1 //==========================================================================
5 // HAL misc board support code
7 //==========================================================================
8 //####ECOSGPLCOPYRIGHTBEGIN####
9 // -------------------------------------------
10 // This file is part of eCos, the Embedded Configurable Operating System.
11 // Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
13 // eCos is free software; you can redistribute it and/or modify it under
14 // the terms of the GNU General Public License as published by the Free
15 // Software Foundation; either version 2 or (at your option) any later version.
17 // eCos is distributed in the hope that it will be useful, but WITHOUT ANY
18 // WARRANTY; without even the implied warranty of MERCHANTABILITY or
19 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
22 // You should have received a copy of the GNU General Public License along
23 // with eCos; if not, write to the Free Software Foundation, Inc.,
24 // 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
26 // As a special exception, if other files instantiate templates or use macros
27 // or inline functions from this file, or you compile this file and link it
28 // with other works to produce a work based on this file, this file does not
29 // by itself cause the resulting work to be covered by the GNU General Public
30 // License. However the source code for this file must still be made available
31 // in accordance with section (3) of the GNU General Public License.
33 // This exception does not invalidate any other reasons why a work based on
34 // this file might be covered by the GNU General Public License.
36 // Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
37 // at http://sources.redhat.com/ecos/ecos-license/
38 // -------------------------------------------
39 //####ECOSGPLCOPYRIGHTEND####
40 //========================================================================*/
43 #include <pkgconf/hal.h>
44 #include <pkgconf/system.h>
45 #include CYGBLD_HAL_PLATFORM_H
47 #include <cyg/infra/cyg_type.h> // base types
48 #include <cyg/infra/cyg_trac.h> // tracing macros
49 #include <cyg/infra/cyg_ass.h> // assertion macros
51 #include <cyg/hal/hal_misc.h> // Size constants
52 #include <cyg/hal/hal_io.h> // IO macros
53 #include <cyg/hal/hal_arch.h> // Register state info
54 #include <cyg/hal/hal_diag.h>
55 #include <cyg/hal/hal_intr.h> // Interrupt names
56 #include <cyg/hal/hal_cache.h> // Cache control
57 #include <cyg/hal/hal_soc.h> // Hardware definitions
58 #include <cyg/hal/hal_mm.h> // MMap table definitions
60 #include <cyg/infra/diag.h> // diag_printf
62 // Most initialization has already been done before we get here.
63 // All we do here is set up the interrupt environment.
64 // FIXME: some of the stuff in hal_platform_setup could be moved here.
66 externC void plf_hardware_init(void);
70 * System_rev will have the following format
71 * 31-12 = part # (0x31, 0x32, 0x27, 0x91131, 0x91321, etc)
76 unsigned int system_rev = CHIP_REV_1_0;
77 static int find_correct_chip;
78 extern char HAL_PLATFORM_EXTRA[20];
80 static int _reset_reason;
83 unsigned int bt_mem_ctl:2,
103 } __attribute__ ((packed));
104 struct soc_sbmr *soc_sbmr = (struct soc_sbmr *) (SRC_BASE_ADDR + 0x4);
106 * This functions reads the IIM module and returns the system revision number.
107 * It returns the IIM silicon revision reg value if valid product rev is found.
108 . Otherwise, it returns -1.
