xref: /openbmc/u-boot/common/board_f.c (revision 04735e9c5578dd4f3584be5454b9779e8e5c2af9)
1  /*
2   * Copyright (c) 2011 The Chromium OS Authors.
3   * (C) Copyright 2002-2006
4   * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5   *
6   * (C) Copyright 2002
7   * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
8   * Marius Groeger <mgroeger@sysgo.de>
9   *
10   * See file CREDITS for list of people who contributed to this
11   * project.
12   *
13   * This program is free software; you can redistribute it and/or
14   * modify it under the terms of the GNU General Public License as
15   * published by the Free Software Foundation; either version 2 of
16   * the License, or (at your option) any later version.
17   *
18   * This program is distributed in the hope that it will be useful,
19   * but WITHOUT ANY WARRANTY; without even the implied warranty of
20   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
21   * GNU General Public License for more details.
22   *
23   * You should have received a copy of the GNU General Public License
24   * along with this program; if not, write to the Free Software
25   * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
26   * MA 02111-1307 USA
27   */
28  
29  #include <common.h>
30  #include <linux/compiler.h>
31  #include <version.h>
32  #include <environment.h>
33  #include <fdtdec.h>
34  #include <fs.h>
35  #if defined(CONFIG_CMD_IDE)
36  #include <ide.h>
37  #endif
38  #include <i2c.h>
39  #include <initcall.h>
40  #include <logbuff.h>
41  
42  /* TODO: Can we move these into arch/ headers? */
43  #ifdef CONFIG_8xx
44  #include <mpc8xx.h>
45  #endif
46  #ifdef CONFIG_5xx
47  #include <mpc5xx.h>
48  #endif
49  #ifdef CONFIG_MPC5xxx
50  #include <mpc5xxx.h>
51  #endif
52  
53  #include <os.h>
54  #include <post.h>
55  #include <spi.h>
56  #include <trace.h>
57  #include <watchdog.h>
58  #include <asm/errno.h>
59  #include <asm/io.h>
60  #ifdef CONFIG_MP
61  #include <asm/mp.h>
62  #endif
63  #include <asm/sections.h>
64  #ifdef CONFIG_X86
65  #include <asm/init_helpers.h>
66  #include <asm/relocate.h>
67  #endif
68  #ifdef CONFIG_SANDBOX
69  #include <asm/state.h>
70  #endif
71  #include <linux/compiler.h>
72  
73  /*
74   * Pointer to initial global data area
75   *
76   * Here we initialize it if needed.
77   */
78  #ifdef XTRN_DECLARE_GLOBAL_DATA_PTR
79  #undef	XTRN_DECLARE_GLOBAL_DATA_PTR
80  #define XTRN_DECLARE_GLOBAL_DATA_PTR	/* empty = allocate here */
81  DECLARE_GLOBAL_DATA_PTR = (gd_t *) (CONFIG_SYS_INIT_GD_ADDR);
82  #else
83  DECLARE_GLOBAL_DATA_PTR;
84  #endif
85  
86  /*
87   * sjg: IMO this code should be
88   * refactored to a single function, something like:
89   *
90   * void led_set_state(enum led_colour_t colour, int on);
91   */
92  /************************************************************************
93   * Coloured LED functionality
94   ************************************************************************
95   * May be supplied by boards if desired
96   */
97  inline void __coloured_LED_init(void) {}
98  void coloured_LED_init(void)
99  	__attribute__((weak, alias("__coloured_LED_init")));
100  inline void __red_led_on(void) {}
101  void red_led_on(void) __attribute__((weak, alias("__red_led_on")));
102  inline void __red_led_off(void) {}
103  void red_led_off(void) __attribute__((weak, alias("__red_led_off")));
104  inline void __green_led_on(void) {}
105  void green_led_on(void) __attribute__((weak, alias("__green_led_on")));
106  inline void __green_led_off(void) {}
107  void green_led_off(void) __attribute__((weak, alias("__green_led_off")));
108  inline void __yellow_led_on(void) {}
109  void yellow_led_on(void) __attribute__((weak, alias("__yellow_led_on")));
110  inline void __yellow_led_off(void) {}
111  void yellow_led_off(void) __attribute__((weak, alias("__yellow_led_off")));
112  inline void __blue_led_on(void) {}
113  void blue_led_on(void) __attribute__((weak, alias("__blue_led_on")));
114  inline void __blue_led_off(void) {}
115  void blue_led_off(void) __attribute__((weak, alias("__blue_led_off")));
116  
117  /*
118   * Why is gd allocated a register? Prior to reloc it might be better to
119   * just pass it around to each function in this file?
120   *
121   * After reloc one could argue that it is hardly used and doesn't need
122   * to be in a register. Or if it is it should perhaps hold pointers to all
123   * global data for all modules, so that post-reloc we can avoid the massive
124   * literal pool we get on ARM. Or perhaps just encourage each module to use
125   * a structure...
126   */
127  
128  /*
129   * Could the CONFIG_SPL_BUILD infection become a flag in gd?
