1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright 2006,2009-2010 Freescale Semiconductor, Inc.
14 #include <asm/cache.h>
17 #include <asm/fsl_law.h>
20 DECLARE_GLOBAL_DATA_PTR;
23 * Default board reset function
30 void board_reset(void) __attribute__((weak, alias("__board_reset")));
39 char buf1[32], buf2[32];
40 volatile immap_t *immap = (immap_t *) CONFIG_SYS_IMMR;
41 volatile ccsr_gur_t *gur = &immap->im_gur;
43 uint msscr0 = mfspr(MSSCR0);
49 if (cpu_numcores() > 1) {
51 puts("Unicore software on multiprocessor system!!\n"
52 "To enable mutlticore build define CONFIG_MP\n");
61 printf(", Version: %d.%d, (0x%08x)\n", major, minor, svr);
65 major = PVR_E600_MAJ(pvr);
66 minor = PVR_E600_MIN(pvr);
68 printf("e600 Core %d", (msscr0 & 0x20) ? 1 : 0);
69 if (gur->pordevsr & MPC86xx_PORDEVSR_CORE1TE)
70 puts("\n Core1Translation Enabled");
71 debug(" (MSSCR0=%x, PORDEVSR=%x)", msscr0, gur->pordevsr);
73 printf(", Version: %d.%d, (0x%08x)\n", major, minor, pvr);
75 get_sys_info(&sysinfo);
77 puts("Clock Configuration:\n");
78 printf(" CPU:%-4s MHz, ", strmhz(buf1, sysinfo.freq_processor));
79 printf("MPX:%-4s MHz\n", strmhz(buf1, sysinfo.freq_systembus));
80 printf(" DDR:%-4s MHz (%s MT/s data rate), ",
81 strmhz(buf1, sysinfo.freq_systembus / 2),
82 strmhz(buf2, sysinfo.freq_systembus));
84 if (sysinfo.freq_localbus > LCRR_CLKDIV) {
85 printf("LBC:%-4s MHz\n", strmhz(buf1, sysinfo.freq_localbus));
87 printf("LBC: unknown (LCRR[CLKDIV] = 0x%02lx)\n",
88 sysinfo.freq_localbus);
91 puts("L1: D-cache 32 KiB enabled\n");
92 puts(" I-cache 32 KiB enabled\n");
95 if (get_l2cr() & 0x80000000) {
96 #if defined(CONFIG_ARCH_MPC8610)
98 #elif defined(CONFIG_ARCH_MPC8641)
101 puts(" KiB enabled\n");
110 int do_reset(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
112 volatile immap_t *immap = (immap_t *)CONFIG_SYS_IMMR;
113 volatile ccsr_gur_t *gur = &immap->im_gur;
115 /* Attempt board-specific reset */
118 /* Next try asserting HRESET_REQ */
119 out_be32(&gur->rstcr, MPC86xx_RSTCR_HRST_REQ);
129 * Get timebase clock frequency
136 get_sys_info(&sys_info);
137 return (sys_info.freq_systembus + 3L) / 4L;
141 #if defined(CONFIG_WATCHDOG)
145 #if defined(CONFIG_ARCH_MPC8610)
147 * This actually feed the hard enabled watchdog.
149 volatile immap_t *immap = (immap_t *)CONFIG_SYS_IMMR;
150 volatile ccsr_wdt_t *wdt = &immap->im_wdt;
151 volatile ccsr_gur_t *gur = &immap->im_gur;
152 u32 tmp = gur->pordevsr;
160 #endif /* CONFIG_WATCHDOG */
163 * Print out the state of various machine registers.
164 * Currently prints out LAWs, BR0/OR0, and BATs
166 void print_reginfo(void)
174 * Set the DDR BATs to reflect the actual size of DDR.
176 * dram_size is the actual size of DDR, in bytes
178 * Note: we assume that CONFIG_MAX_MEM_MAPPED is 2G or smaller as we only
179 * are using a single BAT to cover DDR.
181 * If this is not true, (e.g. CONFIG_MAX_MEM_MAPPED is 2GB but HID0_XBSEN
182 * is not defined) then we might have a situation where U-Boot will attempt
183 * to relocated itself outside of the region mapped by DBAT0.
184 * This will cause a machine check.
186 * Currently we are limited to power of two sized DDR since we only use a
187 * single bat. If a non-power of two size is used that is less than
188 * CONFIG_MAX_MEM_MAPPED u-boot will crash.
191 void setup_ddr_bat(phys_addr_t dram_size)
193 unsigned long batu, bl;
195 bl = TO_BATU_BL(min(dram_size, CONFIG_MAX_MEM_MAPPED));
197 if (BATU_SIZE(bl) != dram_size) {
198 u64 sz = (u64)dram_size - BATU_SIZE(bl);
199 print_size(sz, " left unmapped\n");
202 batu = bl | BATU_VS | BATU_VP;
203 write_bat(DBAT0, batu, CONFIG_SYS_DBAT0L);
204 write_bat(IBAT0, batu, CONFIG_SYS_IBAT0L);