110 static int read_system_rev(void)
115 rom_id_address = ROM_BASE_ADDRESS_VIRT + ROM_SI_REV_OFFSET;
117 val = readl(IIM_BASE_ADDR + IIM_PREV_OFF);
119 system_rev = 0x51 << PART_NUMBER_OFFSET; /* For MX51 Platform*/
121 /* Now trying to retrieve the silicon rev from IIM's SREV register */
122 return *rom_id_address;
125 #ifdef MXCFLASH_SELECT_NAND
126 extern nfc_setup_func_t *nfc_setup;
128 unsigned int mxc_nfc_soc_setup(unsigned int pg_sz, unsigned int io_sz,
129 unsigned int is_mlc, unsigned int num_of_chips);
130 void hal_hardware_init(void)
132 int ver = read_system_rev();
134 unsigned int *fis_addr = (unsigned int *)IRAM_BASE_ADDR;
136 _reset_reason = readl(SRC_BASE_ADDR + 0x8);
139 _mxc_fis = FROM_MMC_FLASH;
141 case FROM_NAND_FLASH:
142 _mxc_fis = FROM_NAND_FLASH;
144 case FROM_SPI_NOR_FLASH:
145 _mxc_fis = FROM_SPI_NOR_FLASH;
148 if (soc_sbmr->bt_mem_ctl == 0x3) {
149 if (soc_sbmr->bt_mem_type == 0) {
150 _mxc_fis = MMC_FLASH_BOOT;
151 } else if (soc_sbmr->bt_mem_type == 3) {
152 _mxc_fis = SPI_NOR_FLASH_BOOT;
154 } else if (soc_sbmr->bt_mem_ctl == 1) {
155 _mxc_fis = NAND_FLASH_BOOT;
159 find_correct_chip = ver;
161 if (ver != CHIP_VERSION_NONE) {
162 /* Valid product revision found. Check actual silicon rev from the ROM code. */
164 HAL_PLATFORM_EXTRA[5] = '1';
165 HAL_PLATFORM_EXTRA[7] = '0';
166 system_rev |= 1 << MAJOR_NUMBER_OFFSET; /*Major Number*/
167 system_rev |= 0 << MINOR_NUMBER_OFFSET; /*Minor Number*/
168 } else if (ver == 0x2) {
169 HAL_PLATFORM_EXTRA[5] = '1';
170 HAL_PLATFORM_EXTRA[7] = '1';
171 system_rev |= 1 << MAJOR_NUMBER_OFFSET; /*Major Number*/
172 system_rev |= 1 << MINOR_NUMBER_OFFSET; /*Minor Number*/
173 } else if (ver == 0x10) {
174 HAL_PLATFORM_EXTRA[5] = '2';
175 HAL_PLATFORM_EXTRA[7] = '0';
176 system_rev |= 2 << MAJOR_NUMBER_OFFSET; /*Major Number*/
177 system_rev |= 0 << MINOR_NUMBER_OFFSET; /*Minor Number*/
179 HAL_PLATFORM_EXTRA[5] = 'x';
180 HAL_PLATFORM_EXTRA[7] = 'x';
181 system_rev |= 1 << MAJOR_NUMBER_OFFSET; /*Major Number*/
182 system_rev |= 0 << MINOR_NUMBER_OFFSET; /*Minor Number*/
183 find_correct_chip = CHIP_VERSION_UNKNOWN;
191 // enable EPIT and start it with 32KHz input clock
192 writel(0x00010000, EPIT_BASE_ADDR + EPITCR);
194 // make sure reset is complete
195 while ((readl(EPIT_BASE_ADDR + EPITCR) & 0x10000) != 0) {
198 writel(0x030E0002, EPIT_BASE_ADDR + EPITCR);
199 writel(0x030E0003, EPIT_BASE_ADDR + EPITCR);
201 writel(0, EPIT_BASE_ADDR + EPITCMPR); // always compare with 0
203 if ((readw(WDOG_BASE_ADDR) & 4) != 0) {
204 // increase the WDOG timeout value to the max
205 writew(readw(WDOG_BASE_ADDR) | 0xFF00, WDOG_BASE_ADDR);
208 // Perform any platform specific initializations
211 // Set up eCos/ROM interfaces
214 // initial NAND setup
215 writel(0xFFFF0000, UNLOCK_BLK_ADD0_REG);
216 writel(0xFFFF0000, UNLOCK_BLK_ADD1_REG);
217 writel(0xFFFF0000, UNLOCK_BLK_ADD2_REG);
218 writel(0xFFFF0000, UNLOCK_BLK_ADD3_REG);
219 writel(0xFFFF0000, UNLOCK_BLK_ADD4_REG);
220 writel(0xFFFF0000, UNLOCK_BLK_ADD5_REG);
221 writel(0xFFFF0000, UNLOCK_BLK_ADD6_REG);
222 writel(0xFFFF0000, UNLOCK_BLK_ADD7_REG);
224 // unlock all the CS's
225 for (i = 0; i < 8; i++) {
226 writel(0x84 | (i << 3), NFC_WR_PROT_REG);
228 writel(0, NFC_IPC_REG);
229 #ifdef MXCFLASH_SELECT_NAND
230 nfc_setup = (nfc_setup_func_t*)mxc_nfc_soc_setup;
234 // -------------------------------------------------------------------------
235 void hal_clock_initialize(cyg_uint32 period)
239 // This routine is called during a clock interrupt.
