--- /dev/null
+/*
+ * (C) Copyright 2003-2004
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * (C) Copyright 2004
+ * Mark Jonas, Freescale Semiconductor, mark.jonas@motorola.com.
+ *
+ * (C) Copyright 2006
+ * MicroSys GmbH
+ *
+ * Copyright 2012-2013 Stefan Roese <sr@denx.de>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <command.h>
+#include <mpc5xxx.h>
+#include <pci.h>
+#include <miiphy.h>
+#include <linux/compiler.h>
+#include <asm/processor.h>
+#include <asm/io.h>
+
+#ifdef CONFIG_A4M2K
+#include "is46r16320d.h"
+#else
+#include "mt46v16m16-75.h"
+#endif
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#if !defined(CONFIG_SYS_RAMBOOT) && \
+ (defined(CONFIG_SPL) && defined(CONFIG_SPL_BUILD))
+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);
+
+ /* precharge all banks */
+ out_be32((void *)MPC5XXX_SDRAM_CTRL, control | 0x80000002);
+
+#ifdef SDRAM_DDR
+ /* set mode register: extended mode */
+ out_be32((void *)MPC5XXX_SDRAM_MODE, SDRAM_EMODE);
+
+ /* set mode register: reset DLL */
+ out_be32((void *)MPC5XXX_SDRAM_MODE, SDRAM_MODE | 0x04000000);
+#endif
+
+ /* precharge all banks */
+ out_be32((void *)MPC5XXX_SDRAM_CTRL, control | 0x80000002);
+
+ /* auto refresh */
+ out_be32((void *)MPC5XXX_SDRAM_CTRL, control | 0x80000004);
+
+ /* set mode register */
+ out_be32((void *)MPC5XXX_SDRAM_MODE, SDRAM_MODE);
+
+ /* normal operation */
+ out_be32((void *)MPC5XXX_SDRAM_CTRL, control);
+
+ /*
+ * Wait a short while for the DLL to lock before accessing
+ * the SDRAM
+ */
+ udelay(100);
+}
+#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;
+ ulong dramsize2 = 0;
+ uint svr, pvr;
+#if !defined(CONFIG_SYS_RAMBOOT) && \
+ (defined(CONFIG_SPL) && defined(CONFIG_SPL_BUILD))
+ 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 */
+
+ /* setup config registers */
+ out_be32((void *)MPC5XXX_SDRAM_CONFIG1, SDRAM_CONFIG1);
+ out_be32((void *)MPC5XXX_SDRAM_CONFIG2, SDRAM_CONFIG2);
+
+#ifdef SDRAM_DDR
+ /* set tap delay */
+ out_be32((void *)MPC5XXX_CDM_PORCFG, SDRAM_TAPDELAY);
+#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;
+
+ /* retrieve size of memory connected to SDRAM CS1 */
+ dramsize2 = in_be32((void *)MPC5XXX_SDRAM_CS1CFG) & 0xFF;
+ if (dramsize2 >= 0x13)
+ dramsize2 = (1 << (dramsize2 - 0x13)) << 20;
+ else
+ dramsize2 = 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);
+
+ return dramsize + dramsize2;
+}
+
+static void get_revisions(int *failsavelevel, int *digiboardversion,
+ int *fpgaversion)
+{
+ struct mpc5xxx_gpt_0_7 *gpt = (struct mpc5xxx_gpt_0_7 *)MPC5XXX_GPT;
+ u8 val;
+
+ /* read digitalboard-version from TMR[2..4] */
+ val = 0;
+ val |= (gpt->gpt2.sr & (1 << (31 - 23))) ? (1) : 0;
+ val |= (gpt->gpt3.sr & (1 << (31 - 23))) ? (1 << 1) : 0;
+ val |= (gpt->gpt4.sr & (1 << (31 - 23))) ? (1 << 2) : 0;
+ *digiboardversion = val;
+
+ /*
+ * A4M2K only supports digiboardversion. No failsavelevel and
+ * fpgaversion here.
