--- /dev/null
+/*
+ * (C) Copyright 2003-2007
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * modified for Promess PRO - by Andy Joseph, andy@promessdev.com
+ * modified for Promess PRO-Motion - by Robert McCullough, rob@promessdev.com
+ * modified by Chris M. Tumas 6/20/06 Change CAS latency to 2 from 3
+ * Also changed the refresh for 100MHz operation
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <mpc5xxx.h>
+#include <miiphy.h>
+#include <libfdt.h>
+
+#if defined(CONFIG_STATUS_LED)
+#include <status_led.h>
+#endif /* CONFIG_STATUS_LED */
+
+/* Kollmorgen DPR initialization data */
+struct init_elem {
+ unsigned long addr;
+ unsigned len;
+ char *data;
+ } init_seq[] = {
+ {0x500003F2, 2, "\x86\x00"}, /* HW parameter */
+ {0x500003F0, 2, "\x00\x00"},
+ {0x500003EC, 4, "\x00\x80\xc1\x52"}, /* Magic word */
+ };
+
+/*
+ * Initialize Kollmorgen DPR
+ */
+static void kollmorgen_init(void)
+{
+ unsigned i, j;
+ vu_char *p;
+
+ for (i = 0; i < sizeof(init_seq) / sizeof(struct init_elem); ++i) {
+ p = (vu_char *)init_seq[i].addr;
+ for (j = 0; j < init_seq[i].len; ++j)
+ *(p + j) = *(init_seq[i].data + j);
+ }
+
+ printf("DPR: Kollmorgen DPR initialized\n");
+}
+
+
+/*
+ * Early board initalization.
+ */
+int board_early_init_r(void)
+{
+ /* Now, when we are in RAM, disable Boot Chipselect and enable CS0 */
+ *(vu_long *)MPC5XXX_ADDECR &= ~(1 << 25);
+ *(vu_long *)MPC5XXX_ADDECR |= (1 << 16);
+
+ /* Initialize Kollmorgen DPR */
+ kollmorgen_init();
+
+ return 0;
+}
+
+
+/*
+ * Additional PHY intialization. After being reset in mpc5xxx_fec_init_phy(),
+ * PHY goes into FX mode. To take it out of the FX mode and switch into
+ * desired TX operation, one needs to clear the FX_SEL bit of Mode Control
+ * Register.
+ */
+void reset_phy(void)
+{
+ unsigned short mode_control;
+
+ miiphy_read("FEC", CONFIG_PHY_ADDR, 0x15, &mode_control);
+ miiphy_write("FEC", CONFIG_PHY_ADDR, 0x15,
+ mode_control & 0xfffe);
+ return;
+}
+
+#ifndef CONFIG_SYS_RAMBOOT
+/*
+ * Helper function to initialize SDRAM controller.
+ */
+static void sdram_start(int hi_addr)
+{
+ long hi_addr_bit = hi_addr ? 0x01000000 : 0;
+
+ /* unlock mode register */
+ *(vu_long *)MPC5XXX_SDRAM_CTRL = SDRAM_CONTROL | 0x80000000 |
+ hi_addr_bit;
+
+ /* precharge all banks */
+ *(vu_long *)MPC5XXX_SDRAM_CTRL = SDRAM_CONTROL | 0x80000002 |
+ hi_addr_bit;
+
+ /* auto refresh */
+ *(vu_long *)MPC5XXX_SDRAM_CTRL = SDRAM_CONTROL | 0x80000004 |
+ hi_addr_bit;
+
+ /* auto refresh, second time */
+ *(vu_long *)MPC5XXX_SDRAM_CTRL = SDRAM_CONTROL | 0x80000004 |
+ hi_addr_bit;
+
+ /* set mode register */
+ *(vu_long *)MPC5XXX_SDRAM_MODE = SDRAM_MODE;
+
+ /* normal operation */
+ *(vu_long *)MPC5XXX_SDRAM_CTRL = SDRAM_CONTROL | hi_addr_bit;
+}
+#endif /* !CONFIG_SYS_RAMBOOT */
+
+
+/*
+ * Initalize SDRAM - configure SDRAM controller, detect memory size.
