2 * Copyright (c) 1994-1998 Mark Brinicombe.
3 * Copyright (c) 1994 Brini.
6 * This code is derived from software written for Brini by Mark Brinicombe
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 * must display the following acknowledgement:
18 * This product includes software developed by Brini.
19 * 4. The name of the company nor the name of the author may be used to
20 * endorse or promote products derived from this software without specific
21 * prior written permission.
23 * THIS SOFTWARE IS PROVIDED BY BRINI ``AS IS'' AND ANY EXPRESS OR IMPLIED
24 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
25 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
26 * IN NO EVENT SHALL BRINI OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
27 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
28 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
29 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35 * from: FreeBSD: //depot/projects/arm/src/sys/arm/at91/kb920x_machdep.c, rev 45
39 #include "opt_platform.h"
41 #include <sys/cdefs.h>
42 __FBSDID("$FreeBSD$");
44 #define _ARM32_BUS_DMA_PRIVATE
45 #include <sys/param.h>
46 #include <sys/systm.h>
52 #include <machine/bus.h>
53 #include <machine/frame.h> /* For trapframe_t, used in <machine/machdep.h> */
54 #include <machine/machdep.h>
55 #include <machine/pmap.h>
57 #include <arm/mv/mvreg.h> /* XXX */
58 #include <arm/mv/mvvar.h> /* XXX eventually this should be eliminated */
59 #include <arm/mv/mvwin.h>
61 #include <dev/fdt/fdt_common.h>
63 static int platform_mpp_init(void);
65 #define MPP_PIN_MAX 68
66 #define MPP_PIN_CELLS 2
67 #define MPP_PINS_PER_REG 8
68 #define MPP_SEL(pin,func) (((func) & 0xf) << \
69 (((pin) % MPP_PINS_PER_REG) * 4))
72 platform_mpp_init(void)
74 pcell_t pinmap[MPP_PIN_MAX * MPP_PIN_CELLS];
76 uint32_t ctrl_val, ctrl_offset;
80 pcell_t pin_cells, *pinmap_ptr, pin_count;
82 int par_addr_cells, par_size_cells;
83 int tuple_size, tuples, rv, pins, i, j;
84 int mpp_pin, mpp_function;
87 * Try to access the MPP node directly i.e. through /aliases/mpp.
89 if ((node = OF_finddevice("mpp")) != -1)
90 if (fdt_is_compatible(node, "mrvl,mpp"))
93 * Find the node the long way.
95 if ((node = OF_finddevice("/")) == -1)
98 if ((node = fdt_find_compatible(node, "simple-bus", 0)) == 0)
101 if ((node = fdt_find_compatible(node, "mrvl,mpp", 0)) == 0)
103 * No MPP node. Fall back to how MPP got set by the
104 * first-stage loader and try to continue booting.
109 * Process 'reg' prop.
111 if ((rv = fdt_addrsize_cells(OF_parent(node), &par_addr_cells,
112 &par_size_cells)) != 0)
115 tuple_size = sizeof(pcell_t) * (par_addr_cells + par_size_cells);
116 len = OF_getprop(node, "reg", reg, sizeof(reg));
117 tuples = len / tuple_size;
122 * Get address/size. XXX we assume only the first 'reg' tuple is used.
124 rv = fdt_data_to_res(reg, par_addr_cells, par_size_cells,
128 start += fdt_immr_va;
131 * Process 'pin-count' and 'pin-map' props.
133 if (OF_getprop(node, "pin-count", &pin_count, sizeof(pin_count)) <= 0)
135 pin_count = fdt32_to_cpu(pin_count);
136 if (pin_count > MPP_PIN_MAX)
139 if (OF_getprop(node, "#pin-cells", &pin_cells, sizeof(pin_cells)) <= 0)
140 pin_cells = MPP_PIN_CELLS;
141 pin_cells = fdt32_to_cpu(pin_cells);
142 if (pin_cells > MPP_PIN_CELLS)
144 tuple_size = sizeof(pcell_t) * pin_cells;
146 bzero(pinmap, sizeof(pinmap));
147 len = OF_getprop(node, "pin-map", pinmap, sizeof(pinmap));
150 if (len % tuple_size)
152 pins = len / tuple_size;
153 if (pins > pin_count)
156 * Fill out a "mpp[pin] => function" table. All pins unspecified in
157 * the 'pin-map' property are defaulted to 0 function i.e. GPIO.
159 bzero(mpp, sizeof(mpp));
161 for (i = 0; i < pins; i++) {
162 mpp_pin = fdt32_to_cpu(*pinmap_ptr);
163 mpp_function = fdt32_to_cpu(*(pinmap_ptr + 1));
164 mpp[mpp_pin] = mpp_function;
165 pinmap_ptr += pin_cells;
169 * Prepare and program MPP control register values.