130   */
131  
132  #if defined(CONFIG_WATCHDOG)
133  static int init_func_watchdog_init(void)
134  {
135  	puts("       Watchdog enabled\n");
136  	WATCHDOG_RESET();
137  
138  	return 0;
139  }
140  
141  int init_func_watchdog_reset(void)
142  {
143  	WATCHDOG_RESET();
144  
145  	return 0;
146  }
147  #endif /* CONFIG_WATCHDOG */
148  
149  void __board_add_ram_info(int use_default)
150  {
151  	/* please define platform specific board_add_ram_info() */
152  }
153  
154  void board_add_ram_info(int)
155  	__attribute__ ((weak, alias("__board_add_ram_info")));
156  
157  static int init_baud_rate(void)
158  {
159  	gd->baudrate = getenv_ulong("baudrate", 10, CONFIG_BAUDRATE);
160  	return 0;
161  }
162  
163  static int display_text_info(void)
164  {
165  #ifndef CONFIG_SANDBOX
166  	ulong bss_start, bss_end;
167  
168  #ifdef CONFIG_SYS_SYM_OFFSETS
169  	bss_start = _bss_start_ofs + _TEXT_BASE;
170  	bss_end = _bss_end_ofs + _TEXT_BASE;
171  #else
172  	bss_start = (ulong)&__bss_start;
173  	bss_end = (ulong)&__bss_end;
174  #endif
175  	debug("U-Boot code: %08X -> %08lX  BSS: -> %08lX\n",
176  	      CONFIG_SYS_TEXT_BASE, bss_start, bss_end);
177  #endif
178  
179  #ifdef CONFIG_MODEM_SUPPORT
180  	debug("Modem Support enabled\n");
181  #endif
182  #ifdef CONFIG_USE_IRQ
183  	debug("IRQ Stack: %08lx\n", IRQ_STACK_START);
184  	debug("FIQ Stack: %08lx\n", FIQ_STACK_START);
185  #endif
186  
187  	return 0;
188  }
189  
190  static int announce_dram_init(void)
191  {
192  	puts("DRAM:  ");
193  	return 0;
194  }
195  
196  #ifdef CONFIG_PPC
197  static int init_func_ram(void)
198  {
199  #ifdef	CONFIG_BOARD_TYPES
200  	int board_type = gd->board_type;
201  #else
202  	int board_type = 0;	/* use dummy arg */
203  #endif
204  
205  	gd->ram_size = initdram(board_type);
206  
207  	if (gd->ram_size > 0)
208  		return 0;
209  
210  	puts("*** failed ***\n");
211  	return 1;
212  }
213  #endif
214  
215  static int show_dram_config(void)
216  {
217  	ulong size;
218  
219  #ifdef CONFIG_NR_DRAM_BANKS
220  	int i;
221  
222  	debug("\nRAM Configuration:\n");
223  	for (i = size = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
224  		size += gd->bd->bi_dram[i].size;
225  		debug("Bank #%d: %08lx ", i, gd->bd->bi_dram[i].start);
226  #ifdef DEBUG
227  		print_size(gd->bd->bi_dram[i].size, "\n");
228  #endif
229  	}
230  	debug("\nDRAM:  ");
231  #else
232  	size = gd->ram_size;
233  #endif
234  
235  	print_size(size, "");
236  	board_add_ram_info(0);
237  	putc('\n');
238  
239  	return 0;
240  }
241  
242  ulong get_effective_memsize(void)
243  {
244  #ifndef	CONFIG_VERY_BIG_RAM
245  	return gd->ram_size;
246  #else
247  	/* limit stack to what we can reasonable map */
248  	return ((gd->ram_size > CONFIG_MAX_MEM_MAPPED) ?
249  		CONFIG_MAX_MEM_MAPPED : gd->ram_size);
250  #endif
251  }
252  
253  void __dram_init_banksize(void)
254  {
255  #if defined(CONFIG_NR_DRAM_BANKS) && defined(CONFIG_SYS_SDRAM_BASE)
256  	gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
257  	gd->bd->bi_dram[0].size = get_effective_memsize();
258  #endif
259  }
260  
261  void dram_init_banksize(void)
262  	__attribute__((weak, alias("__dram_init_banksize")));
263  
264  #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
265  static int init_func_i2c(void)
266  {
267  	puts("I2C:   ");
268  	i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
269  	puts("ready\n");
270  	return 0;
271  }
272  #endif
273  
274  #if defined(CONFIG_HARD_SPI)
275  static int init_func_spi(void)
276  {
277  	puts("SPI:   ");
278  	spi_init();
279  	puts("ready\n");
280  	return 0;
281  }
282  #endif
283  
