summaryrefslogtreecommitdiff
path: root/board/a4m072/a4m072.c
diff options
context:
space:
mode:
Diffstat (limited to 'board/a4m072/a4m072.c')
-rw-r--r--board/a4m072/a4m072.c506
1 files changed, 506 insertions, 0 deletions
diff --git a/board/a4m072/a4m072.c b/board/a4m072/a4m072.c
new file mode 100644
index 000000000..ae7ccbb4e
--- /dev/null
+++ b/board/a4m072/a4m072.c
@@ -0,0 +1,506 @@
+/*
+ * (C) Copyright 2003
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * (C) Copyright 2004
+ * Mark Jonas, Freescale Semiconductor, mark.jonas@motorola.com.
+ *
+ * (C) Copyright 2010
+ * Sergei Poselenov, Emcraft Systems, sposelenov@emcraft.com.
+ *
+ * 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 <mpc5xxx.h>
+#include <pci.h>
+#include <asm/processor.h>
+#include <asm/io.h>
+#include <libfdt.h>
+#include <netdev.h>
+#include <led-display.h>
+#include <linux/err.h>
+
+#include "mt46v32m16.h"
+
+#ifndef CONFIG_SYS_RAMBOOT
+static void sdram_start (int hi_addr)
+{
+ long hi_addr_bit = hi_addr ? 0x01000000 : 0;
+ long control = SDRAM_CONTROL | hi_addr_bit;
+
+ /* unlock mode register */
+ out_be32((void *)MPC5XXX_SDRAM_CTRL, control | 0x80000000);
+ __asm__ volatile ("sync");
+
+ /* precharge all banks */
+ out_be32((void *)MPC5XXX_SDRAM_CTRL, control | 0x80000002);
+ __asm__ volatile ("sync");
+
+#if SDRAM_DDR
+ /* set mode register: extended mode */
+ out_be32((void *)MPC5XXX_SDRAM_MODE, SDRAM_EMODE);
+ __asm__ volatile ("sync");
+
+ /* set mode register: reset DLL */
+ out_be32((void *)MPC5XXX_SDRAM_MODE, SDRAM_MODE | 0x04000000);
+ __asm__ volatile ("sync");
+#endif
+
+ /* precharge all banks */
+ out_be32((void *)MPC5XXX_SDRAM_CTRL, control | 0x80000002);
+ __asm__ volatile ("sync");
+
+ /* auto refresh */
+ out_be32((void *)MPC5XXX_SDRAM_CTRL, control | 0x80000004);
+ __asm__ volatile ("sync");
+
+ /* set mode register */
+ out_be32((void *)MPC5XXX_SDRAM_MODE, SDRAM_MODE);
+ __asm__ volatile ("sync");
+
+ /* normal operation */
+ out_be32((void *)MPC5XXX_SDRAM_CTRL, control);
+ __asm__ volatile ("sync");
+}
+#endif
+
+/*
+ * ATTENTION: Although partially referenced initdram does NOT make real use
+ * use of CONFIG_SYS_SDRAM_BASE. The code does not work if CONFIG_SYS_SDRAM_BASE
+ * is something else than 0x00000000.
+ */
+
+phys_size_t initdram (int board_type)
+{
+ ulong dramsize = 0;
+ uint svr, pvr;
+
+#ifndef CONFIG_SYS_RAMBOOT
+ ulong test1, test2;
+
+ /* setup SDRAM chip selects */
+ out_be32((void *)MPC5XXX_SDRAM_CS0CFG, 0x0000001e); /* 2GB at 0x0 */
+ out_be32((void *)MPC5XXX_SDRAM_CS1CFG, 0x80000000); /* disabled */
+ __asm__ volatile ("sync");
+
+ /* setup config registers */
+ out_be32((void *)MPC5XXX_SDRAM_CONFIG1, SDRAM_CONFIG1);
+ out_be32((void *)MPC5XXX_SDRAM_CONFIG2, SDRAM_CONFIG2);
+ __asm__ volatile ("sync");
+
+#if SDRAM_DDR
+ /* set tap delay */
+ out_be32((void *)MPC5XXX_CDM_PORCFG, SDRAM_TAPDELAY);
+ __asm__ volatile ("sync");
+#endif
+
+ /* find RAM size using SDRAM CS0 only */
+ 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) {
+ out_be32((void *)MPC5XXX_SDRAM_CS0CFG,
+ 0x13 + __builtin_ffs(dramsize >> 20) - 1);
+ } else {
+ out_be32((void *)MPC5XXX_SDRAM_CS0CFG, 0); /* disabled */
+ }
+
+#else /* CONFIG_SYS_RAMBOOT */
+
+ /* retrieve size of memory connected to SDRAM CS0 */
+ dramsize = in_be32((void *)MPC5XXX_SDRAM_CS0CFG) & 0xFF;
+ if (dramsize >= 0x13) {
+ dramsize = (1 << (dramsize - 0x13)) << 20;
+ } else {
+ dramsize = 0;
+ }
+
+#endif /* CONFIG_SYS_RAMBOOT */
+
+ /*
+ * On MPC5200B we need to set the special configuration delay in the
+ * DDR controller. Please refer to Freescale's AN3221 "MPC5200B SDRAM
+ * Initialization and Configuration", 3.3.1 SDelay--MBAR + 0x0190:
+ *
+ * "The SDelay should be written to a value of 0x00000004. It is
+ * required to account for changes caused by normal wafer processing
+ * parameters."