172 for (i = 0; i < pin_count;) {
175 for (j = 0; j < MPP_PINS_PER_REG; j++) {
176 if (i + j == pin_count - 1)
178 ctrl_val |= MPP_SEL(i + j, mpp[i + j]);
180 i += MPP_PINS_PER_REG;
181 bus_space_write_4(fdtbus_bs_tag, start, ctrl_offset,
184 #if defined(SOC_MV_ORION)
186 * Third MPP reg on Orion SoC is placed
187 * non-linearly (with different offset).
189 if (i == (2 * MPP_PINS_PER_REG))
200 initarm_lastaddr(void)
203 if (fdt_immr_addr(MV_BASE) != 0)
206 /* Platform-specific initialisation */
207 return (fdt_immr_va - ARM_NOCACHE_KVA_SIZE);
211 initarm_gpio_init(void)
215 * Re-initialise MPP. It is important to call this prior to using
216 * console as the physical connection can be routed via MPP.
218 if (platform_mpp_init() != 0)
223 initarm_late_init(void)
226 * Re-initialise decode windows
228 #if !defined(SOC_MV_FREY)
229 if (soc_decode_win() != 0)
230 printf("WARNING: could not re-initialise decode windows! "
231 "Running with existing settings...\n");
233 /* Disable watchdog and timers */
234 write_cpu_ctrl(CPU_TIMERS_BASE + CPU_TIMER_CONTROL, 0);
238 #define FDT_DEVMAP_MAX (MV_WIN_CPU_MAX + 2)
239 static struct pmap_devmap fdt_devmap[FDT_DEVMAP_MAX] = {
244 platform_sram_devmap(struct pmap_devmap *map)
246 #if !defined(SOC_MV_ARMADAXP)
247 phandle_t child, root;
252 if ((child = OF_finddevice("/sram")) != 0)
253 if (fdt_is_compatible(child, "mrvl,cesa-sram") ||
254 fdt_is_compatible(child, "mrvl,scratchpad"))
257 if ((root = OF_finddevice("/")) == 0)
260 if ((child = fdt_find_compatible(root, "mrvl,cesa-sram", 0)) == 0 &&
261 (child = fdt_find_compatible(root, "mrvl,scratchpad", 0)) == 0)
265 if (fdt_regsize(child, &base, &size) != 0)
268 map->pd_va = MV_CESA_SRAM_BASE; /* XXX */
271 map->pd_prot = VM_PROT_READ | VM_PROT_WRITE;
272 map->pd_cache = PTE_NOCACHE;
282 * Supply a default do-nothing implementation of fdt_pci_devmap() via a weak
283 * alias. Many Marvell platforms don't support a PCI interface, but to support
284 * those that do, we end up with a reference to this function below, in
285 * platform_devmap_init(). If "device pci" appears in the kernel config, the
286 * real implementation of this function in dev/fdt/fdt_pci.c overrides the weak
287 * alias defined here.
289 int mv_default_fdt_pci_devmap(phandle_t node, struct pmap_devmap *devmap,
290 vm_offset_t io_va, vm_offset_t mem_va);
292 mv_default_fdt_pci_devmap(phandle_t node, struct pmap_devmap *devmap,
293 vm_offset_t io_va, vm_offset_t mem_va)
298 __weak_reference(mv_default_fdt_pci_devmap, fdt_pci_devmap);
301 * XXX: When device entry in devmap has pd_size smaller than section size,
302 * system will freeze during initialization
306 * Construct pmap_devmap[] with DT-derived config data.
309 platform_devmap_init(void)
311 phandle_t root, child;
317 pmap_devmap_bootstrap_table = &fdt_devmap[0];
322 fdt_devmap[i].pd_va = fdt_immr_va;
323 fdt_devmap[i].pd_pa = fdt_immr_pa;
324 fdt_devmap[i].pd_size = fdt_immr_size;
325 fdt_devmap[i].pd_prot = VM_PROT_READ | VM_PROT_WRITE;
326 fdt_devmap[i].pd_cache = PTE_NOCACHE;
332 if (i < FDT_DEVMAP_MAX)
333 if (platform_sram_devmap(&fdt_devmap[i]) == 0)
338 * PCI range(s) and localbus.