284  __maybe_unused
285  static int zero_global_data(void)
286  {
287  	memset((void *)gd, '\0', sizeof(gd_t));
288  
289  	return 0;
290  }
291  
292  static int setup_mon_len(void)
293  {
294  #ifdef CONFIG_SYS_SYM_OFFSETS
295  	gd->mon_len = _bss_end_ofs;
296  #elif defined(CONFIG_SANDBOX)
297  	gd->mon_len = (ulong)&_end - (ulong)_init;
298  #else
299  	/* TODO: use (ulong)&__bss_end - (ulong)&__text_start; ? */
300  	gd->mon_len = (ulong)&__bss_end - CONFIG_SYS_MONITOR_BASE;
301  #endif
302  	return 0;
303  }
304  
305  __weak int arch_cpu_init(void)
306  {
307  	return 0;
308  }
309  
310  #ifdef CONFIG_OF_HOSTFILE
311  
312  #define CHECK(x)		err = (x); if (err) goto failed;
313  
314  /* Create an empty device tree blob */
315  static int make_empty_fdt(void *fdt)
316  {
317  	int err;
318  
319  	CHECK(fdt_create(fdt, 256));
320  	CHECK(fdt_finish_reservemap(fdt));
321  	CHECK(fdt_begin_node(fdt, ""));
322  	CHECK(fdt_end_node(fdt));
323  	CHECK(fdt_finish(fdt));
324  
325  	return 0;
326  failed:
327  	printf("Unable to create empty FDT: %s\n", fdt_strerror(err));
328  	return -EACCES;
329  }
330  
331  static int read_fdt_from_file(void)
332  {
333  	struct sandbox_state *state = state_get_current();
334  	void *blob;
335  	int size;
336  	int err;
337  
338  	blob = map_sysmem(CONFIG_SYS_FDT_LOAD_ADDR, 0);
339  	if (!state->fdt_fname) {
340  		err = make_empty_fdt(blob);
341  		if (!err)
342  			goto done;
343  		return err;
344  	}
345  	err = fs_set_blk_dev("host", NULL, FS_TYPE_SANDBOX);
346  	if (err)
347  		return err;
348  	size = fs_read(state->fdt_fname, CONFIG_SYS_FDT_LOAD_ADDR, 0, 0);
349  	if (size < 0)
350  		return -EIO;
351  
352  done:
353  	gd->fdt_blob = blob;
354  
355  	return 0;
356  }
357  #endif
358  
359  #ifdef CONFIG_SANDBOX
360  static int setup_ram_buf(void)
361  {
362  	gd->arch.ram_buf = os_malloc(CONFIG_SYS_SDRAM_SIZE);
363  	assert(gd->arch.ram_buf);
364  	gd->ram_size = CONFIG_SYS_SDRAM_SIZE;
365  
366  	return 0;
367  }
368  #endif
369  
370  static int setup_fdt(void)
371  {
372  #ifdef CONFIG_OF_EMBED
373  	/* Get a pointer to the FDT */
374  	gd->fdt_blob = _binary_dt_dtb_start;
375  #elif defined CONFIG_OF_SEPARATE
376  	/* FDT is at end of image */
377  # ifdef CONFIG_SYS_SYM_OFFSETS
378  	gd->fdt_blob = (void *)(_end_ofs + CONFIG_SYS_TEXT_BASE);
379  # else
380  	gd->fdt_blob = (ulong *)&_end;
381  # endif
382  #elif defined(CONFIG_OF_HOSTFILE)
383  	if (read_fdt_from_file()) {
384  		puts("Failed to read control FDT\n");
385  		return -1;
386  	}
387  #endif
388  	/* Allow the early environment to override the fdt address */
389  	gd->fdt_blob = (void *)getenv_ulong("fdtcontroladdr", 16,
390  						(uintptr_t)gd->fdt_blob);
391  	return 0;
392  }
393  
394  /* Get the top of usable RAM */
395  __weak ulong board_get_usable_ram_top(ulong total_size)
396  {
397  	return gd->ram_top;
398  }
399  
400  static int setup_dest_addr(void)
401  {
402  	debug("Monitor len: %08lX\n", gd->mon_len);
403  	/*
404  	 * Ram is setup, size stored in gd !!
405  	 */
406  	debug("Ram size: %08lX\n", (ulong)gd->ram_size);
407  #if defined(CONFIG_SYS_MEM_TOP_HIDE)
408  	/*
409  	 * Subtract specified amount of memory to hide so that it won't
410  	 * get "touched" at all by U-Boot. By fixing up gd->ram_size
411  	 * the Linux kernel should now get passed the now "corrected"
412  	 * memory size and won't touch it either. This should work
413  	 * for arch/ppc and arch/powerpc. Only Linux board ports in
414  	 * arch/powerpc with bootwrapper support, that recalculate the
415  	 * memory size from the SDRAM controller setup will have to
416  	 * get fixed.