+ */
+#if !defined(CONFIG_A4M2K)
+ /*
+ * Figure out failsavelevel
+ * see ticket dsvk#59
+ */
+ *failsavelevel = 0; /* 0=failsave, 1=board ok, 2=fpga ok */
+
+ if (*digiboardversion == 0) {
+ *failsavelevel = 1; /* digiboard-version ok */
+
+ /* read fpga-version from TMR[5..7] */
+ val = 0;
+ val |= (gpt->gpt5.sr & (1 << (31 - 23))) ? (1) : 0;
+ val |= (gpt->gpt6.sr & (1 << (31 - 23))) ? (1 << 1) : 0;
+ val |= (gpt->gpt7.sr & (1 << (31 - 23))) ? (1 << 2) : 0;
+ *fpgaversion = val;
+
+ if (*fpgaversion == 1)
+ *failsavelevel = 2; /* fpga-version ok */
+ }
+#endif
+}
+
+/*
+ * This function is called from the SPL U-Boot version for
+ * early init stuff, that needs to be done for OS (e.g. Linux)
+ * booting. Doing it later in the real U-Boot would not work
+ * in case that the SPL U-Boot boots Linux directly.
+ */
+void spl_board_init(void)
+{
+ struct mpc5xxx_gpio *gpio = (struct mpc5xxx_gpio *)MPC5XXX_GPIO;
+ struct mpc5xxx_mmap_ctl *mm =
+ (struct mpc5xxx_mmap_ctl *)CONFIG_SYS_MBAR;
+
+#if defined(CONFIG_A4M2K)
+ /* enable CS3 and CS5 (FPGA) */
+ setbits_be32(&mm->ipbi_ws_ctrl, (1 << 19) | (1 << 21));
+#else
+ int digiboardversion;
+ int failsavelevel;
+ int fpgaversion;
+ u32 val;
+
+ get_revisions(&failsavelevel, &digiboardversion, &fpgaversion);
+
+ val = in_be32(&mm->ipbi_ws_ctrl);
+
+ /* first clear bits 19..21 (CS3...5) */
+ val &= ~((1 << 19) | (1 << 20) | (1 << 21));
+ if (failsavelevel == 2) {
+ /* FPGA ok */
+ val |= (1 << 19) | (1 << 21);
+ }
+
+ if (failsavelevel >= 1) {
+ /* at least digiboard-version ok */
+ val |= (1 << 20);
+ }
+
+ /* And write new value back to register */
+ out_be32(&mm->ipbi_ws_ctrl, val);
+
+
+ /* Setup pin multiplexing */
+ if (failsavelevel == 2) {
+ /* fpga-version ok */
+#if defined(CONFIG_SYS_GPS_PORT_CONFIG_2)
+ out_be32(&gpio->port_config, CONFIG_SYS_GPS_PORT_CONFIG_2);
+#endif
+ } else if (failsavelevel == 1) {
+ /* digiboard-version ok - fpga not */
+#if defined(CONFIG_SYS_GPS_PORT_CONFIG_1)
+ out_be32(&gpio->port_config, CONFIG_SYS_GPS_PORT_CONFIG_1);
+#endif
+ } else {
+ /* full failsave-mode */
+#if defined(CONFIG_SYS_GPS_PORT_CONFIG)
+ out_be32(&gpio->port_config, CONFIG_SYS_GPS_PORT_CONFIG);
+#endif
+ }
+#endif
+
+ /*
+ * Setup gpio_wkup_7 as watchdog AS INPUT to disable it - see
+ * ticket #60
+ *
+ * MPC5XXX_WU_GPIO_DIR direction is already 0 (INPUT)
+ * set bit 0(msb) to 1
+ */
+ setbits_be32((void *)MPC5XXX_WU_GPIO_ENABLE, CONFIG_WDOG_GPIO_PIN);
+
+#if defined(CONFIG_A4M2K)
+ /* Setup USB[x] as MPCDiag[0..3] GPIO outputs */
+
+ /* set USB0,6,7,8 (MPCDiag[0..3]) direction to output */
+ gpio->simple_ddr |= 1 << (31 - 15);
+ gpio->simple_ddr |= 1 << (31 - 14);