+ */
+phys_size_t initdram(int board_type)
+{
+ ulong dramsize = 0;
+#ifndef CONFIG_SYS_RAMBOOT
+ ulong test1, test2;
+
+ /* According to AN3221 (MPC5200B SDRAM Initialization and
+ * Configuration), the SDelay register must be written a value of
+ * 0x00000004 as the first step of the SDRAM contorller configuration.
+ */
+ *(vu_long *)MPC5XXX_SDRAM_SDELAY = 0x04;
+
+ /* configure SDRAM start/end for detection */
+ *(vu_long *)MPC5XXX_SDRAM_CS0CFG = 0x0000001e; /* 2G at 0x0 */
+ *(vu_long *)MPC5XXX_SDRAM_CS1CFG = 0x80000000; /* disabled */
+
+ /* setup config registers */
+ *(vu_long *)MPC5XXX_SDRAM_CONFIG1 = SDRAM_CONFIG1;
+ *(vu_long *)MPC5XXX_SDRAM_CONFIG2 = SDRAM_CONFIG2;
+
+ sdram_start(0);
+ test1 = get_ram_size((long *)CONFIG_SYS_SDRAM_BASE, 0x80000000);
+ sdram_start(1);
+ test2 = get_ram_size((long *)CONFIG_SYS_SDRAM_BASE, 0x80000000);
+ if (test1 > test2) {
+ sdram_start(0);
+ dramsize = test1;
+ } else {
+ dramsize = test2;
+ }
+
+ /* memory smaller than 1MB is impossible */
+ if (dramsize < (1 << 20))
+ dramsize = 0;
+
+ /* set SDRAM CS0 size according to the amount of RAM found */
+ if (dramsize > 0) {
+ *(vu_long *)MPC5XXX_SDRAM_CS0CFG = 0x13 +
+ __builtin_ffs(dramsize >> 20) - 1;
+ } else {
+ *(vu_long *)MPC5XXX_SDRAM_CS0CFG = 0; /* disabled */
+ }
+
+ /* let SDRAM CS1 start right after CS0 and disable it */
+ *(vu_long *) MPC5XXX_SDRAM_CS1CFG = dramsize;
+
+#else /* !CONFIG_SYS_RAMBOOT */
+ /* retrieve size of memory connected to SDRAM CS0 */
+ dramsize = *(vu_long *)MPC5XXX_SDRAM_CS0CFG & 0xFF;
+ if (dramsize >= 0x13)
+ dramsize = (1 << (dramsize - 0x13)) << 20;
+ else
+ dramsize = 0;
+#endif /* CONFIG_SYS_RAMBOOT */
+
+ /* return total ram size */
+ return dramsize;
+}
+
+
+int checkboard(void)
+{
+ uchar rev = *(vu_char *)CPLD_REV_REGISTER;
+ printf("Board: Promess Motion-PRO board (CPLD rev. 0x%02x)\n", rev);
+ return 0;
+}
+
+
+#if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP)
+void ft_board_setup(void *blob, bd_t *bd)
+{
+ ft_cpu_setup(blob, bd);
+}
+#endif /* defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP) */
+
+
+#if defined(CONFIG_STATUS_LED)
+void __led_init(led_id_t regaddr, int state)
+{
+ *((vu_long *) regaddr) |= ENABLE_GPIO_OUT;
+
+ if (state == STATUS_LED_ON)
+ *((vu_long *) regaddr) |= LED_ON;
+ else
+ *((vu_long *) regaddr) &= ~LED_ON;
+}
+
+void __led_set(led_id_t regaddr, int state)
+{
+ if (state == STATUS_LED_ON)
+ *((vu_long *) regaddr) |= LED_ON;
+ else
+ *((vu_long *) regaddr) &= ~LED_ON;
+}
+
+void __led_toggle(led_id_t regaddr)
+{
+ *((vu_long *) regaddr) ^= LED_ON;
+}
+#endif /* CONFIG_STATUS_LED */
Code Review / kvmfornfv.git / blobdiff