417  	 */
418  	gd->ram_size -= CONFIG_SYS_MEM_TOP_HIDE;
419  #endif
420  #ifdef CONFIG_SYS_SDRAM_BASE
421  	gd->ram_top = CONFIG_SYS_SDRAM_BASE;
422  #endif
423  	gd->ram_top += get_effective_memsize();
424  	gd->ram_top = board_get_usable_ram_top(gd->mon_len);
425  	gd->relocaddr = gd->ram_top;
426  	debug("Ram top: %08lX\n", (ulong)gd->ram_top);
427  #if defined(CONFIG_MP) && (defined(CONFIG_MPC86xx) || defined(CONFIG_E500))
428  	/*
429  	 * We need to make sure the location we intend to put secondary core
430  	 * boot code is reserved and not used by any part of u-boot
431  	 */
432  	if (gd->relocaddr > determine_mp_bootpg(NULL)) {
433  		gd->relocaddr = determine_mp_bootpg(NULL);
434  		debug("Reserving MP boot page to %08lx\n", gd->relocaddr);
435  	}
436  #endif
437  	return 0;
438  }
439  
440  #if defined(CONFIG_LOGBUFFER) && !defined(CONFIG_ALT_LB_ADDR)
441  static int reserve_logbuffer(void)
442  {
443  	/* reserve kernel log buffer */
444  	gd->relocaddr -= LOGBUFF_RESERVE;
445  	debug("Reserving %dk for kernel logbuffer at %08lx\n", LOGBUFF_LEN,
446  		gd->relocaddr);
447  	return 0;
448  }
449  #endif
450  
451  #ifdef CONFIG_PRAM
452  /* reserve protected RAM */
453  static int reserve_pram(void)
454  {
455  	ulong reg;
456  
457  	reg = getenv_ulong("pram", 10, CONFIG_PRAM);
458  	gd->relocaddr -= (reg << 10);		/* size is in kB */
459  	debug("Reserving %ldk for protected RAM at %08lx\n", reg,
460  	      gd->relocaddr);
461  	return 0;
462  }
463  #endif /* CONFIG_PRAM */
464  
465  /* Round memory pointer down to next 4 kB limit */
466  static int reserve_round_4k(void)
467  {
468  	gd->relocaddr &= ~(4096 - 1);
469  	return 0;
470  }
471  
472  #if !(defined(CONFIG_SYS_ICACHE_OFF) && defined(CONFIG_SYS_DCACHE_OFF)) && \
473  		defined(CONFIG_ARM)
474  static int reserve_mmu(void)
475  {
476  	/* reserve TLB table */
477  	gd->arch.tlb_size = 4096 * 4;
478  	gd->relocaddr -= gd->arch.tlb_size;
479  
480  	/* round down to next 64 kB limit */
481  	gd->relocaddr &= ~(0x10000 - 1);
482  
483  	gd->arch.tlb_addr = gd->relocaddr;
484  	debug("TLB table from %08lx to %08lx\n", gd->arch.tlb_addr,
485  	      gd->arch.tlb_addr + gd->arch.tlb_size);
486  	return 0;
487  }
488  #endif
489  
490  #ifdef CONFIG_LCD
491  static int reserve_lcd(void)
492  {
493  #ifdef CONFIG_FB_ADDR
494  	gd->fb_base = CONFIG_FB_ADDR;
495  #else
496  	/* reserve memory for LCD display (always full pages) */
497  	gd->relocaddr = lcd_setmem(gd->relocaddr);
498  	gd->fb_base = gd->relocaddr;
499  #endif /* CONFIG_FB_ADDR */
500  	return 0;
501  }
502  #endif /* CONFIG_LCD */
503  
504  static int reserve_trace(void)
505  {
506  #ifdef CONFIG_TRACE
507  	gd->relocaddr -= CONFIG_TRACE_BUFFER_SIZE;
508  	gd->trace_buff = map_sysmem(gd->relocaddr, CONFIG_TRACE_BUFFER_SIZE);
509  	debug("Reserving %dk for trace data at: %08lx\n",
510  	      CONFIG_TRACE_BUFFER_SIZE >> 10, gd->relocaddr);
511  #endif
512  
513  	return 0;
514  }
515  
516  #if defined(CONFIG_VIDEO) && (!defined(CONFIG_PPC) || defined(CONFIG_8xx)) \
517  		&& !defined(CONFIG_ARM) && !defined(CONFIG_X86)
518  static int reserve_video(void)
519  {
520  	/* reserve memory for video display (always full pages) */
521  	gd->relocaddr = video_setmem(gd->relocaddr);
522  	gd->fb_base = gd->relocaddr;
523  
524  	return 0;
525  }
526  #endif
527  
528  static int reserve_uboot(void)
529  {
530  	/*
531  	 * reserve memory for U-Boot code, data & bss
532  	 * round down to next 4 kB limit
533  	 */
534  	gd->relocaddr -= gd->mon_len;
535  	gd->relocaddr &= ~(4096 - 1);
536  #ifdef CONFIG_E500
537  	/* round down to next 64 kB limit so that IVPR stays aligned */
538  	gd->relocaddr &= ~(65536 - 1);
539  #endif
540  
541  	debug("Reserving %ldk for U-Boot at: %08lx\n", gd->mon_len >> 10,
542  	      gd->relocaddr);
543  
544  	gd->start_addr_sp = gd->relocaddr;
545  
546  	return 0;
547  }
548  
549  #ifndef CONFIG_SPL_BUILD
550  /* reserve memory for malloc() area */
551  static int reserve_malloc(void)
552  {
553  	gd->start_addr_sp = gd->start_addr_sp - TOTAL_MALLOC_LEN;
554  	debug("Reserving %dk for malloc() at: %08lx\n",
555  			TOTAL_MALLOC_LEN >> 10, gd->start_addr_sp);
556  	return 0;
557  }
558  
559  /* (permanently) allocate a Board Info struct */
560  static int reserve_board(void)
561  {
562  	gd->start_addr_sp -= sizeof(bd_t);
563  	gd->bd = (bd_t *)map_sysmem(gd->start_addr_sp, sizeof(bd_t));
564  	memset(gd->bd, '\0', sizeof(bd_t));
565  	debug("Reserving %zu Bytes for Board Info at: %08lx\n",
566  			sizeof(bd_t), gd->start_addr_sp);
567  	return 0;
568  }
569  #endif
570  
571  static int setup_machine(void)
572  {
573  #ifdef CONFIG_MACH_TYPE
574  	gd->bd->bi_arch_number = CONFIG_MACH_TYPE; /* board id for Linux */
575  #endif
576  	return 0;
577  }
578  
579  static int reserve_global_data(void)
580  {
581  	gd->start_addr_sp -= sizeof(gd_t);
582  	gd->new_gd = (gd_t *)map_sysmem(gd->start_addr_sp, sizeof(gd_t));
583  	debug("Reserving %zu Bytes for Global Data at: %08lx\n",
584  			sizeof(gd_t), gd->start_addr_sp);
585  	return 0;
586  }
587  
588  static int reserve_fdt(void)
589  {
590  	/*
591  	 * If the device tree is sitting immediate above our image then we
592  	 * must relocate it. If it is embedded in the data section, then it
593  	 * will be relocated with other data.
