2 * (C) Copyright 2002-2006
3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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>
9 * See file CREDITS for list of people who contributed to this
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.
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.
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,
31 #include <stdio_dev.h>
32 #include <timestamp.h>
37 #include <onenand_uboot.h>
39 #include <asm/sections.h>
41 DECLARE_GLOBAL_DATA_PTR;
43 ulong monitor_flash_len;
49 #if !defined(CONFIG_BAUDRATE)
50 #define CONFIG_BAUDRATE 38400
52 static int init_baudrate(void)
54 gd->baudrate = getenv_ulong("baudrate", 10, CONFIG_BAUDRATE);
59 * WARNING: this code looks "cleaner" than the PowerPC version, but
60 * has the disadvantage that you either get nothing, or everything.
61 * On PowerPC, you might see "DRAM: " before the system hangs - which
62 * gives a simple yet clear indication which part of the
63 * initialization if failing.
65 static int display_dram_config(void)
70 puts("RAM Configuration:\n");
72 for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
73 printf("Bank #%d: %08lx ", i, gd->bd->bi_dram[i].start);
74 print_size(gd->bd->bi_dram[i].size, "\n");
79 for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++)
80 size += gd->bd->bi_dram[i].size;
83 print_size(size, "\n");
89 #ifndef CONFIG_SYS_NO_FLASH
90 static void display_flash_config(ulong size)
93 print_size(size, "\n");
95 #endif /* CONFIG_SYS_NO_FLASH */
97 #if defined(CONFIG_CMD_PCI) || defined(CONFIG_PCI)
99 static int nds32_pci_init(void)
104 #endif /* CONFIG_CMD_PCI || CONFIG_PCI */
106 #if defined(CONFIG_PMU) || defined(CONFIG_PCU)
107 #ifndef CONFIG_SKIP_LOWLEVEL_INIT
108 static int pmu_init(void)
110 #if defined(CONFIG_FTPMU010_POWER)
111 #ifdef __NDS32_N1213_43U1H__ /* AG101: internal definition in toolchain */
112 ftpmu010_sdram_clk_disable(CONFIG_SYS_FTPMU010_PDLLCR0_HCLKOUTDIS);
113 ftpmu010_mfpsr_select_dev(FTPMU010_MFPSR_AC97CLKSEL);
114 ftpmu010_sdramhtc_set(CONFIG_SYS_FTPMU010_SDRAMHTC);
115 #endif /* __NDS32_N1213_43U1H__ */
123 * Breathe some life into the board...
125 * Initialize a serial port as console, and carry out some hardware
128 * The first part of initialization is running from Flash memory;
129 * its main purpose is to initialize the RAM so that we
130 * can relocate the monitor code to RAM.
134 * All attempts to come up with a "common" initialization sequence
135 * that works for all boards and architectures failed: some of the
136 * requirements are just _too_ different. To get rid of the resulting
137 * mess of board dependent #ifdef'ed code we now make the whole
138 * initialization sequence configurable to the user.
140 * The requirements for any new initalization function is simple: it
141 * receives a pointer to the "global data" structure as it's only
142 * argument, and returns an integer return code, where 0 means
143 * "continue" and != 0 means "fatal error, hang the system".
145 typedef int (init_fnc_t)(void);
147 void __dram_init_banksize(void)
149 gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
150 gd->bd->bi_dram[0].size = gd->ram_size;
152 void dram_init_banksize(void)
153 __attribute__((weak, alias("__dram_init_banksize")));
155 init_fnc_t *init_sequence[] = {
156 #if defined(CONFIG_ARCH_CPU_INIT)
157 arch_cpu_init, /* basic arch cpu dependent setup */
159 #if defined(CONFIG_PMU) || defined(CONFIG_PCU)
160 #ifndef CONFIG_SKIP_LOWLEVEL_INIT
164 board_init, /* basic board dependent setup */
165 #if defined(CONFIG_USE_IRQ)
166 interrupt_init, /* set up exceptions */
168 timer_init, /* initialize timer */
169 env_init, /* initialize environment */
170 init_baudrate, /* initialze baudrate settings */
171 serial_init, /* serial communications setup */
172 console_init_f, /* stage 1 init of console */
173 #if defined(CONFIG_DISPLAY_BOARDINFO)
174 checkboard, /* display board info */
176 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
179 dram_init, /* configure available RAM banks */
184 void board_init_f(ulong bootflag)
187 init_fnc_t **init_fnc_ptr;
191 /* Pointer is writable since we allocated a register for it */
192 gd = (gd_t *) ((CONFIG_SYS_INIT_SP_ADDR) & ~0x07);
194 memset((void *)gd, 0, GENERATED_GBL_DATA_SIZE);
196 gd->mon_len = (unsigned int)(&__bss_end) - (unsigned int)(&_start);
198 for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
199 if ((*init_fnc_ptr)() != 0)
203 debug("monitor len: %08lX\n", gd->mon_len);
205 * Ram is setup, size stored in gd !!
