1 //==========================================================================
5 // HAL misc board support code for ARM9/AAED2000
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
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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.
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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 //==========================================================================
41 //#####DESCRIPTIONBEGIN####
44 // Contributors: hmt, Travis C. Furrer <furrer@mit.edu>, jskov
46 // Purpose: HAL board support
47 // Description: Implementations of HAL board interfaces
49 //####DESCRIPTIONEND####
51 //========================================================================*/
53 #include <pkgconf/hal.h>
54 #include <pkgconf/system.h>
55 #include CYGBLD_HAL_PLATFORM_H
57 #include <cyg/infra/cyg_type.h> // base types
58 #include <cyg/infra/cyg_trac.h> // tracing macros
59 #include <cyg/infra/cyg_ass.h> // assertion macros
61 #include <cyg/hal/hal_io.h> // IO macros
62 #include <cyg/hal/hal_arch.h> // Register state info
63 #include <cyg/hal/hal_diag.h>
64 #include <cyg/hal/hal_intr.h> // Interrupt names
65 #include <cyg/hal/hal_cache.h>
66 #include <cyg/hal/aaed2000.h> // Platform specifics
68 #include <cyg/infra/diag.h> // diag_printf
70 #include <string.h> // memset
73 // -------------------------------------------------------------------------
74 // MMU initialization:
76 // These structures are laid down in memory to define the translation
81 * ARM Translation Table Base Bit Masks */
82 #define ARM_TRANSLATION_TABLE_MASK 0xFFFFC000
85 * ARM Domain Access Control Bit Masks
87 #define ARM_ACCESS_TYPE_NO_ACCESS(domain_num) (0x0 << (domain_num)*2)
88 #define ARM_ACCESS_TYPE_CLIENT(domain_num) (0x1 << (domain_num)*2)
89 #define ARM_ACCESS_TYPE_MANAGER(domain_num) (0x3 << (domain_num)*2)
91 struct ARM_MMU_FIRST_LEVEL_FAULT {
95 #define ARM_MMU_FIRST_LEVEL_FAULT_ID 0x0
97 struct ARM_MMU_FIRST_LEVEL_PAGE_TABLE {
102 int base_address : 23;
104 #define ARM_MMU_FIRST_LEVEL_PAGE_TABLE_ID 0x1
106 struct ARM_MMU_FIRST_LEVEL_SECTION {
115 int base_address : 12;
117 #define ARM_MMU_FIRST_LEVEL_SECTION_ID 0x2
119 struct ARM_MMU_FIRST_LEVEL_RESERVED {
123 #define ARM_MMU_FIRST_LEVEL_RESERVED_ID 0x3
125 #define ARM_MMU_FIRST_LEVEL_DESCRIPTOR_ADDRESS(ttb_base, table_index) \
126 (unsigned long *)((unsigned long)(ttb_base) + ((table_index) << 2))
128 #define ARM_FIRST_LEVEL_PAGE_TABLE_SIZE 0x4000
130 #define ARM_MMU_SECTION(ttb_base, actual_base, virtual_base, \
131 cacheable, bufferable, perm) \