241 // Define this if you want to ensure that the clock is perfect (i.e. does
242 // not drift). One reason to leave it turned off is that it costs some
243 // us per system clock interrupt for this maintenance.
244 #undef COMPENSATE_FOR_CLOCK_DRIFT
246 void hal_clock_reset(cyg_uint32 vector, cyg_uint32 period)
250 // Read the current value of the clock, returning the number of hardware
251 // "ticks" that have occurred (i.e. how far away the current value is from
254 // Note: The "contract" for this function is that the value is the number
255 // of hardware clocks that have happened since the last interrupt (i.e.
256 // when it was reset). This value is used to measure interrupt latencies.
257 // However, since the hardware counter runs freely, this routine computes
258 // the difference between the current clock period and the number of hardware
259 // ticks left before the next timer interrupt.
260 void hal_clock_read(cyg_uint32 *pvalue)
264 // This is to cope with the test read used by tm_basic with
265 // CYGVAR_KERNEL_COUNTERS_CLOCK_LATENCY defined; we read the count ASAP
266 // in the ISR, *before* resetting the clock. Which returns 1tick +
267 // latency if we just use plain hal_clock_read().
268 void hal_clock_latency(cyg_uint32 *pvalue)
272 unsigned int hal_timer_count(void)
274 return (0xFFFFFFFF - readl(EPIT_BASE_ADDR + EPITCNR));
277 #define WDT_MAGIC_1 0x5555
278 #define WDT_MAGIC_2 0xAAAA
279 #define MXC_WDT_WSR 0x2
281 unsigned int i2c_base_addr[] = {
285 unsigned int i2c_num = 2;
288 // Delay for some number of micro-seconds
290 void hal_delay_us(unsigned int usecs)
293 * This causes overflow.
294 * unsigned int delayCount = (usecs * 32768) / 1000000;
295 * So use the following one instead
297 unsigned int delayCount = (usecs * 512) / 15625;
299 if (delayCount == 0) {
303 // issue the service sequence instructions
304 if ((readw(WDOG_BASE_ADDR) & 4) != 0) {
305 writew(WDT_MAGIC_1, WDOG_BASE_ADDR + MXC_WDT_WSR);
306 writew(WDT_MAGIC_2, WDOG_BASE_ADDR + MXC_WDT_WSR);
309 writel(0x01, EPIT_BASE_ADDR + EPITSR); // clear the compare status bit
311 writel(delayCount, EPIT_BASE_ADDR + EPITLR);
313 while ((0x1 & readl(EPIT_BASE_ADDR + EPITSR)) == 0); // return until compare bit is set
316 // -------------------------------------------------------------------------
318 // This routine is called to respond to a hardware interrupt (IRQ). It
319 // should interrogate the hardware and return the IRQ vector number.
320 int hal_IRQ_handler(void)
322 #ifdef HAL_EXTENDED_IRQ_HANDLER
325 // Use platform specific IRQ handler, if defined
326 // Note: this macro should do a 'return' with the appropriate
327 // interrupt number if such an extended interrupt exists. The
328 // assumption is that the line after the macro starts 'normal' processing.
329 HAL_EXTENDED_IRQ_HANDLER(index);
332 return CYGNUM_HAL_INTERRUPT_NONE; // This shouldn't happen!