+ */
+ svr = get_svr();
+ pvr = get_pvr();
+ if ((SVR_MJREV(svr) >= 2) &&
+ (PVR_MAJ(pvr) == 1) && (PVR_MIN(pvr) == 4)) {
+
+ out_be32((void *)MPC5XXX_SDRAM_SDELAY, 0x04);
+ __asm__ volatile ("sync");
+ }
+
+ return dramsize;
+}
+
+int checkboard (void)
+{
+ puts ("Board: A4M072\n");
+ return 0;
+}
+
+#ifdef CONFIG_PCI
+static struct pci_controller hose;
+
+extern void pci_mpc5xxx_init(struct pci_controller *);
+
+void pci_init_board(void)
+{
+ pci_mpc5xxx_init(&hose);
+}
+#endif
+
+#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
+
+int board_eth_init(bd_t *bis)
+{
+ int rv, num_if = 0;
+
+ /* Initialize TSECs first */
+ if ((rv = cpu_eth_init(bis)) >= 0)
+ num_if += rv;
+ else
+ printf("ERROR: failed to initialize FEC.\n");
+
+ if ((rv = pci_eth_init(bis)) >= 0)
+ num_if += rv;
+ else
+ printf("ERROR: failed to initialize PCI Ethernet.\n");
+
+ return num_if;
+}
+/*
+ * Miscellaneous late-boot configurations
+ *
+ * Initialize EEPROM write-protect GPIO pin.
+ */
+int misc_init_r(void)
+{
+#if defined(CONFIG_SYS_EEPROM_WREN)
+ /* Enable GPIO pin */
+ setbits_be32((void *)MPC5XXX_WU_GPIO_ENABLE, CONFIG_SYS_EEPROM_WP);
+ /* Set direction, output */
+ setbits_be32((void *)MPC5XXX_WU_GPIO_DIR, CONFIG_SYS_EEPROM_WP);
+ /* De-assert write enable */
+ setbits_be32((void *)MPC5XXX_WU_GPIO_DATA_O, CONFIG_SYS_EEPROM_WP);
+#endif
+ return 0;
+}
+#if defined(CONFIG_SYS_EEPROM_WREN)
+/* Input: <dev_addr> I2C address of EEPROM device to enable.
+ * <state> -1: deliver current state
+ * 0: disable write
+ * 1: enable write
+ * Returns: -1: wrong device address
+ * 0: dis-/en- able done
+ * 0/1: current state if <state> was -1.