594  	 */
595  	if (gd->fdt_blob) {
596  		gd->fdt_size = ALIGN(fdt_totalsize(gd->fdt_blob) + 0x1000, 32);
597  
598  		gd->start_addr_sp -= gd->fdt_size;
599  		gd->new_fdt = map_sysmem(gd->start_addr_sp, gd->fdt_size);
600  		debug("Reserving %lu Bytes for FDT at: %08lx\n",
601  		      gd->fdt_size, gd->start_addr_sp);
602  	}
603  
604  	return 0;
605  }
606  
607  static int reserve_stacks(void)
608  {
609  #ifdef CONFIG_SPL_BUILD
610  # ifdef CONFIG_ARM
611  	gd->start_addr_sp -= 128;	/* leave 32 words for abort-stack */
612  	gd->irq_sp = gd->start_addr_sp;
613  # endif
614  #else
615  # ifdef CONFIG_PPC
616  	ulong *s;
617  # endif
618  
619  	/* setup stack pointer for exceptions */
620  	gd->start_addr_sp -= 16;
621  	gd->start_addr_sp &= ~0xf;
622  	gd->irq_sp = gd->start_addr_sp;
623  
624  	/*
625  	 * Handle architecture-specific things here
626  	 * TODO(sjg@chromium.org): Perhaps create arch_reserve_stack()
627  	 * to handle this and put in arch/xxx/lib/stack.c
628  	 */
629  # ifdef CONFIG_ARM
630  #  ifdef CONFIG_USE_IRQ
631  	gd->start_addr_sp -= (CONFIG_STACKSIZE_IRQ + CONFIG_STACKSIZE_FIQ);
632  	debug("Reserving %zu Bytes for IRQ stack at: %08lx\n",
633  		CONFIG_STACKSIZE_IRQ + CONFIG_STACKSIZE_FIQ, gd->start_addr_sp);
634  
635  	/* 8-byte alignment for ARM ABI compliance */
636  	gd->start_addr_sp &= ~0x07;
637  #  endif
638  	/* leave 3 words for abort-stack, plus 1 for alignment */
639  	gd->start_addr_sp -= 16;
640  # elif defined(CONFIG_PPC)
641  	/* Clear initial stack frame */
642  	s = (ulong *) gd->start_addr_sp;
643  	*s = 0; /* Terminate back chain */
644  	*++s = 0; /* NULL return address */
645  # endif /* Architecture specific code */
646  
647  	return 0;
648  #endif
649  }
650  
651  static int display_new_sp(void)
652  {
653  	debug("New Stack Pointer is: %08lx\n", gd->start_addr_sp);
654  
655  	return 0;
656  }
657  
658  #ifdef CONFIG_PPC
659  static int setup_board_part1(void)
660  {
661  	bd_t *bd = gd->bd;
662  
663  	/*
664  	 * Save local variables to board info struct
665  	 */
666  
667  	bd->bi_memstart = CONFIG_SYS_SDRAM_BASE;	/* start of memory */
668  	bd->bi_memsize = gd->ram_size;			/* size in bytes */
669  
670  #ifdef CONFIG_SYS_SRAM_BASE
671  	bd->bi_sramstart = CONFIG_SYS_SRAM_BASE;	/* start of SRAM */
672  	bd->bi_sramsize = CONFIG_SYS_SRAM_SIZE;		/* size  of SRAM */
673  #endif
674  
675  #if defined(CONFIG_8xx) || defined(CONFIG_8260) || defined(CONFIG_5xx) || \
676  		defined(CONFIG_E500) || defined(CONFIG_MPC86xx)
677  	bd->bi_immr_base = CONFIG_SYS_IMMR;	/* base  of IMMR register     */
678  #endif
679  #if defined(CONFIG_MPC5xxx)
680  	bd->bi_mbar_base = CONFIG_SYS_MBAR;	/* base of internal registers */
681  #endif
682  #if defined(CONFIG_MPC83xx)
683  	bd->bi_immrbar = CONFIG_SYS_IMMR;
684  #endif
685  
686  	return 0;
687  }
688  
689  static int setup_board_part2(void)
690  {
691  	bd_t *bd = gd->bd;
692  
693  	bd->bi_intfreq = gd->cpu_clk;	/* Internal Freq, in Hz */
