--- /dev/null
+/*
+ * Copyright 2006,2009-2010 Freescale Semiconductor, Inc.
+ * Jeff Brown
+ * Srikanth Srinivasan (srikanth.srinivasan@freescale.com)
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <watchdog.h>
+#include <command.h>
+#include <asm/cache.h>
+#include <asm/mmu.h>
+#include <mpc86xx.h>
+#include <asm/fsl_law.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+/*
+ * Default board reset function
+ */
+static void
+__board_reset(void)
+{
+ /* Do nothing */
+}
+void board_reset(void) __attribute__((weak, alias("__board_reset")));
+
+
+int
+checkcpu(void)
+{
+ sys_info_t sysinfo;
+ uint pvr, svr;
+ uint major, minor;
+ char buf1[32], buf2[32];
+ volatile immap_t *immap = (immap_t *) CONFIG_SYS_IMMR;
+ volatile ccsr_gur_t *gur = &immap->im_gur;
+ struct cpu_type *cpu;
+ uint msscr0 = mfspr(MSSCR0);
+
+ svr = get_svr();
+ major = SVR_MAJ(svr);
+ minor = SVR_MIN(svr);
+
+ if (cpu_numcores() > 1) {
+#ifndef CONFIG_MP
+ puts("Unicore software on multiprocessor system!!\n"
+ "To enable mutlticore build define CONFIG_MP\n");
+#endif
+ }
+ puts("CPU: ");
+
+ cpu = gd->arch.cpu;
+
+ puts(cpu->name);
+
+ printf(", Version: %d.%d, (0x%08x)\n", major, minor, svr);
+ puts("Core: ");
+
+ pvr = get_pvr();
+ major = PVR_E600_MAJ(pvr);
+ minor = PVR_E600_MIN(pvr);
+
+ printf("e600 Core %d", (msscr0 & 0x20) ? 1 : 0);
+ if (gur->pordevsr & MPC86xx_PORDEVSR_CORE1TE)
+ puts("\n Core1Translation Enabled");
+ debug(" (MSSCR0=%x, PORDEVSR=%x)", msscr0, gur->pordevsr);
+
+ printf(", Version: %d.%d, (0x%08x)\n", major, minor, pvr);
+
+ get_sys_info(&sysinfo);
+
+ puts("Clock Configuration:\n");
+ printf(" CPU:%-4s MHz, ", strmhz(buf1, sysinfo.freq_processor));
+ printf("MPX:%-4s MHz\n", strmhz(buf1, sysinfo.freq_systembus));
+ printf(" DDR:%-4s MHz (%s MT/s data rate), ",
+ strmhz(buf1, sysinfo.freq_systembus / 2),
+ strmhz(buf2, sysinfo.freq_systembus));
+
+ if (sysinfo.freq_localbus > LCRR_CLKDIV) {
+ printf("LBC:%-4s MHz\n", strmhz(buf1, sysinfo.freq_localbus));
+ } else {
+ printf("LBC: unknown (LCRR[CLKDIV] = 0x%02lx)\n",
+ sysinfo.freq_localbus);
+ }
+
+ puts("L1: D-cache 32 KiB enabled\n");
+ puts(" I-cache 32 KiB enabled\n");
+
+ puts("L2: ");
+ if (get_l2cr() & 0x80000000) {
+#if defined(CONFIG_MPC8610)
+ puts("256");
+#elif defined(CONFIG_MPC8641)
+ puts("512");
+#endif
+ puts(" KiB enabled\n");
+ } else {
+ puts("Disabled\n");
+ }
+
+ return 0;
+}
+
+
+int do_reset(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+{
+ volatile immap_t *immap = (immap_t *)CONFIG_SYS_IMMR;
+ volatile ccsr_gur_t *gur = &immap->im_gur;
+
+ /* Attempt board-specific reset */
+ board_reset();
+
+ /* Next try asserting HRESET_REQ */
+ out_be32(&gur->rstcr, MPC86xx_RSTCR_HRST_REQ);
+
+ while (1)
+ ;
+
+ return 1;
+}
+
+
+/*
+ * Get timebase clock frequency
+ */
+unsigned long
+get_tbclk(void)
+{
+ sys_info_t sys_info;
+
+ get_sys_info(&sys_info);
+ return (sys_info.freq_systembus + 3L) / 4L;
+}
+
+
+#if defined(CONFIG_WATCHDOG)
+void
+watchdog_reset(void)
+{
+#if defined(CONFIG_MPC8610)
+ /*
+ * This actually feed the hard enabled watchdog.
+ */
+ volatile immap_t *immap = (immap_t *)CONFIG_SYS_IMMR;
+ volatile ccsr_wdt_t *wdt = &immap->im_wdt;
+ volatile ccsr_gur_t *gur = &immap->im_gur;
+ u32 tmp = gur->pordevsr;
+
+ if (tmp & 0x4000) {
+ wdt->swsrr = 0x556c;
+ wdt->swsrr = 0xaa39;
+ }
+#endif
+}
+#endif /* CONFIG_WATCHDOG */
+
+/*
+ * Print out the state of various machine registers.
+ * Currently prints out LAWs, BR0/OR0, and BATs
+ */
+void mpc86xx_reginfo(void)
+{
+ print_bats();
+ print_laws();
+ print_lbc_regs();
+}
+
+/*
+ * Set the DDR BATs to reflect the actual size of DDR.
+ *
+ * dram_size is the actual size of DDR, in bytes
+ *
+ * Note: we assume that CONFIG_MAX_MEM_MAPPED is 2G or smaller as we only
+ * are using a single BAT to cover DDR.
+ *
+ * If this is not true, (e.g. CONFIG_MAX_MEM_MAPPED is 2GB but HID0_XBSEN
+ * is not defined) then we might have a situation where U-Boot will attempt
+ * to relocated itself outside of the region mapped by DBAT0.
+ * This will cause a machine check.
+ *
+ * Currently we are limited to power of two sized DDR since we only use a
+ * single bat. If a non-power of two size is used that is less than
+ * CONFIG_MAX_MEM_MAPPED u-boot will crash.
+ *
+ */
+void setup_ddr_bat(phys_addr_t dram_size)
+{
+ unsigned long batu, bl;
+
+ bl = TO_BATU_BL(min(dram_size, CONFIG_MAX_MEM_MAPPED));
+
+ if (BATU_SIZE(bl) != dram_size) {
+ u64 sz = (u64)dram_size - BATU_SIZE(bl);
+ print_size(sz, " left unmapped\n");
+ }
+
+ batu = bl | BATU_VS | BATU_VP;
+ write_bat(DBAT0, batu, CONFIG_SYS_DBAT0L);
+ write_bat(IBAT0, batu, CONFIG_SYS_IBAT0L);
+}
Code Review / kvmfornfv.git / blobdiff