+ */
+int eeprom_write_enable (unsigned dev_addr, int state)
+{
+ if (CONFIG_SYS_I2C_EEPROM_ADDR != dev_addr) {
+ return -1;
+ } else {
+ switch (state) {
+ case 1:
+ /* Enable write access */
+ clrbits_be32((void *)MPC5XXX_WU_GPIO_DATA_O, CONFIG_SYS_EEPROM_WP);
+ state = 0;
+ break;
+ case 0:
+ /* Disable write access */
+ setbits_be32((void *)MPC5XXX_WU_GPIO_DATA_O, CONFIG_SYS_EEPROM_WP);
+ state = 0;
+ break;
+ default:
+ /* Read current status back. */
+ state = (0 == (in_be32((void *)MPC5XXX_WU_GPIO_DATA_O) &
+ CONFIG_SYS_EEPROM_WP));
+ break;
+ }
+ }
+ return state;
+}
+#endif
+
+#ifdef CONFIG_CMD_DISPLAY
+#define DISPLAY_BUF_SIZE 2
+static u8 display_buf[DISPLAY_BUF_SIZE];
+static u8 display_putc_pos;
+static u8 display_out_pos;
+
+static u8 display_dot_enable;
+
+void display_set(int cmd) {
+
+ if (cmd & DISPLAY_CLEAR) {
+ display_buf[0] = display_buf[1] = 0;
+ }
+
+ if (cmd & DISPLAY_HOME) {
+ display_putc_pos = 0;
+ }
+
+ if (cmd & DISPLAY_MARK) {
+ display_dot_enable = 1;
+ } else {
+ display_dot_enable = 0;
+ }
+}
+
+#define SEG_A (1<<0)
+#define SEG_B (1<<1)
+#define SEG_C (1<<2)
+#define SEG_D (1<<3)
+#define SEG_E (1<<4)
+#define SEG_F (1<<5)
+#define SEG_G (1<<6)
+#define SEG_P (1<<7)
+#define SEG__ 0
+
+/*
+ * +- A -+
+ * | |
+ * F B
+ * | |
+ * +- G -+
+ * | |
+ * E C
+ * | |
+ * +- D -+ P
+ *
+ * 0..9 index 0..9
+ * A..Z index 10..35
+ * - index 36
+ * _ index 37
+ */
+
+#define SYMBOL_DASH (36)
+#define SYMBOL_UNDERLINE (37)
+
+static u8 display_char2seg7_tbl[]=
+{
+ SEG_A | SEG_B | SEG_C | SEG_D | SEG_E | SEG_F, /* 0 */
+ SEG_B | SEG_C, /* 1 */
+ SEG_A | SEG_B | SEG_D | SEG_E | SEG_G, /* 2 */
+ SEG_A | SEG_B | SEG_C | SEG_D | SEG_G, /* 3 */
+ SEG_B | SEG_C | SEG_F | SEG_G, /* 4 */
+ SEG_A | SEG_C | SEG_D | SEG_F | SEG_G, /* 5 */
+ SEG_A | SEG_C | SEG_D | SEG_E | SEG_F | SEG_G, /* 6 */
+ SEG_A | SEG_B | SEG_C, /* 7 */
+ SEG_A | SEG_B | SEG_C | SEG_D | SEG_E | SEG_F | SEG_G, /* 8 */
+ SEG_A | SEG_B | SEG_C | SEG_D | SEG_F | SEG_G, /* 9 */
+ SEG_A | SEG_B | SEG_C | SEG_E | SEG_F | SEG_G, /* A */
+ SEG_C | SEG_D | SEG_E | SEG_F | SEG_G, /* b */
+ SEG_A | SEG_D | SEG_E | SEG_F, /* C */
+ SEG_B | SEG_C | SEG_D | SEG_E | SEG_G, /* d */
+ SEG_A | SEG_D | SEG_E | SEG_F | SEG_G, /* E */
+ SEG_A | SEG_E | SEG_F | SEG_G, /* F */
+ SEG_A | SEG_B | SEG_C | SEG_D | SEG_F | SEG_G, /* g */
+ SEG_B | SEG_C | SEG_E | SEG_F | SEG_G, /* H */
+ SEG_E | SEG_F, /* I */
+ SEG_B | SEG_C | SEG_D | SEG_E, /* J */
+ SEG_A, /* K - special 1 */
+ SEG_D | SEG_E | SEG_F, /* L */
+ SEG_B, /* m - special 2 */
+ SEG_C | SEG_E | SEG_G, /* n */
+ SEG_C | SEG_D | SEG_E | SEG_G, /* o */
+ SEG_A | SEG_B | SEG_E | SEG_F | SEG_G, /* P */
+ SEG_A | SEG_B | SEG_C | SEG_F | SEG_G, /* q */
+ SEG_E | SEG_G, /* r */
+ SEG_A | SEG_C | SEG_D | SEG_F | SEG_G, /* S */
+ SEG_D | SEG_E | SEG_F | SEG_G, /* t */
+ SEG_B | SEG_C | SEG_D | SEG_E | SEG_F, /* U */
+ SEG_C | SEG_D | SEG_E | SEG_F, /* V */
+ SEG_C, /* w - special 3 */
+ SEG_B | SEG_C | SEG_E | SEG_F | SEG_G, /* X */
+ SEG_B | SEG_C | SEG_D | SEG_F | SEG_G, /* Y */
+ SEG_A | SEG_B | SEG_D | SEG_E | SEG_G, /* Z */
+ SEG_G, /* - */
+ SEG_D /* _ */
+};
+
+/* Convert char to the LED segments representation */
+static u8 display_char2seg7(char c)
+{
+ u8 val = 0;
+
+ if (c >= '0' && c <= '9')
+ c -= '0';
+ else if (c >= 'a' && c <= 'z')
+ c -= 'a' - 10;
+ else if (c >= 'A' && c <= 'Z')
+ c -= 'A' - 10;
+ else if (c == '-')
+ c = SYMBOL_DASH;
+ else if ((c == '_') || (c == '.'))