694  	bd->bi_busfreq = gd->bus_clk;	/* Bus Freq,      in Hz */
695  #if defined(CONFIG_CPM2)
696  	bd->bi_cpmfreq = gd->arch.cpm_clk;
697  	bd->bi_brgfreq = gd->arch.brg_clk;
698  	bd->bi_sccfreq = gd->arch.scc_clk;
699  	bd->bi_vco = gd->arch.vco_out;
700  #endif /* CONFIG_CPM2 */
701  #if defined(CONFIG_MPC512X)
702  	bd->bi_ipsfreq = gd->arch.ips_clk;
703  #endif /* CONFIG_MPC512X */
704  #if defined(CONFIG_MPC5xxx)
705  	bd->bi_ipbfreq = gd->arch.ipb_clk;
706  	bd->bi_pcifreq = gd->pci_clk;
707  #endif /* CONFIG_MPC5xxx */
708  
709  	return 0;
710  }
711  #endif
712  
713  #ifdef CONFIG_SYS_EXTBDINFO
714  static int setup_board_extra(void)
715  {
716  	bd_t *bd = gd->bd;
717  
718  	strncpy((char *) bd->bi_s_version, "1.2", sizeof(bd->bi_s_version));
719  	strncpy((char *) bd->bi_r_version, U_BOOT_VERSION,
720  		sizeof(bd->bi_r_version));
721  
722  	bd->bi_procfreq = gd->cpu_clk;	/* Processor Speed, In Hz */
723  	bd->bi_plb_busfreq = gd->bus_clk;
724  #if defined(CONFIG_405GP) || defined(CONFIG_405EP) || \
725  		defined(CONFIG_440EP) || defined(CONFIG_440GR) || \
726  		defined(CONFIG_440EPX) || defined(CONFIG_440GRX)
727  	bd->bi_pci_busfreq = get_PCI_freq();
728  	bd->bi_opbfreq = get_OPB_freq();
729  #elif defined(CONFIG_XILINX_405)
730  	bd->bi_pci_busfreq = get_PCI_freq();
731  #endif
732  
733  	return 0;
734  }
735  #endif
736  
737  #ifdef CONFIG_POST
738  static int init_post(void)
739  {
740  	post_bootmode_init();
741  	post_run(NULL, POST_ROM | post_bootmode_get(0));
742  
743  	return 0;
744  }
745  #endif
746  
747  static int setup_baud_rate(void)
748  {
749  	/* Ick, can we get rid of this line? */
750  	gd->bd->bi_baudrate = gd->baudrate;
751  
752  	return 0;
753  }
754  
755  static int setup_dram_config(void)
756  {
757  	/* Ram is board specific, so move it to board code ... */
758  	dram_init_banksize();
759  
760  	return 0;
761  }
762  
763  static int reloc_fdt(void)
764  {
765  	if (gd->new_fdt) {
766  		memcpy(gd->new_fdt, gd->fdt_blob, gd->fdt_size);
767  		gd->fdt_blob = gd->new_fdt;
768  	}
769  
770  	return 0;
771  }
772  
773  static int setup_reloc(void)
774  {
775  	gd->reloc_off = gd->relocaddr - CONFIG_SYS_TEXT_BASE;
776  	memcpy(gd->new_gd, (char *)gd, sizeof(gd_t));
777  
778  	debug("Relocation Offset is: %08lx\n", gd->reloc_off);
779  	debug("Relocating to %08lx, new gd at %08lx, sp at %08lx\n",
780  	      gd->relocaddr, (ulong)map_to_sysmem(gd->new_gd),
781  	      gd->start_addr_sp);
782  
783  	return 0;
784  }
785  
786  /* ARM calls relocate_code from its crt0.S */
787  #if !defined(CONFIG_ARM)
788  
789  static int jump_to_copy(void)
790  {
791  	/*
792  	 * x86 is special, but in a nice way. It uses a trampoline which
793  	 * enables the dcache if possible.
794  	 *
795  	 * For now, other archs use relocate_code(), which is implemented
796  	 * similarly for all archs. When we do generic relocation, hopefully
797  	 * we can make all archs enable the dcache prior to relocation.
