 0 when the IRQ is not active. This makes the wire-AND
+ logic always assert IRQ7 to CPU even if there is no request from the
+ switch. Since the compact flash and the switch share the same IRQ,
+ the Linux kernel will think that the compact flash is requesting irq
+ and get stuck when it tries to clear the IRQ. Thus we need to set
+ the L2_IRQ0 and L2_IRQ1 to active low.
+
+ The following code sets the L1_IRQ and L2_IRQ polarity to active low.
+ Without this code, compact flash will not work in Linux because
+ unlike U-Boot, Linux uses the IRQ, so this code is necessary if we
+ don't enable compact flash for U-Boot.
+ */
+
+ vsc7385_cpuctrl = (volatile u32 *)(CFG_VSC7385_BASE + 0x1c0c0);
+ *vsc7385_cpuctrl |= 0x0c;
+
+#ifdef CONFIG_COMPACT_FLASH
+ /* UPM Table Configuration Code */
+ static uint UPMATable[] = {
+ 0xcffffc00, 0x0fffff00, 0x0fafff00, 0x0fafff00,
+ 0x0faffd00, 0x0faffc04, 0x0ffffc00, 0x3ffffc01,
+ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00,
+ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00,
+ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfff7fc00,
+ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc01,
+ 0xcffffc00, 0x0fffff00, 0x0ff3ff00, 0x0ff3ff00,
+ 0x0ff3fe00, 0x0ffffc00, 0x3ffffc05, 0xfffffc00,
+ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00,
+ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00,
+ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00,
+ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc01,
+ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00,
+ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00,
+ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc01,
+ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc01
+ };
+ volatile immap_t *immap = (immap_t *) CFG_IMMRBAR;
+ volatile lbus83xx_t *lbus = &immap->lbus;
+
+ lbus->bank[3].br = CFG_BR3_PRELIM;
+ lbus->bank[3].or = CFG_OR3_PRELIM;
+
+ /* Program the MAMR. RFEN=0, OP=00, UWPL=1, AM=000, DS=01, G0CL=000,
+ GPL4=0, RLF=0001, WLF=0001, TLF=0001, MAD=000000
+ */
+ lbus->mamr = 0x08404440;
+
+ upmconfig(0, UPMATable, sizeof(UPMATable) / sizeof(UPMATable[0]));
+
+ puts("UPMA: Configured for compact flash\n");
+#endif
+
+ return 0;
+}
+
+/**
+ * Make sure the EEPROM has the HRCW correctly programmed.
+ * Make sure the RTC is correctly programmed.
+ *
+ * The MPC8349E-mITX can be configured to load the HRCW from
+ * EEPROM instead of flash. This is controlled via jumpers
+ * LGPL0, 1, and 3. Normally, these jumpers are set to 000 (all
+ * jumpered), but if they're set to 001 or 010, then the HRCW is
+ * read from the "I2C EEPROM".
+ *
+ * This function makes sure that the I2C EEPROM is programmed
+ * correctly.
+ */
+int misc_init_r(void)
+{
+ int rc = 0;
+
+#ifdef CONFIG_HARD_I2C
+
+ uchar orig_bus = i2c_get_bus_num();;
+
+#ifdef CFG_I2C_RTC_ADDR
+ char ds1339_data[17];
+#endif
+
+#ifdef CFG_I2C_EEPROM_ADDR
+ static u8 eeprom_data[] = /* HRCW data */
+ {
+ 0xaa, 0x55, 0xaa,
+ 0x7c, 0x02, 0x40, 0x05, 0x04, 0x00, 0x00,
+ 0x7c, 0x02, 0x41, 0xb4, 0x60, 0xa0, 0x00,
+ };
+
+ u8 data[sizeof(eeprom_data)];
+
+ i2c_set_bus_num(I2C_BUS_1);
+
+ if (i2c_read(CFG_I2C_EEPROM_ADDR, 0, 2, data, sizeof(data)) == 0) {
+ if (memcmp(data, eeprom_data, sizeof(data)) != 0) {
+ if (i2c_write
+ (CFG_I2C_EEPROM_ADDR, 0, 2, eeprom_data,
+ sizeof(eeprom_data)) != 0) {
+ puts("Failure writing the HRCW to EEPROM via I2C.\n");
+ rc = 1;
+ }
+ }
+ } else {
+ puts("Failure reading the HRCW from EEPROM via I2C.\n");
+ rc = 1;
+ }
+#endif
+
+#ifdef CFG_I2C_RTC_ADDR
+ i2c_set_bus_num(I2C_BUS_2);
+
+ if (i2c_read(CFG_I2C_RTC_ADDR, 0, 1, ds1339_data, sizeof(ds1339_data))
+ == 0) {
+
+ /* Work-around for MPC8349E-mITX bug #13601.
+ If the RTC does not contain valid register values, the DS1339
+ Linux driver will not work.
+ */
+
+ /* Make sure status register bits 6-2 are zero */
+ ds1339_data[0x0f] &= ~0x7c;
+
+ /* Check for a valid day register value */
+ ds1339_data[0x03] &= ~0xf8;
+ if (ds1339_data[0x03] == 0) {
+ ds1339_data[0x03] = 1;
+ }
+
+ /* Check for a valid date register value */
+ ds1339_data[0x04] &= ~0xc0;
+ if ((ds1339_data[0x04] == 0) ||
+ ((ds1339_data[0x04] & 0x0f) > 9) ||
+ (ds1339_data[0x04] >= 0x32)) {
+ ds1339_data[0x04] = 1;
+ }
+
+ /* Check for a valid month register value */
+ ds1339_data[0x05] &= ~0x60;
+
+ if ((ds1339_data[0x05] == 0) ||
+ ((ds1339_data[0x05] & 0x0f) > 9) ||
+ ((ds1339_data[0x05] >= 0x13)
+ && (ds1339_data[0x05] <= 0x19))) {
+ ds1339_data[0x05] = 1;
+ }
+
+ /* Enable Oscillator and rate select */
+ ds1339_data[0x0e] = 0x1c;
+
+ /* Work-around for MPC8349E-mITX bug #13330.
+ Ensure that the RTC control register contains the value 0x1c.
+ This affects SATA performance.
+ */
+
+ if (i2c_write
+ (CFG_I2C_RTC_ADDR, 0, 1, ds1339_data,
+ sizeof(ds1339_data))) {
+ puts("Failure writing to the RTC via I2C.\n");
+ rc = 1;
+ }
+ } else {
+ puts("Failure reading from the RTC via I2C.\n");
+ rc = 1;
+ }
+#endif
+
+ i2c_set_bus_num(orig_bus);
+#endif
+
+ return rc;
+}