+ c = SYMBOL_UNDERLINE;
+ else
+ c = ' '; /* display unsupported symbols as space */
+
+ if (c != ' ')
+ val = display_char2seg7_tbl[(int)c];
+
+ /* Handle DP LED here */
+ if (display_dot_enable) {
+ val |= SEG_P;
+ }
+
+ return val;
+}
+
+static inline int display_putc_nomark(char c)
+{
+ if (display_putc_pos >= DISPLAY_BUF_SIZE)
+ return -1;
+
+ display_buf[display_putc_pos++] = display_char2seg7(c);
+ /* one-symbol message should be steady */
+ if (display_putc_pos == 1)
+ display_buf[display_putc_pos] = display_char2seg7(c);
+
+ return c;
+}
+
+int display_putc(char c)
+{
+ /* Mark the codes from the "display" command with the DP LED */
+ display_set(DISPLAY_MARK);
+ return display_putc_nomark(c);
+}
+
+/*
+ * Flush current symbol to the LED display hardware
+ */
+static inline void display_flush(void)
+{
+ u32 val = display_buf[display_out_pos];
+
+ val |= (val << 8) | (val << 16) | (val << 24);
+ out_be32((void *)CONFIG_SYS_DISP_CHR_RAM, val);
+}
+
+/*
+ * Output contents of the software display buffer to the LED display every 0.5s
+ */
+void board_show_activity(ulong timestamp)
+{
+ static ulong last;
+ static u8 once;
+
+ if (!once || (timestamp - last >= (CONFIG_SYS_HZ / 2))) {
+ display_flush();
+ display_out_pos ^= 1;
+ last = timestamp;
+ once = 1;
+ }
+}
+
+/*
+ * Empty fake function
+ */
+void show_activity(int arg)
+{
+}
+#endif
+#if defined (CONFIG_SHOW_BOOT_PROGRESS)
+static int a4m072_status2code(int status, char *buf)
+{
+ char c = 0;
+
+ if (((status > 0) && (status <= 8)) ||
+ ((status >= 100) && (status <= 108)) ||
+ ((status < 0) && (status >= -9)) ||
+ (status == -100) || (status == -101) ||
+ ((status <= -103) && (status >= -113))) {
+ c = '5';
+ } else if (((status >= 9) && (status <= 14)) ||
+ ((status >= 120) && (status <= 123)) ||
+ ((status >= 125) && (status <= 129)) ||
+ ((status >= -13) && (status <= -10)) ||
+ (status == -120) || (status == -122) ||
+ ((status <= -124) && (status >= -127)) ||
+ (status == -129)) {
+ c = '8';
+ } else if (status == 15) {
+ c = '9';
+ } else if ((status <= -30) && (status >= -32)) {
+ c = 'A';
+ } else if (((status <= -35) && (status >= -40)) ||
+ ((status <= -42) && (status >= -51)) ||
+ ((status <= -53) && (status >= -58)) ||
+ (status == -64) ||
+ ((status <= -80) && (status >= -83)) ||
+ (status == -130) || (status == -140) ||
+ (status == -150)) {
+ c = 'B';
+ }
+
+ if (c == 0)
+ return -EINVAL;
+
+ buf[0] = (status < 0) ? '-' : c;
+ buf[1] = c;
+
+ return 0;
+}
+
+void show_boot_progress(int status)
+{
+ char buf[2];
+
+ if (a4m072_status2code(status, buf) < 0)
+ return;
+
+ display_set(0); /* Clear DP Led */
+ display_putc_nomark(buf[0]);
+ display_putc_nomark(buf[1]);
+ display_set(DISPLAY_HOME);
+ display_out_pos = 0; /* reset output position */
+
+ /* we want to flush status 15 now */
+ if (status == 15)
+ display_flush();
+}
+#endif
generated by cgit v1.2.3-70-g09d2 (git 2.51.2) at 2025-10-31 19:14:59 +0000