133 register union ARM_MMU_FIRST_LEVEL_DESCRIPTOR desc; \
136 desc.section.id = ARM_MMU_FIRST_LEVEL_SECTION_ID; \
137 desc.section.imp = 1; \
138 desc.section.domain = 0; \
139 desc.section.c = (cacheable); \
140 desc.section.b = (bufferable); \
141 desc.section.ap = (perm); \
142 desc.section.base_address = (actual_base); \
143 *ARM_MMU_FIRST_LEVEL_DESCRIPTOR_ADDRESS(ttb_base, (virtual_base)) \
147 #define X_ARM_MMU_SECTION(abase,vbase,size,cache,buff,access) \
148 { int i; int j = abase; int k = vbase; \
149 for (i = size; i > 0 ; i--,j++,k++) \
151 ARM_MMU_SECTION(ttb_base, j, k, cache, buff, access); \
155 union ARM_MMU_FIRST_LEVEL_DESCRIPTOR {
157 struct ARM_MMU_FIRST_LEVEL_FAULT fault;
158 struct ARM_MMU_FIRST_LEVEL_PAGE_TABLE page_table;
159 struct ARM_MMU_FIRST_LEVEL_SECTION section;
160 struct ARM_MMU_FIRST_LEVEL_RESERVED reserved;
163 #define ARM_UNCACHEABLE 0
164 #define ARM_CACHEABLE 1
165 #define ARM_UNBUFFERABLE 0
166 #define ARM_BUFFERABLE 1
168 #define ARM_ACCESS_PERM_NONE_NONE 0
169 #define ARM_ACCESS_PERM_RO_NONE 0
170 #define ARM_ACCESS_PERM_RO_RO 0
171 #define ARM_ACCESS_PERM_RW_NONE 1
172 #define ARM_ACCESS_PERM_RW_RO 2
173 #define ARM_ACCESS_PERM_RW_RW 3
178 unsigned long ttb_base = AAED2000_SDRAM_PHYS_BASE + 0x4000;
182 * Set the TTB register
184 asm volatile ("mcr p15,0,%0,c2,c0,0" : : "r"(ttb_base) /*:*/);
187 * Set the Domain Access Control Register
189 i = ARM_ACCESS_TYPE_MANAGER(0) |
190 ARM_ACCESS_TYPE_NO_ACCESS(1) |
191 ARM_ACCESS_TYPE_NO_ACCESS(2) |
192 ARM_ACCESS_TYPE_NO_ACCESS(3) |
193 ARM_ACCESS_TYPE_NO_ACCESS(4) |
194 ARM_ACCESS_TYPE_NO_ACCESS(5) |
195 ARM_ACCESS_TYPE_NO_ACCESS(6) |
196 ARM_ACCESS_TYPE_NO_ACCESS(7) |
197 ARM_ACCESS_TYPE_NO_ACCESS(8) |
198 ARM_ACCESS_TYPE_NO_ACCESS(9) |
199 ARM_ACCESS_TYPE_NO_ACCESS(10) |
200 ARM_ACCESS_TYPE_NO_ACCESS(11) |
201 ARM_ACCESS_TYPE_NO_ACCESS(12) |
202 ARM_ACCESS_TYPE_NO_ACCESS(13) |
203 ARM_ACCESS_TYPE_NO_ACCESS(14) |
204 ARM_ACCESS_TYPE_NO_ACCESS(15);
205 asm volatile ("mcr p15,0,%0,c3,c0,0" : : "r"(i) /*:*/);
208 * First clear all TT entries - ie Set them to Faulting
210 memset((void *)ttb_base, 0, ARM_FIRST_LEVEL_PAGE_TABLE_SIZE);
212 /* Actual Virtual Size Attributes Function */
213 /* Base Base MB cached? buffered? access permissions */
214 /* xxx00000 xxx00000 */
215 X_ARM_MMU_SECTION(0x000, 0x600, 32, ARM_UNCACHEABLE, ARM_UNBUFFERABLE, ARM_ACCESS_PERM_RW_RW); /* Boot flash ROMspace CS0 */
216 X_ARM_MMU_SECTION(0x100, 0x100, 1, ARM_UNCACHEABLE, ARM_UNBUFFERABLE, ARM_ACCESS_PERM_RW_RW); /* Ethernet */
217 X_ARM_MMU_SECTION(0x300, 0x300, 1, ARM_UNCACHEABLE, ARM_UNBUFFERABLE, ARM_ACCESS_PERM_RW_RW); /* AAED2000 board registers */