+ gpio->simple_ddr |= 1 << (31 - 13);
+ gpio->simple_ddr |= 1 << (31 - 12);
+
+ /* enable USB0,6,7,8 (MPCDiag[0..3]) as GPIO */
+ gpio->simple_gpioe |= 1 << (31 - 15);
+ gpio->simple_gpioe |= 1 << (31 - 14);
+ gpio->simple_gpioe |= 1 << (31 - 13);
+ gpio->simple_gpioe |= 1 << (31 - 12);
+
+ /* Setup PSC2[0..2] as STSLED[0..2] GPIO outputs */
+
+ /* set PSC2[0..2] (STSLED[0..2]) direction to output */
+ gpio->simple_ddr |= 1 << (31 - 27);
+ gpio->simple_ddr |= 1 << (31 - 26);
+ gpio->simple_ddr |= 1 << (31 - 25);
+
+ /* enable PSC2[0..2] (STSLED[0..2]) as GPIO */
+ gpio->simple_gpioe |= 1 << (31 - 27);
+ gpio->simple_gpioe |= 1 << (31 - 26);
+ gpio->simple_gpioe |= 1 << (31 - 25);
+
+ /* Setup PSC6[2] as MRST2 self reset GPIO output */
+
+ /* set PSC6[2]/IRDA_TX (MRST2) direction to output */
+ gpio->simple_ddr |= 1 << (31 - 3);
+
+ /* set PSC6[2]/IRDA_TX (MRST2) output as open drain */
+ gpio->simple_ode |= 1 << (31 - 3);
+
+ /* set PSC6[2]/IRDA_TX (MRST2) output as default high */
+ gpio->simple_dvo |= 1 << (31 - 3);
+
+ /* enable PSC6[2]/IRDA_TX (MRST2) as GPIO */
+ gpio->simple_gpioe |= 1 << (31 - 3);
+
+ /* Setup PSC6[3] as HARNSSCD harness code GPIO input */
+
+ /* set PSC6[3]/IR_USB_CLK (HARNSSCD) direction to input */
+ gpio->simple_ddr |= 0 << (31 - 2);
+
+ /* enable PSC6[3]/IR_USB_CLK (HARNSSCD) as GPIO */
+ gpio->simple_gpioe |= 1 << (31 - 2);
+#else
+ /* setup GPIOs for status-leds if needed - see ticket #57 */
+ if (failsavelevel > 0) {
+ /* digiboard-version is OK */
+ /* LED is LOW ACTIVE - so deactivate by set output to 1 */
+ gpio->simple_dvo |= 1 << (31 - 12);
+ gpio->simple_dvo |= 1 << (31 - 13);
+ /* set GPIO direction to output */
+ gpio->simple_ddr |= 1 << (31 - 12);
+ gpio->simple_ddr |= 1 << (31 - 13);
+ /* open drain config is set to "normal output" at reset */
+ /* gpio->simple_ode &=~ ( 1 << (31-12) ); */
+ /* gpio->simple_ode &=~ ( 1 << (31-13) ); */
+ /* enable as GPIO */
+ gpio->simple_gpioe |= 1 << (31 - 12);
+ gpio->simple_gpioe |= 1 << (31 - 13);
+ }
+
+ /* setup fpga irq - see ticket #65 */
+ if (failsavelevel > 1) {
+ /*
+ * The main irq initialisation is done in interrupts.c
+ * mpc5xxx_init_irq
+ */
+ struct mpc5xxx_intr *intr =
+ (struct mpc5xxx_intr *)(MPC5XXX_ICTL);
+
+ setbits_be32(&intr->ctrl, 0x08C01801);
+
+ /*
+ * The MBAR+0x0524 Bit 21:23 CSe are ignored here due to the
+ * already cleared (intr_ctrl) MBAR+0x0510 ECLR[0] bit above
+ */
+ }
+#endif
+}
+
+int checkboard(void)
+{
+ int digiboardversion;
+ int failsavelevel;
+ int fpgaversion;
+
+ get_revisions(&failsavelevel, &digiboardversion, &fpgaversion);
+
+#ifdef CONFIG_A4M2K
