1 /*
2 * (C) Copyright 2002-2006
3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
4 *
5 * Copyright (C) 2011 Andes Technology Corporation
6 * Shawn Lin, Andes Technology Corporation <nobuhiro@andestech.com>
7 * Macpaul Lin, Andes Technology Corporation <macpaul@andestech.com>
8 *
9 * See file CREDITS for list of people who contributed to this
10 * project.
11 *
12 * This program is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU General Public License as
14 * published by the Free Software Foundation; either version 2 of
15 * the License, or (at your option) any later version.
16 *
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
21 *
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
25 * MA 02111-1307 USA
26 */
28 #include <common.h>
29 #include <command.h>
30 #include <malloc.h>
31 #include <stdio_dev.h>
32 #include <timestamp.h>
33 #include <version.h>
34 #include <net.h>
35 #include <serial.h>
36 #include <nand.h>
37 #include <onenand_uboot.h>
38 #include <mmc.h>
40 DECLARE_GLOBAL_DATA_PTR;
42 ulong monitor_flash_len;
44 /*
45 * Init Utilities
46 */
48 #if !defined(CONFIG_BAUDRATE)
49 #define CONFIG_BAUDRATE 38400
50 #endif
51 static int init_baudrate(void)
52 {
53 gd->baudrate = getenv_ulong("baudrate", 10, CONFIG_BAUDRATE);
54 return 0;
55 }
57 /*
58 * WARNING: this code looks "cleaner" than the PowerPC version, but
59 * has the disadvantage that you either get nothing, or everything.
60 * On PowerPC, you might see "DRAM: " before the system hangs - which
61 * gives a simple yet clear indication which part of the
62 * initialization if failing.
63 */
64 static int display_dram_config(void)
65 {
66 int i;
68 #ifdef DEBUG
69 puts("RAM Configuration:\n");
71 for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
72 printf("Bank #%d: %08lx ", i, gd->bd->bi_dram[i].start);
73 print_size(gd->bd->bi_dram[i].size, "\n");
74 }
75 #else
76 ulong size = 0;
78 for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++)
79 size += gd->bd->bi_dram[i].size;
81 puts("DRAM: ");
82 print_size(size, "\n");
83 #endif
85 return 0;
86 }
88 #ifndef CONFIG_SYS_NO_FLASH
89 static void display_flash_config(ulong size)
90 {
91 puts("Flash: ");
92 print_size(size, "\n");
93 }
94 #endif /* CONFIG_SYS_NO_FLASH */
96 #if defined(CONFIG_CMD_PCI) || defined(CONFIG_PCI)
97 #include <pci.h>
98 static int nds32_pci_init(void)
99 {
100 pci_init();
101 return 0;
102 }
103 #endif /* CONFIG_CMD_PCI || CONFIG_PCI */
105 #if defined(CONFIG_PMU) || defined(CONFIG_PCU)
106 #ifndef CONFIG_SKIP_LOWLEVEL_INIT
107 static int pmu_init(void)
108 {
109 #if defined(CONFIG_FTPMU010_POWER)
110 #ifdef __NDS32_N1213_43U1H__ /* AG101: internal definition in toolchain */
111 ftpmu010_sdram_clk_disable(CONFIG_SYS_FTPMU010_PDLLCR0_HCLKOUTDIS);
112 ftpmu010_mfpsr_select_dev(FTPMU010_MFPSR_AC97CLKSEL);
113 ftpmu010_sdramhtc_set(CONFIG_SYS_FTPMU010_SDRAMHTC);
114 #endif /* __NDS32_N1213_43U1H__ */
115 #endif
116 return 0;
117 }
118 #endif
119 #endif
121 /*
122 * Breathe some life into the board...
123 *
124 * Initialize a serial port as console, and carry out some hardware
125 * tests.
126 *
127 * The first part of initialization is running from Flash memory;
128 * its main purpose is to initialize the RAM so that we
129 * can relocate the monitor code to RAM.
130 */
132 /*
133 * All attempts to come up with a "common" initialization sequence
134 * that works for all boards and architectures failed: some of the
135 * requirements are just _too_ different. To get rid of the resulting
136 * mess of board dependent #ifdef'ed code we now make the whole
137 * initialization sequence configurable to the user.
138 *
139 * The requirements for any new initalization function is simple: it
140 * receives a pointer to the "global data" structure as it's only
141 * argument, and returns an integer return code, where 0 means
142 * "continue" and != 0 means "fatal error, hang the system".