218 X_ARM_MMU_SECTION(0x400, 0x400, 1, ARM_UNCACHEABLE, ARM_UNBUFFERABLE, ARM_ACCESS_PERM_RW_RW); /* PCMCIA slot - I/O */
219 X_ARM_MMU_SECTION(0x440, 0x440, 1, ARM_UNCACHEABLE, ARM_UNBUFFERABLE, ARM_ACCESS_PERM_RW_RW); /* PCMCIA slot - stat*/
220 X_ARM_MMU_SECTION(0x480, 0x480, 1, ARM_UNCACHEABLE, ARM_UNBUFFERABLE, ARM_ACCESS_PERM_RW_RW); /* PCMCIA slot - attribute */
221 X_ARM_MMU_SECTION(0x4C0, 0x4C0, 1, ARM_UNCACHEABLE, ARM_UNBUFFERABLE, ARM_ACCESS_PERM_RW_RW); /* PCMCIA slot - common */
222 X_ARM_MMU_SECTION(0x500, 0x500, 1, ARM_UNCACHEABLE, ARM_UNBUFFERABLE, ARM_ACCESS_PERM_RW_RW); /* CF slot - I/O */
223 X_ARM_MMU_SECTION(0x540, 0x540, 1, ARM_UNCACHEABLE, ARM_UNBUFFERABLE, ARM_ACCESS_PERM_RW_RW); /* CF slot - stat*/
224 X_ARM_MMU_SECTION(0x580, 0x580, 1, ARM_UNCACHEABLE, ARM_UNBUFFERABLE, ARM_ACCESS_PERM_RW_RW); /* CF slot - attribute */
225 X_ARM_MMU_SECTION(0x5C0, 0x5C0, 1, ARM_UNCACHEABLE, ARM_UNBUFFERABLE, ARM_ACCESS_PERM_RW_RW); /* CF slot - common */
226 X_ARM_MMU_SECTION(0x800, 0x800, 1, ARM_UNCACHEABLE, ARM_UNBUFFERABLE, ARM_ACCESS_PERM_RW_RW); /* AAEC2000 registers */
227 // DRAM is non-contiguous, laid out in weird and wonderful ways...
228 X_ARM_MMU_SECTION(0xF00, 0x000, 4, ARM_CACHEABLE, ARM_BUFFERABLE, ARM_ACCESS_PERM_RW_RW); /* SDRAM */
229 X_ARM_MMU_SECTION(0xF10, 0x004, 4, ARM_CACHEABLE, ARM_BUFFERABLE, ARM_ACCESS_PERM_RW_RW); /* SDRAM */
230 X_ARM_MMU_SECTION(0xF40, 0x008, 4, ARM_CACHEABLE, ARM_BUFFERABLE, ARM_ACCESS_PERM_RW_RW); /* SDRAM */
231 X_ARM_MMU_SECTION(0xF50, 0x00C, 4, ARM_CACHEABLE, ARM_BUFFERABLE, ARM_ACCESS_PERM_RW_RW); /* SDRAM */
232 X_ARM_MMU_SECTION(0xF80, 0x010, 4, ARM_CACHEABLE, ARM_BUFFERABLE, ARM_ACCESS_PERM_RW_RW); /* SDRAM */
233 X_ARM_MMU_SECTION(0xF90, 0x014, 4, ARM_CACHEABLE, ARM_BUFFERABLE, ARM_ACCESS_PERM_RW_RW); /* SDRAM */
234 X_ARM_MMU_SECTION(0xFC0, 0x018, 4, ARM_CACHEABLE, ARM_BUFFERABLE, ARM_ACCESS_PERM_RW_RW); /* SDRAM */
235 X_ARM_MMU_SECTION(0xFD0, 0x01C, 4, ARM_CACHEABLE, ARM_BUFFERABLE, ARM_ACCESS_PERM_RW_RW); /* SDRAM */
236 // Map in DRAM raw as well
237 X_ARM_MMU_SECTION(0xF00, 0xF00, 256, ARM_UNCACHEABLE, ARM_UNBUFFERABLE, ARM_ACCESS_PERM_RW_RW); /* Raw SDRAM */
241 // Platform specific initialization
244 plf_hardware_init(void)
246 HAL_WRITE_UINT8(AAEC_PCDR, 0x22);
247 HAL_WRITE_UINT8(AAEC_PCCDR, 0);
248 HAL_WRITE_UINT8(AAEC_PBDDR, 0x83);
249 HAL_WRITE_UINT8(AAEC_PINMUX,
250 AAEC_PINMUX_UART3CON | AAEC_PINMUX_PD0CON | AAEC_PINMUX_PE0CON);
252 // FIXME - all platform interrupt sources should be configured here