+ puts("Board: A4M2K\n");
+ printf(" digiboard IO version %u\n", digiboardversion);
+#else
+ puts("Board: A3M071\n");
+ printf("Rev: failsave level %u\n", failsavelevel);
+ printf(" digiboard IO version %u\n", digiboardversion);
+ if (failsavelevel > 0) /* only if fpga-version red */
+ printf(" fpga IO version %u\n", fpgaversion);
+#endif
+
+ return 0;
+}
+
+/* miscellaneous platform dependent initialisations */
+int misc_init_r(void)
+{
+ /* adjust flash start and offset to detected values */
+ gd->bd->bi_flashstart = flash_info[0].start[0];
+ gd->bd->bi_flashoffset = 0;
+
+ /* adjust mapping */
+ out_be32((void *)MPC5XXX_BOOTCS_START,
+ START_REG(gd->bd->bi_flashstart));
+ out_be32((void *)MPC5XXX_CS0_START, START_REG(gd->bd->bi_flashstart));
+ out_be32((void *)MPC5XXX_BOOTCS_STOP,
+ STOP_REG(gd->bd->bi_flashstart, gd->bd->bi_flashsize));
+ out_be32((void *)MPC5XXX_CS0_STOP,
+ STOP_REG(gd->bd->bi_flashstart, gd->bd->bi_flashsize));
+
+ 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_FLAT_TREE) && defined(CONFIG_OF_BOARD_SETUP) */
+
+#ifdef CONFIG_SPL_OS_BOOT
+/*
+ * A3M071 specific implementation of spl_start_uboot()
+ *
+ * RETURN
+ * 0 if booting into OS is selected (default)
+ * 1 if booting into U-Boot is selected
+ */
+int spl_start_uboot(void)
+{
+ char s[8];
+
+ env_init();
+ getenv_f("boot_os", s, sizeof(s));
+ if ((s != NULL) && (*s == '1' || *s == 'y' || *s == 'Y' ||
+ *s == 't' || *s == 'T'))
+ return 0;
+
+ return 1;
+}
+#endif
+
+#if defined(CONFIG_HW_WATCHDOG)
+static int watchdog_toggle;
+
+void hw_watchdog_reset(void)
+{
+ int val;
+
+ /*
+ * Check if watchdog is enabled via user command
+ */
+ if ((gd->flags & GD_FLG_RELOC) && watchdog_toggle) {
+ /* Set direction to output */
+ setbits_be32((void *)MPC5XXX_WU_GPIO_DIR, CONFIG_WDOG_GPIO_PIN);
+
+ /*
+ * Toggle watchdog output
+ */
+ val = (in_be32((void *)MPC5XXX_WU_GPIO_DATA_O) &
+ CONFIG_WDOG_GPIO_PIN);
+ if (val) {
+ clrbits_be32((void *)MPC5XXX_WU_GPIO_DATA_O,
+ CONFIG_WDOG_GPIO_PIN);
+ } else {
+ setbits_be32((void *)MPC5XXX_WU_GPIO_DATA_O,
+ CONFIG_WDOG_GPIO_PIN);
+ }
+ }
+}
+
+int do_wdog_toggle(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+{
+ if (argc != 2)
+ goto usage;
+
+ if (strncmp(argv[1], "on", 2) == 0)
+ watchdog_toggle = 1;
+ else if (strncmp(argv[1], "off", 3) == 0)
+ watchdog_toggle = 0;
+ else
+ goto usage;
+
+ return 0;
+usage:
+ printf("Usage: wdogtoggle %s\n", cmdtp->usage);
+ return 1;
+}
+
+U_BOOT_CMD(
+ wdogtoggle, CONFIG_SYS_MAXARGS, 2, do_wdog_toggle,
+ "toggle GPIO pin to service watchdog",
+ "[on/off] - Switch watchdog toggling via GPIO pin on/off"
+);
+#endif
Code Review / kvmfornfv.git / blobdiff