143 */
144 typedef int (init_fnc_t)(void);
146 void __dram_init_banksize(void)
147 {
148 gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
149 gd->bd->bi_dram[0].size = gd->ram_size;
150 }
151 void dram_init_banksize(void)
152 __attribute__((weak, alias("__dram_init_banksize")));
154 init_fnc_t *init_sequence[] = {
155 #if defined(CONFIG_ARCH_CPU_INIT)
156 arch_cpu_init, /* basic arch cpu dependent setup */
157 #endif
158 #if defined(CONFIG_PMU) || defined(CONFIG_PCU)
159 #ifndef CONFIG_SKIP_LOWLEVEL_INIT
160 pmu_init,
161 #endif
162 #endif
163 board_init, /* basic board dependent setup */
164 #if defined(CONFIG_USE_IRQ)
165 interrupt_init, /* set up exceptions */
166 #endif
167 timer_init, /* initialize timer */
168 env_init, /* initialize environment */
169 init_baudrate, /* initialze baudrate settings */
170 serial_init, /* serial communications setup */
171 console_init_f, /* stage 1 init of console */
172 #if defined(CONFIG_DISPLAY_BOARDINFO)
173 checkboard, /* display board info */
174 #endif
175 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
176 init_func_i2c,
177 #endif
178 dram_init, /* configure available RAM banks */
179 display_dram_config,
180 NULL,
181 };
183 void board_init_f(ulong bootflag)
184 {
185 bd_t *bd;
186 init_fnc_t **init_fnc_ptr;
187 gd_t *id;
188 ulong addr, addr_sp;
190 /* Pointer is writable since we allocated a register for it */
191 gd = (gd_t *) ((CONFIG_SYS_INIT_SP_ADDR) & ~0x07);
193 memset((void *)gd, 0, GENERATED_GBL_DATA_SIZE);
195 gd->mon_len = (unsigned int)(&__bss_end__) - (unsigned int)(&_start);
197 for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
198 if ((*init_fnc_ptr)() != 0)
199 hang();
200 }
202 debug("monitor len: %08lX\n", gd->mon_len);
203 /*
204 * Ram is setup, size stored in gd !!
205 */
206 debug("ramsize: %08lX\n", gd->ram_size);
208 addr = CONFIG_SYS_SDRAM_BASE + gd->ram_size;
210 #if !(defined(CONFIG_SYS_ICACHE_OFF) && defined(CONFIG_SYS_DCACHE_OFF))
211 /* reserve TLB table */
212 addr -= (4096 * 4);
214 /* round down to next 64 kB limit */
215 addr &= ~(0x10000 - 1);
217 gd->tlb_addr = addr;
218 debug("TLB table at: %08lx\n", addr);
219 #endif
221 /* round down to next 4 kB limit */
222 addr &= ~(4096 - 1);
223 debug("Top of RAM usable for U-Boot at: %08lx\n", addr);
225 #ifdef CONFIG_LCD
226 #ifdef CONFIG_FB_ADDR
227 gd->fb_base = CONFIG_FB_ADDR;
228 #else
229 /* reserve memory for LCD display (always full pages) */
230 addr = lcd_setmem(addr);
231 gd->fb_base = addr;
232 #endif /* CONFIG_FB_ADDR */
233 #endif /* CONFIG_LCD */
235 /*
236 * reserve memory for U-Boot code, data & bss
237 * round down to next 4 kB limit
238 */
239 addr -= gd->mon_len;
240 addr &= ~(4096 - 1);
242 debug("Reserving %ldk for U-Boot at: %08lx\n", gd->mon_len >> 10, addr);
244 /*
245 * reserve memory for malloc() arena
246 */
247 addr_sp = addr - TOTAL_MALLOC_LEN;
248 debug("Reserving %dk for malloc() at: %08lx\n",
249 TOTAL_MALLOC_LEN >> 10, addr_sp);
250 /*
251 * (permanently) allocate a Board Info struct
252 * and a permanent copy of the "global" data
253 */
254 addr_sp -= GENERATED_BD_INFO_SIZE;
255 bd = (bd_t *) addr_sp;
256 gd->bd = bd;
257 memset((void *)bd, 0, GENERATED_BD_INFO_SIZE);
258 debug("Reserving %zu Bytes for Board Info at: %08lx\n",
259 GENERATED_BD_INFO_SIZE, addr_sp);
261 addr_sp -= GENERATED_GBL_DATA_SIZE;
262 id = (gd_t *) addr_sp;
263 debug("Reserving %zu Bytes for Global Data at: %08lx\n",
264 GENERATED_GBL_DATA_SIZE, addr_sp);
266 /* setup stackpointer for exeptions */
267 gd->irq_sp = addr_sp;
268 #ifdef CONFIG_USE_IRQ
269 addr_sp -= (CONFIG_STACKSIZE_IRQ + CONFIG_STACKSIZE_FIQ);
270 debug("Reserving %zu Bytes for IRQ stack at: %08lx\n",
271 CONFIG_STACKSIZE_IRQ+CONFIG_STACKSIZE_FIQ, addr_sp);
272 #endif
273 /* leave 3 words for abort-stack */
274 addr_sp -= 12;
276 /* 8-byte alignment for ABI compliance */
277 addr_sp &= ~0x07;
278 debug("New Stack Pointer is: %08lx\n", addr_sp);
280 gd->bd->bi_baudrate = gd->baudrate;
281 /* Ram isn't board specific, so move it to board code ... */
282 dram_init_banksize();
283 display_dram_config(); /* and display it */
285 gd->relocaddr = addr;
286 gd->start_addr_sp = addr_sp;
288 gd->reloc_off = addr - _TEXT_BASE;
290 debug("relocation Offset is: %08lx\n", gd->reloc_off);
291 memcpy(id, (void *)gd, GENERATED_GBL_DATA_SIZE);
293 relocate_code(addr_sp, id, addr);
295 /* NOTREACHED - relocate_code() does not return */
296 }
298 /*
299 * This is the next part if the initialization sequence: we are now
300 * running from RAM and have a "normal" C environment, i. e. global
301 * data can be written, BSS has been cleared, the stack size in not
302 * that critical any more, etc.