339 void hal_interrupt_mask(int vector)
341 // diag_printf("6hal_interrupt_mask(vector=%d) \n", vector);
342 #ifdef HAL_EXTENDED_INTERRUPT_MASK
343 // Use platform specific handling, if defined
344 // Note: this macro should do a 'return' for "extended" values of 'vector'
345 // Normal vectors are handled by code subsequent to the macro call.
346 HAL_EXTENDED_INTERRUPT_MASK(vector);
350 void hal_interrupt_unmask(int vector)
352 // diag_printf("7hal_interrupt_unmask(vector=%d) \n", vector);
354 #ifdef HAL_EXTENDED_INTERRUPT_UNMASK
355 // Use platform specific handling, if defined
356 // Note: this macro should do a 'return' for "extended" values of 'vector'
357 // Normal vectors are handled by code subsequent to the macro call.
358 HAL_EXTENDED_INTERRUPT_UNMASK(vector);
362 void hal_interrupt_acknowledge(int vector)
365 // diag_printf("8hal_interrupt_acknowledge(vector=%d) \n", vector);
366 #ifdef HAL_EXTENDED_INTERRUPT_UNMASK
367 // Use platform specific handling, if defined
368 // Note: this macro should do a 'return' for "extended" values of 'vector'
369 // Normal vectors are handled by code subsequent to the macro call.
370 HAL_EXTENDED_INTERRUPT_ACKNOWLEDGE(vector);
374 void hal_interrupt_configure(int vector, int level, int up)
377 #ifdef HAL_EXTENDED_INTERRUPT_CONFIGURE
378 // Use platform specific handling, if defined
379 // Note: this macro should do a 'return' for "extended" values of 'vector'
380 // Normal vectors are handled by code subsequent to the macro call.
381 HAL_EXTENDED_INTERRUPT_CONFIGURE(vector, level, up);
385 void hal_interrupt_set_level(int vector, int level)
388 #ifdef HAL_EXTENDED_INTERRUPT_SET_LEVEL
389 // Use platform specific handling, if defined
390 // Note: this macro should do a 'return' for "extended" values of 'vector'
391 // Normal vectors are handled by code subsequent to the macro call.
392 HAL_EXTENDED_INTERRUPT_SET_LEVEL(vector, level);
395 // Interrupt priorities are not configurable.
398 unsigned int mxc_nfc_soc_setup(unsigned int pg_sz, unsigned int io_sz, unsigned int is_mlc, unsigned int num_of_chips)
400 unsigned int nfc_config_reg3;
402 if (pg_sz == 2048 && io_sz == 8) {
403 writel(0x70202179, NFC_FLASH_CONFIG2_REG);
404 nfc_config_reg3 = 0x00160608 | ((num_of_chips - 1) << 12);
405 if (num_of_chips > 1)
406 nfc_config_reg3 |= 0x1;
407 writel(nfc_config_reg3, NFC_FLASH_CONFIG3_REG);
408 } else if (pg_sz == 4096 && io_sz == 8) {
409 // This only works for 4KB with 218 spare area size
410 writel(0x706D217A, NFC_FLASH_CONFIG2_REG); // default is 0x706D273A
411 nfc_config_reg3 = 0x00120608 | ((num_of_chips - 1) << 12);
412 if (num_of_chips > 1)
413 nfc_config_reg3 |= 0x1;
414 writel(nfc_config_reg3, NFC_FLASH_CONFIG3_REG);
416 diag_printf("not supported nand flash: pg_sz=%d, io_sz=%d\n",
424 static void show_sys_info(void)
426 if (find_correct_chip == CHIP_VERSION_UNKNOWN) {
427 diag_printf("Unrecognized chip version: 0x%x!!!\n", read_system_rev());