207 debug("ramsize: %08lX\n", gd->ram_size);
209 addr = CONFIG_SYS_SDRAM_BASE + gd->ram_size;
211 /* round down to next 4 kB limit */
213 debug("Top of RAM usable for U-Boot at: %08lx\n", addr);
216 #ifdef CONFIG_FB_ADDR
217 gd->fb_base = CONFIG_FB_ADDR;
219 /* reserve memory for LCD display (always full pages) */
220 addr = lcd_setmem(addr);
222 #endif /* CONFIG_FB_ADDR */
223 #endif /* CONFIG_LCD */
226 * reserve memory for U-Boot code, data & bss
227 * round down to next 4 kB limit
232 debug("Reserving %ldk for U-Boot at: %08lx\n", gd->mon_len >> 10, addr);
235 * reserve memory for malloc() arena
237 addr_sp = addr - TOTAL_MALLOC_LEN;
238 debug("Reserving %dk for malloc() at: %08lx\n",
239 TOTAL_MALLOC_LEN >> 10, addr_sp);
241 * (permanently) allocate a Board Info struct
242 * and a permanent copy of the "global" data
244 addr_sp -= GENERATED_BD_INFO_SIZE;
245 bd = (bd_t *) addr_sp;
247 memset((void *)bd, 0, GENERATED_BD_INFO_SIZE);
248 debug("Reserving %zu Bytes for Board Info at: %08lx\n",
249 GENERATED_BD_INFO_SIZE, addr_sp);
251 addr_sp -= GENERATED_GBL_DATA_SIZE;
252 id = (gd_t *) addr_sp;
253 debug("Reserving %zu Bytes for Global Data at: %08lx\n",
254 GENERATED_GBL_DATA_SIZE, addr_sp);
256 /* setup stackpointer for exeptions */
257 gd->irq_sp = addr_sp;
258 #ifdef CONFIG_USE_IRQ
259 addr_sp -= (CONFIG_STACKSIZE_IRQ + CONFIG_STACKSIZE_FIQ);
260 debug("Reserving %zu Bytes for IRQ stack at: %08lx\n",
261 CONFIG_STACKSIZE_IRQ+CONFIG_STACKSIZE_FIQ, addr_sp);
263 /* leave 3 words for abort-stack */
266 /* 8-byte alignment for ABI compliance */
268 debug("New Stack Pointer is: %08lx\n", addr_sp);
270 gd->bd->bi_baudrate = gd->baudrate;
271 /* Ram isn't board specific, so move it to board code ... */
272 dram_init_banksize();
273 display_dram_config(); /* and display it */
275 gd->relocaddr = addr;
276 gd->start_addr_sp = addr_sp;
278 gd->reloc_off = addr - _TEXT_BASE;
280 debug("relocation Offset is: %08lx\n", gd->reloc_off);
281 memcpy(id, (void *)gd, GENERATED_GBL_DATA_SIZE);
283 relocate_code(addr_sp, id, addr);
285 /* NOTREACHED - relocate_code() does not return */
289 * This is the next part if the initialization sequence: we are now
290 * running from RAM and have a "normal" C environment, i. e. global
291 * data can be written, BSS has been cleared, the stack size in not
292 * that critical any more, etc.
294 void board_init_r(gd_t *id, ulong dest_addr)
302 gd->flags |= GD_FLG_RELOC; /* tell others: relocation done */
304 monitor_flash_len = (ulong)&_end - (ulong)&_start;
305 debug("monitor flash len: %08lX\n", monitor_flash_len);
307 board_init(); /* Setup chipselects */
309 #if defined(CONFIG_NEEDS_MANUAL_RELOC)
311 * We have to relocate the command table manually
313 fixup_cmdtable(ll_entry_start(cmd_tbl_t, cmd),
314 ll_entry_count(cmd_tbl_t, cmd));
315 #endif /* defined(CONFIG_NEEDS_MANUAL_RELOC) */
319 debug("Now running in RAM - U-Boot at: %08lx\n", dest_addr);
321 /* The Malloc area is immediately below the monitor copy in DRAM */
322 malloc_start = dest_addr - TOTAL_MALLOC_LEN;
323 mem_malloc_init(malloc_start, TOTAL_MALLOC_LEN);
325 #ifndef CONFIG_SYS_NO_FLASH
326 /* configure available FLASH banks */
327 gd->bd->bi_flashstart = CONFIG_SYS_FLASH_BASE;
328 gd->bd->bi_flashsize = flash_init();
329 gd->bd->bi_flashoffset = CONFIG_SYS_FLASH_BASE + gd->bd->bi_flashsize;
331 if (gd->bd->bi_flashsize)
332 display_flash_config(gd->bd->bi_flashsize);
333 #endif /* CONFIG_SYS_NO_FLASH */
335 #if defined(CONFIG_CMD_NAND)
337 nand_init(); /* go init the NAND */
340 #if defined(CONFIG_CMD_IDE)
345 #ifdef CONFIG_GENERIC_MMC
347 mmc_initialize(gd->bd);
350 /* initialize environment */
353 #if defined(CONFIG_CMD_PCI) || defined(CONFIG_PCI)
358 stdio_init(); /* get the devices list going. */
362 #if defined(CONFIG_API)
367 console_init_r(); /* fully init console as a device */
369 #if defined(CONFIG_ARCH_MISC_INIT)
370 /* miscellaneous arch dependent initialisations */
373 #if defined(CONFIG_MISC_INIT_R)
374 /* miscellaneous platform dependent initialisations */
378 #if defined(CONFIG_USE_IRQ)
379 /* set up exceptions */
381 /* enable exceptions */
385 /* Initialize from environment */
386 load_addr = getenv_ulong("loadaddr", 16, load_addr);
388 #ifdef CONFIG_BOARD_LATE_INIT
392 #if defined(CONFIG_CMD_NET)
395 eth_initialize(gd->bd);
396 #if defined(CONFIG_RESET_PHY_R)
397 debug("Reset Ethernet PHY\n");
402 /* main_loop() can return to retry autoboot, if so just run it again. */
406 /* NOTREACHED - no way out of command loop except booting */