303 */
304 void board_init_r(gd_t *id, ulong dest_addr)
305 {
306 bd_t *bd;
307 ulong malloc_start;
309 gd = id;
310 bd = gd->bd;
312 gd->flags |= GD_FLG_RELOC; /* tell others: relocation done */
314 monitor_flash_len = &_end - &_start;
315 debug("monitor flash len: %08lX\n", monitor_flash_len);
317 board_init(); /* Setup chipselects */
319 #if defined(CONFIG_NEEDS_MANUAL_RELOC)
320 /*
321 * We have to relocate the command table manually
322 */
323 fixup_cmdtable(ll_entry_start(cmd_tbl_t, cmd),
324 ll_entry_count(cmd_tbl_t, cmd));
325 #endif /* defined(CONFIG_NEEDS_MANUAL_RELOC) */
327 serial_initialize();
329 debug("Now running in RAM - U-Boot at: %08lx\n", dest_addr);
331 /* The Malloc area is immediately below the monitor copy in DRAM */
332 malloc_start = dest_addr - TOTAL_MALLOC_LEN;
333 mem_malloc_init(malloc_start, TOTAL_MALLOC_LEN);
334 malloc_bin_reloc();
336 #ifndef CONFIG_SYS_NO_FLASH
337 /* configure available FLASH banks */
338 gd->bd->bi_flashstart = CONFIG_SYS_FLASH_BASE;
339 gd->bd->bi_flashsize = flash_init();
340 gd->bd->bi_flashoffset = CONFIG_SYS_FLASH_BASE + gd->bd->bi_flashsize;
342 if (gd->bd->bi_flashsize)
343 display_flash_config(gd->bd->bi_flashsize);
344 #endif /* CONFIG_SYS_NO_FLASH */
346 #if defined(CONFIG_CMD_NAND)
347 puts("NAND: ");
348 nand_init(); /* go init the NAND */
349 #endif
351 #if defined(CONFIG_CMD_IDE)
352 puts("IDE: ");
353 ide_init();
354 #endif
356 #ifdef CONFIG_GENERIC_MMC
357 puts("MMC: ");
358 mmc_initialize(gd->bd);
359 #endif
361 /* initialize environment */
362 env_relocate();
364 #if defined(CONFIG_CMD_PCI) || defined(CONFIG_PCI)
365 puts("PCI: ");
366 nds32_pci_init();
367 #endif
369 stdio_init(); /* get the devices list going. */
371 jumptable_init();
373 #if defined(CONFIG_API)
374 /* Initialize API */
375 api_init();
376 #endif
378 console_init_r(); /* fully init console as a device */
380 #if defined(CONFIG_ARCH_MISC_INIT)
381 /* miscellaneous arch dependent initialisations */
382 arch_misc_init();
383 #endif
384 #if defined(CONFIG_MISC_INIT_R)
385 /* miscellaneous platform dependent initialisations */
386 misc_init_r();
387 #endif
389 #if defined(CONFIG_USE_IRQ)
390 /* set up exceptions */
391 interrupt_init();
392 /* enable exceptions */
393 enable_interrupts();
394 #endif
396 /* Initialize from environment */
397 load_addr = getenv_ulong("loadaddr", 16, load_addr);
399 #ifdef CONFIG_BOARD_LATE_INIT
400 board_late_init();
401 #endif
403 #if defined(CONFIG_CMD_NET)
404 puts("Net: ");
406 eth_initialize(gd->bd);
407 #if defined(CONFIG_RESET_PHY_R)
408 debug("Reset Ethernet PHY\n");
409 reset_phy();
410 #endif
411 #endif
413 /* main_loop() can return to retry autoboot, if so just run it again. */
414 for (;;)
415 main_loop();
417 /* NOTREACHED - no way out of command loop except booting */
418 }
420 void hang(void)
421 {
422 puts("### ERROR ### Please RESET the board ###\n");
423 for (;;)
424 ;
425 }