798  	 */
799  #ifdef CONFIG_X86
800  	/*
801  	 * SDRAM and console are now initialised. The final stack can now
802  	 * be setup in SDRAM. Code execution will continue in Flash, but
803  	 * with the stack in SDRAM and Global Data in temporary memory
804  	 * (CPU cache)
805  	 */
806  	board_init_f_r_trampoline(gd->start_addr_sp);
807  #elif defined(CONFIG_SANDBOX)
808  	board_init_r(gd->new_gd, 0);
809  #else
810  	relocate_code(gd->start_addr_sp, gd->new_gd, gd->relocaddr);
811  #endif
812  
813  	return 0;
814  }
815  #endif
816  
817  /* Record the board_init_f() bootstage (after arch_cpu_init()) */
818  static int mark_bootstage(void)
819  {
820  	bootstage_mark_name(BOOTSTAGE_ID_START_UBOOT_F, "board_init_f");
821  
822  	return 0;
823  }
824  
825  static init_fnc_t init_sequence_f[] = {
826  #if !defined(CONFIG_CPM2) && !defined(CONFIG_MPC512X) && \
827  		!defined(CONFIG_MPC83xx) && !defined(CONFIG_MPC85xx) && \
828  		!defined(CONFIG_MPC86xx) && !defined(CONFIG_X86)
829  	zero_global_data,
830  #endif
831  #ifdef CONFIG_SANDBOX
832  	setup_ram_buf,
833  #endif
834  	setup_mon_len,
835  	setup_fdt,
836  	trace_early_init,
837  #if defined(CONFIG_MPC85xx) || defined(CONFIG_MPC86xx)
838  	/* TODO: can this go into arch_cpu_init()? */
839  	probecpu,
840  #endif
841  	arch_cpu_init,		/* basic arch cpu dependent setup */
842  #ifdef CONFIG_X86
843  	cpu_init_f,		/* TODO(sjg@chromium.org): remove */
844  # ifdef CONFIG_OF_CONTROL
845  	find_fdt,		/* TODO(sjg@chromium.org): remove */
846  # endif
847  #endif
848  	mark_bootstage,
849  #ifdef CONFIG_OF_CONTROL
850  	fdtdec_check_fdt,
851  #endif
852  #if defined(CONFIG_BOARD_EARLY_INIT_F)
853  	board_early_init_f,
854  #endif
855  	/* TODO: can any of this go into arch_cpu_init()? */
856  #if defined(CONFIG_PPC) && !defined(CONFIG_8xx_CPUCLK_DEFAULT)
857  	get_clocks,		/* get CPU and bus clocks (etc.) */
858  #if defined(CONFIG_TQM8xxL) && !defined(CONFIG_TQM866M) \
859  		&& !defined(CONFIG_TQM885D)
860  	adjust_sdram_tbs_8xx,
861  #endif
862  	/* TODO: can we rename this to timer_init()? */
863  	init_timebase,
864  #endif
865  #ifdef CONFIG_ARM
866  	timer_init,		/* initialize timer */
867  #endif
868  #ifdef CONFIG_SYS_ALLOC_DPRAM
869  #if !defined(CONFIG_CPM2)
870  	dpram_init,
871  #endif
872  #endif
873  #if defined(CONFIG_BOARD_POSTCLK_INIT)
874  	board_postclk_init,
875  #endif
876  #ifdef CONFIG_FSL_ESDHC
877  	get_clocks,
878  #endif
879  	env_init,		/* initialize environment */
880  #if defined(CONFIG_8xx_CPUCLK_DEFAULT)
881  	/* get CPU and bus clocks according to the environment variable */
882  	get_clocks_866,
883  	/* adjust sdram refresh rate according to the new clock */
884  	sdram_adjust_866,
885  	init_timebase,
886  #endif
887  	init_baud_rate,		/* initialze baudrate settings */
888  	serial_init,		/* serial communications setup */
889  	console_init_f,		/* stage 1 init of console */
890  #ifdef CONFIG_SANDBOX
891  	sandbox_early_getopt_check,
892  #endif
893  #ifdef CONFIG_OF_CONTROL
894  	fdtdec_prepare_fdt,
895  #endif
896  	display_options,	/* say that we are here */
897  	display_text_info,	/* show debugging info if required */
898  #if defined(CONFIG_8260)
899  	prt_8260_rsr,
900  	prt_8260_clks,
901  #endif /* CONFIG_8260 */
902  #if defined(CONFIG_MPC83xx)
903  	prt_83xx_rsr,
904  #endif
905  #ifdef CONFIG_PPC
906  	checkcpu,
907  #endif
908  #if defined(CONFIG_DISPLAY_CPUINFO)
909  	print_cpuinfo,		/* display cpu info (and speed) */
910  #endif
911  #if defined(CONFIG_MPC5xxx)
912  	prt_mpc5xxx_clks,
913  #endif /* CONFIG_MPC5xxx */
914  #if defined(CONFIG_DISPLAY_BOARDINFO)
915  	checkboard,		/* display board info */
916  #endif
917  	INIT_FUNC_WATCHDOG_INIT
918  #if defined(CONFIG_MISC_INIT_F)
919  	misc_init_f,
920  #endif
921  	INIT_FUNC_WATCHDOG_RESET
922  #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
923  	init_func_i2c,
924  #endif
925  #if defined(CONFIG_HARD_SPI)
926  	init_func_spi,
927  #endif
928  #ifdef CONFIG_X86
929  	dram_init_f,		/* configure available RAM banks */
930  	calculate_relocation_address,
931  #endif
932  	announce_dram_init,
933  	/* TODO: unify all these dram functions? */
934  #ifdef CONFIG_ARM
935  	dram_init,		/* configure available RAM banks */
936  #endif
937  #ifdef CONFIG_PPC
938  	init_func_ram,
939  #endif
940  #ifdef CONFIG_POST
941  	post_init_f,
942  #endif
943  	INIT_FUNC_WATCHDOG_RESET
944  #if defined(CONFIG_SYS_DRAM_TEST)
945  	testdram,
946  #endif /* CONFIG_SYS_DRAM_TEST */
947  	INIT_FUNC_WATCHDOG_RESET
948  
949  #ifdef CONFIG_POST
950  	init_post,
951  #endif
952  	INIT_FUNC_WATCHDOG_RESET
953  	/*
954  	 * Now that we have DRAM mapped and working, we can
955  	 * relocate the code and continue running from DRAM.