253 HAL_INTERRUPT_CONFIGURE(CYGNUM_HAL_INTERRUPT_TS, 0, 0 ); // Low pulse
254 HAL_INTERRUPT_CONFIGURE(CYGNUM_HAL_INTERRUPT_ETH, 0, 1 ); // High pulse
258 // Support for platform specific I/O channels
261 externC void lcd_comm_init(void);
266 aaed2000_KeyboardInit();
267 #ifdef CYGSEM_AAED2000_LCD_COMM
268 // Initialize I/O channel
273 // -------------------------------------------------------------------------
274 void hal_clock_initialize(cyg_uint32 period)
276 // Use timer1 for the kernel clock
277 HAL_WRITE_UINT32(AAEC_TMR_T1LOAD, period);
278 HAL_WRITE_UINT32(AAEC_TMR_T1CONTROL,
279 AAEC_TMR_TxCONTROL_ENABLE
280 | AAEC_TMR_TxCONTROL_MODE_PERIODIC
281 | AAEC_TMR_TxCONTROL_508KHZ);
283 // Unmask timer 0 interrupt
284 HAL_INTERRUPT_CONFIGURE( CYGNUM_HAL_INTERRUPT_RTC, 1, 1 );
285 HAL_INTERRUPT_UNMASK( CYGNUM_HAL_INTERRUPT_RTC );
288 // This routine is called during a clock interrupt.
289 void hal_clock_reset(cyg_uint32 vector, cyg_uint32 period)
291 // Clear pending interrupt bit
292 HAL_INTERRUPT_ACKNOWLEDGE(vector);
295 // Read the current value of the clock, returning the number of hardware
296 // "ticks" that have occurred (i.e. how far away the current value is from
299 // Note: The "contract" for this function is that the value is the number
300 // of hardware clocks that have happened since the last interrupt (i.e.
301 // when it was reset).
303 void hal_clock_read(cyg_uint32 *pvalue)
307 HAL_READ_UINT32(AAEC_TMR_T1VALUE, ctr);
308 ctr = CYGNUM_HAL_RTC_PERIOD - ctr;
313 // Delay for some number of micro-seconds
314 // Use timer #3 which runs at [fixed] 7.3728 MHz
315 // Since this is only a 16 bit counter, it may be necessary
316 // to run a loop to achieve sufficiently large delay values.
318 // Note: The 7.3728MHz value does not seem to work in practice
319 // It seems to be off by about a factor of 2.
321 void hal_delay_us(cyg_int32 usecs)
323 static struct _tmr_vals {
332 struct _tmr_vals *vals = tmr_vals;
335 while (vals->tmr_val) {
336 while (usecs >= vals->us_val) {
338 HAL_WRITE_UINT32(AAEC_TMR_T3CONTROL, 0);
339 HAL_WRITE_UINT32(AAEC_TMR_T3EOI, 0);
340 // configure for tmr_val
341 HAL_WRITE_UINT32(AAEC_TMR_T3LOAD, vals->tmr_val);
343 HAL_WRITE_UINT32(AAEC_TMR_T3CONTROL,
344 AAEC_TMR_TxCONTROL_ENABLE | AAEC_TMR_TxCONTROL_MODE_FREE);
347 HAL_READ_UINT32(AAEC_INT_RSR, state);
348 } while ((state & (1<<AAEC_INTS_T3OI)) == 0);
349 usecs -= vals->us_val;
355 // -------------------------------------------------------------------------
357 // This routine is called to respond to a hardware interrupt (IRQ). It
358 // should interrogate the hardware and return the IRQ vector number.