428 diag_printf("Assuming chip version=0x%x\n", system_rev);
429 } else if (find_correct_chip == CHIP_VERSION_NONE) {
430 diag_printf("Unrecognized chip: 0x%x!!!\n", readl(IIM_BASE_ADDR + IIM_PREV_OFF));
433 diag_printf("Reset reason: ");
434 switch (_reset_reason) {
436 diag_printf("User reset\n");
439 diag_printf("Power-on reset\n");
443 diag_printf("WDOG reset\n");
446 diag_printf("Unknown: 0x%x\n", _reset_reason);
449 if (_mxc_fis == MMC_FLASH_BOOT) {
450 diag_printf("fis/fconfig from MMC\n");
451 } else if (_mxc_fis == SPI_NOR_FLASH_BOOT) {
452 diag_printf("fis/fconfig from SPI-NOR\n");
453 } else if (_mxc_fis == NAND_FLASH_BOOT) {
454 diag_printf("fis/fconfig from NAND\n");
456 diag_printf("Use \"factive [MMC|SPI|NAND]\" to choose fis/fconfig storage\n");
459 //diag_printf("SBMR = 0x%x\n", readl(SRC_BASE_ADDR + 0x4));
460 diag_printf("Boot switch: ");
461 if (soc_sbmr->bmod == 0) {
462 diag_printf("INTERNAL\n");
463 } else if (soc_sbmr->bmod == 3){
464 diag_printf("BOOTSTRAP\n");
465 } else if (soc_sbmr->bmod == 0x1 && soc_sbmr->dir_bt_dis == 0) {
466 diag_printf("TEST EXEC\n");
468 diag_printf("UNKNOWN\n");
471 if (soc_sbmr->bt_mem_ctl == 0) {
472 diag_printf("WEIM: ");
473 if (soc_sbmr->bt_mem_type == 0) {
475 } else if (soc_sbmr->bt_mem_type == 2) {
476 diag_printf("ONE NAND");
478 diag_printf("UNKNOWN");
480 } else if (soc_sbmr->bt_mem_ctl == 1) {
481 diag_printf("NAND: ADDR CYCLES:");
482 if (soc_sbmr->bt_mem_type == 0) {
484 } else if (soc_sbmr->bt_mem_type == 1) {
486 } else if (soc_sbmr->bt_mem_type == 2) {
489 diag_printf("UNKNOWN: ");
491 if (soc_sbmr->bt_ecc_sel == 0) {
492 diag_printf("SLC: ");
494 diag_printf("MLC: ");
496 if (soc_sbmr->bt_spare_size == 0) {
497 diag_printf("128B spare (4-bit ECC): ");
499 diag_printf("218B spare (8-bit ECC): ");
501 diag_printf("PAGE SIZE: ");
502 if (soc_sbmr->bt_page_size == 0) {
503 diag_printf("512: ");
504 } else if (soc_sbmr->bt_page_size == 1) {
506 } else if (soc_sbmr->bt_page_size == 2) {
509 diag_printf("UNKNOWN: ");
511 diag_printf("BUS WIDTH: ");
512 if (soc_sbmr->bt_bus_width == 0) {
517 } else if (soc_sbmr->bt_mem_ctl == 3) {
518 diag_printf("EXPANSION: ");
519 if (soc_sbmr->bt_mem_type == 0) {
520 diag_printf("SD/MMC-%d", soc_sbmr->bt_sdmmc_src);
521 } else if (soc_sbmr->bt_mem_type == 2) {
522 diag_printf("I2C-NOR: ");
523 if (soc_sbmr->bt_sdmmc_src == 0) {
524 diag_printf("I2C-1");
525 } else if (soc_sbmr->bt_sdmmc_src == 1) {
526 diag_printf("I2C-2");
527 } else if (soc_sbmr->bt_sdmmc_src == 2) {
528 diag_printf("HS-I2C");
530 diag_printf("UNKNOWN");
532 } else if (soc_sbmr->bt_mem_type == 3) {
533 diag_printf("SPI-NOR: ");
534 if (soc_sbmr->bt_sdmmc_src == 0) {
535 diag_printf("eCSPI1");
536 } else if (soc_sbmr->bt_sdmmc_src == 1) {
537 diag_printf("eCSPI2");
538 } else if (soc_sbmr->bt_sdmmc_src == 2) {
541 diag_printf("UNKNOWN");
544 diag_printf("UNKNOWN");
547 diag_printf("UNKNOWN");
552 RedBoot_init(show_sys_info, RedBoot_INIT_LAST);