956  	 *
957  	 * Reserve memory at end of RAM for (top down in that order):
958  	 *  - area that won't get touched by U-Boot and Linux (optional)
959  	 *  - kernel log buffer
960  	 *  - protected RAM
961  	 *  - LCD framebuffer
962  	 *  - monitor code
963  	 *  - board info struct
964  	 */
965  	setup_dest_addr,
966  #if defined(CONFIG_LOGBUFFER) && !defined(CONFIG_ALT_LB_ADDR)
967  	reserve_logbuffer,
968  #endif
969  #ifdef CONFIG_PRAM
970  	reserve_pram,
971  #endif
972  	reserve_round_4k,
973  #if !(defined(CONFIG_SYS_ICACHE_OFF) && defined(CONFIG_SYS_DCACHE_OFF)) && \
974  		defined(CONFIG_ARM)
975  	reserve_mmu,
976  #endif
977  #ifdef CONFIG_LCD
978  	reserve_lcd,
979  #endif
980  	reserve_trace,
981  	/* TODO: Why the dependency on CONFIG_8xx? */
982  #if defined(CONFIG_VIDEO) && (!defined(CONFIG_PPC) || defined(CONFIG_8xx)) \
983  		&& !defined(CONFIG_ARM) && !defined(CONFIG_X86)
984  	reserve_video,
985  #endif
986  	reserve_uboot,
987  #ifndef CONFIG_SPL_BUILD
988  	reserve_malloc,
989  	reserve_board,
990  #endif
991  	setup_machine,
992  	reserve_global_data,
993  	reserve_fdt,
994  	reserve_stacks,
995  	setup_dram_config,
996  	show_dram_config,
997  #ifdef CONFIG_PPC
998  	setup_board_part1,
999  	INIT_FUNC_WATCHDOG_RESET
1000  	setup_board_part2,
1001  #endif
1002  	setup_baud_rate,
1003  	display_new_sp,
1004  #ifdef CONFIG_SYS_EXTBDINFO
1005  	setup_board_extra,
1006  #endif
1007  	INIT_FUNC_WATCHDOG_RESET
1008  	reloc_fdt,
1009  	setup_reloc,
1010  #ifndef CONFIG_ARM
1011  	jump_to_copy,
1012  #endif
1013  	NULL,
1014  };
1015  
1016  void board_init_f(ulong boot_flags)
1017  {
1018  #ifndef CONFIG_X86
1019  	gd_t data;
1020  
1021  	gd = &data;
1022  #endif
1023  
1024  	gd->flags = boot_flags;
1025  
1026  	if (initcall_run_list(init_sequence_f))
1027  		hang();
1028  
1029  #ifndef CONFIG_ARM
1030  	/* NOTREACHED - jump_to_copy() does not return */
1031  	hang();
1032  #endif
1033  }
1034  
1035  #ifdef CONFIG_X86
1036  /*
1037   * For now this code is only used on x86.
1038   *
1039   * init_sequence_f_r is the list of init functions which are run when
1040   * U-Boot is executing from Flash with a semi-limited 'C' environment.
1041   * The following limitations must be considered when implementing an
1042   * '_f_r' function:
1043   *  - 'static' variables are read-only
1044   *  - Global Data (gd->xxx) is read/write
1045   *
1046   * The '_f_r' sequence must, as a minimum, copy U-Boot to RAM (if
1047   * supported).  It _should_, if possible, copy global data to RAM and
1048   * initialise the CPU caches (to speed up the relocation process)
1049   *
1050   * NOTE: At present only x86 uses this route, but it is intended that
1051   * all archs will move to this when generic relocation is implemented.
1052   */
1053  static init_fnc_t init_sequence_f_r[] = {
1054  	init_cache_f_r,
1055  	copy_uboot_to_ram,
1056  	clear_bss,
1057  	do_elf_reloc_fixups,
1058  
1059  	NULL,
1060  };
1061  
1062  void board_init_f_r(void)
1063  {
1064  	if (initcall_run_list(init_sequence_f_r))
1065  		hang();
1066  
1067  	/*
1068  	 * U-Boot has been copied into SDRAM, the BSS has been cleared etc.
1069  	 * Transfer execution from Flash to RAM by calculating the address
1070  	 * of the in-RAM copy of board_init_r() and calling it
1071  	 */
1072  	(board_init_r + gd->reloc_off)(gd, gd->relocaddr);
1073  
1074  	/* NOTREACHED - board_init_r() does not return */
1075  	hang();
1076  }
1077  #endif /* CONFIG_X86 */
1078