359 int hal_IRQ_handler(void)
361 int irq = CYGNUM_HAL_INTERRUPT_NONE;
365 HAL_READ_UINT32(AAEC_INT_SR, sr);
366 for (vec = 0; vec <= CYGNUM_HAL_INTERRUPT_BMIINTR; vec++) {
381 int gpio_int; // GPIO (F) interrupt source
382 cyg_haladdress eoi; // Acknowledge location
383 } AAED2000_INTMAP[] = {
384 { 0, 0}, // CYGNUM_HAL_INTERRUPT_TS CYGNUM_HAL_INTERRUPT_GPIO0FIQ
385 {-1, AAEC_CSC_BLEOI}, // CYGNUM_HAL_INTERRUPT_BLINT 1
386 {-1, AAEC_CSC_TEOI}, // CYGNUM_HAL_INTERRUPT_WEINT 2
387 {-1, AAEC_CSC_MCEOI}, // CYGNUM_HAL_INTERRUPT_MCINT 3
388 {-1, AAEC_COD_CDEOI}, // CYGNUM_HAL_INTERRUPT_CSINT 4
389 { 1, 0}, // CYGNUM_HAL_INTERRUPT_ETH CYGNUM_HAL_INTERRUPT_GPIO1INTR
390 { 2, 0}, // CYGNUM_HAL_INTERRUPT_PCMCIA_CD2 CYGNUM_HAL_INTERRUPT_GPIO2INTR
391 { 3, 0}, // CYGNUM_HAL_INTERRUPT_PCMCIA_CD1 CYGNUM_HAL_INTERRUPT_GPIO3INTR
392 {-1, AAEC_TMR_T1EOI}, // CYGNUM_HAL_INTERRUPT_TC1OI 8
393 {-1, AAEC_TMR_T2EOI}, // CYGNUM_HAL_INTERRUPT_TC2OI 9
394 {-1, AAEC_RTC_RTCEOI},// CYGNUM_HAL_INTERRUPT_RTCMI 10
395 {-1, AAEC_CSC_TEOI}, // CYGNUM_HAL_INTERRUPT_TINTR 11
396 {-1, 0}, // CYGNUM_HAL_INTERRUPT_UART1INTR 12
397 {-1, AAEC_UART2_UMS2EOI}, // CYGNUM_HAL_INTERRUPT_UART2INTR 13
398 {-1, 0}, // CYGNUM_HAL_INTERRUPT_LCDINTR 14
399 {-1, 0}, // CYGNUM_HAL_INTERRUPT_SSEOTI 15
400 {-1, AAEC_UART2_UMS3EOI}, // CYGNUM_HAL_INTERRUPT_UART3INTR 16
401 {-1, 0}, // CYGNUM_HAL_INTERRUPT_SCIINTR 17
402 {-1, 0}, // CYGNUM_HAL_INTERRUPT_AACINTR 18
403 {-1, 0}, // CYGNUM_HAL_INTERRUPT_MMCINTR 19
404 {-1, 0}, // CYGNUM_HAL_INTERRUPT_USBINTR 20
405 {-1, 0}, // CYGNUM_HAL_INTERRUPT_DMAINTR 21
406 {-1, AAEC_TMR_T3EOI}, // CYGNUM_HAL_INTERRUPT_TC3OI 22
407 { 4, 0}, // CYGNUM_HAL_INTERRUPT_SCI_VCCEN CYGNUM_HAL_INTERRUPT_GPIO4INTR
408 { 5, 0}, // CYGNUM_HAL_INTERRUPT_SCI_DETECT CYGNUM_HAL_INTERRUPT_GPIO5INTR
409 { 6, 0}, // CYGNUM_HAL_INTERRUPT_PCMCIA_RDY1 CYGNUM_HAL_INTERRUPT_GPIO6INTR
410 { 7, 0}, // CYGNUM_HAL_INTERRUPT_PCMCIA_RDY2 CYGNUM_HAL_INTERRUPT_GPIO7INTR
411 {-1, 0}, // CYGNUM_HAL_INTERRUPT_BMIINTR 27
414 void hal_interrupt_mask(int vector)
416 CYG_ASSERT(vector <= CYGNUM_HAL_ISR_MAX &&
417 vector >= CYGNUM_HAL_ISR_MIN , "Invalid vector");