340 if ((root = OF_finddevice("/")) == -1)
342 for (child = OF_child(root); child != 0; child = OF_peer(child)) {
343 if (fdt_is_type(child, "pci") || fdt_is_type(child, "pciep")) {
345 * Check space: each PCI node will consume 2 devmap
348 if (i + 1 >= FDT_DEVMAP_MAX)
352 * XXX this should account for PCI and multiple ranges
355 if (fdt_pci_devmap(child, &fdt_devmap[i], MV_PCI_VA_IO_BASE,
356 MV_PCI_VA_MEM_BASE) != 0)
361 if (fdt_is_compatible(child, "mrvl,lbc")) {
362 /* Check available space */
363 if (OF_getprop(child, "bank-count", (void *)&bank_count,
364 sizeof(bank_count)) <= 0)
365 /* If no property, use default value */
368 bank_count = fdt32_to_cpu(bank_count);
370 if ((i + bank_count) >= FDT_DEVMAP_MAX)
373 /* Add all localbus ranges to device map */
376 if (fdt_localbus_devmap(child, &fdt_devmap[i],
377 (int)bank_count, &num_mapped) != 0)
387 if ((child = OF_finddevice("sram")) != -1)
388 if (fdt_is_compatible(child, "mrvl,cesa-sram"))
391 if ((child = fdt_find_compatible(root, "mrvl,cesa-sram", 0)) == 0)
392 /* No CESA SRAM node. */
395 if (i >= FDT_DEVMAP_MAX)
398 if (fdt_regsize(child, &base, &size) != 0)
401 fdt_devmap[i].pd_va = MV_CESA_SRAM_BASE; /* XXX */
402 fdt_devmap[i].pd_pa = base;
403 fdt_devmap[i].pd_size = size;
404 fdt_devmap[i].pd_prot = VM_PROT_READ | VM_PROT_WRITE;
405 fdt_devmap[i].pd_cache = PTE_NOCACHE;
410 struct arm32_dma_range *
411 bus_dma_get_range(void)
418 bus_dma_get_range_nb(void)
424 #if defined(CPU_MV_PJ4B)
428 DB_SHOW_COMMAND(cp15, db_show_cp15)
432 __asm __volatile("mrc p15, 0, %0, c0, c0, 0" : "=r" (reg));
433 db_printf("Cpu ID: 0x%08x\n", reg);
434 __asm __volatile("mrc p15, 0, %0, c0, c0, 1" : "=r" (reg));
435 db_printf("Current Cache Lvl ID: 0x%08x\n",reg);
437 __asm __volatile("mrc p15, 0, %0, c1, c0, 0" : "=r" (reg));
438 db_printf("Ctrl: 0x%08x\n",reg);
439 __asm __volatile("mrc p15, 0, %0, c1, c0, 1" : "=r" (reg));
440 db_printf("Aux Ctrl: 0x%08x\n",reg);
442 __asm __volatile("mrc p15, 0, %0, c0, c1, 0" : "=r" (reg));
443 db_printf("Processor Feat 0: 0x%08x\n", reg);
444 __asm __volatile("mrc p15, 0, %0, c0, c1, 1" : "=r" (reg));
445 db_printf("Processor Feat 1: 0x%08x\n", reg);
446 __asm __volatile("mrc p15, 0, %0, c0, c1, 2" : "=r" (reg));
447 db_printf("Debug Feat 0: 0x%08x\n", reg);
448 __asm __volatile("mrc p15, 0, %0, c0, c1, 3" : "=r" (reg));
449 db_printf("Auxiliary Feat 0: 0x%08x\n", reg);
450 __asm __volatile("mrc p15, 0, %0, c0, c1, 4" : "=r" (reg));
451 db_printf("Memory Model Feat 0: 0x%08x\n", reg);
452 __asm __volatile("mrc p15, 0, %0, c0, c1, 5" : "=r" (reg));
453 db_printf("Memory Model Feat 1: 0x%08x\n", reg);
454 __asm __volatile("mrc p15, 0, %0, c0, c1, 6" : "=r" (reg));
455 db_printf("Memory Model Feat 2: 0x%08x\n", reg);
456 __asm __volatile("mrc p15, 0, %0, c0, c1, 7" : "=r" (reg));
457 db_printf("Memory Model Feat 3: 0x%08x\n", reg);
459 __asm __volatile("mrc p15, 1, %0, c15, c2, 0" : "=r" (reg));
460 db_printf("Aux Func Modes Ctrl 0: 0x%08x\n",reg);
461 __asm __volatile("mrc p15, 1, %0, c15, c2, 1" : "=r" (reg));
462 db_printf("Aux Func Modes Ctrl 1: 0x%08x\n",reg);
464 __asm __volatile("mrc p15, 1, %0, c15, c12, 0" : "=r" (reg));
465 db_printf("CPU ID code extension: 0x%08x\n",reg);
468 DB_SHOW_COMMAND(vtop, db_show_vtop)
473 __asm __volatile("mcr p15, 0, %0, c7, c8, 0" : : "r" (addr));
474 __asm __volatile("mrc p15, 0, %0, c7, c4, 0" : "=r" (reg));
475 db_printf("Physical address reg: 0x%08x\n",reg);
477 db_printf("show vtop <virt_addr>\n");
480 #endif /* CPU_MV_PJ4B */