419 if (vector <= CYGNUM_HAL_INTERRUPT_BMIINTR) {
420 HAL_WRITE_UINT32(AAEC_INT_ENC, (1 << vector));
424 void hal_interrupt_unmask(int vector)
426 CYG_ASSERT(vector <= CYGNUM_HAL_ISR_MAX &&
427 vector >= CYGNUM_HAL_ISR_MIN , "Invalid vector");
429 if (vector <= CYGNUM_HAL_INTERRUPT_BMIINTR) {
430 HAL_WRITE_UINT32(AAEC_INT_ENS, (1 << vector));
434 void hal_interrupt_acknowledge(int vector)
438 CYG_ASSERT(vector <= CYGNUM_HAL_ISR_MAX &&
439 vector >= CYGNUM_HAL_ISR_MIN , "Invalid vector");
441 if (vector <= CYGNUM_HAL_INTERRUPT_BMIINTR) {
442 // Must be cleared at the source
443 if ((eoi = AAED2000_INTMAP[vector].eoi) != 0) {
444 HAL_WRITE_UINT32(eoi, 0); // Any write clears interrupt
445 } else if ((gpio = AAED2000_INTMAP[vector].gpio_int) >= 0) {
446 // GPIO interrupts require special care
447 HAL_WRITE_UINT32(AAEC_GPIO_FEOI, (1<<gpio));
452 void hal_interrupt_configure(int vector, int level, int up)
455 CYG_ASSERT(vector <= CYGNUM_HAL_ISR_MAX &&
456 vector >= CYGNUM_HAL_ISR_MIN , "Invalid vector");
457 if (vector <= CYGNUM_HAL_INTERRUPT_BMIINTR) {
458 if ((gpio = AAED2000_INTMAP[vector].gpio_int) >= 0) {
459 // Only GPIO interrupts can be configured
460 int mask = (1<<gpio);
462 // Set type (level or edge)
463 HAL_READ_UINT32(AAEC_GPIO_INT_TYPE1, cur);
471 HAL_WRITE_UINT32(AAEC_GPIO_INT_TYPE1, cur);
472 // Set level (high/rising or low/falling)
473 HAL_READ_UINT32(AAEC_GPIO_INT_TYPE2, cur);
475 // Trigger on high/rising
478 // Trigger on low/falling
481 HAL_WRITE_UINT32(AAEC_GPIO_INT_TYPE2, cur);
482 // Enable as interrupt
483 HAL_READ_UINT32(AAEC_GPIO_INTEN, cur);
485 HAL_WRITE_UINT32(AAEC_GPIO_INTEN, cur);
490 void hal_interrupt_set_level(int vector, int level)
495 hal_virt_to_phys_address(cyg_uint32 virt)
497 cyg_uint32 phys = 0xFFFFFFFF, dram_page;
498 static cyg_uint32 _dram_map[] = {
499 0xF0000000, 0xF1000000, 0xF4000000, 0xF5000000,
500 0xF8000000, 0xF9000000, 0xFC000000, 0xFD000000
503 // Hard-wired, rather than walk the tables
504 switch ((virt & 0xF0000000) >> 28) {
506 if ((virt & 0x0E000000) == 0) {
507 dram_page = _dram_map[((virt & 0x01C00000) >> 22)];
508 phys = dram_page | virt;
514 phys = (virt & 0x0FFFFFFF);