1/*-
2 * Copyright (C) 2006 Semihalf, Marian Balakowicz <m8@semihalf.com>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright

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74 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
75 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
76 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
77 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
78 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
79 */
80
81#include <sys/cdefs.h>
82__FBSDID("$FreeBSD: head/sys/powerpc/booke/machdep.c 209908 2010-07-11 21:08:29Z raj $");
83
84#include "opt_compat.h"
85#include "opt_ddb.h"
86#include "opt_kstack_pages.h"
87#include "opt_msgbuf.h"
88
89#include <sys/cdefs.h>
90#include <sys/types.h>

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125#include <machine/spr.h>
126#include <machine/hid.h>
127#include <machine/psl.h>
128#include <machine/trap.h>
129#include <machine/md_var.h>
130#include <machine/mmuvar.h>
131#include <machine/sigframe.h>
132#include <machine/metadata.h>
133#include <machine/platform.h>
134
135#include <sys/linker.h>
136#include <sys/reboot.h>
137
138#include <dev/fdt/fdt_common.h>
139#include <dev/ofw/openfirm.h>
140
141#include <powerpc/mpc85xx/mpc85xx.h>
142
143#ifdef DDB
144extern vm_offset_t ksym_start, ksym_end;
145#endif
146
147#ifdef DEBUG
148#define debugf(fmt, args...) printf(fmt, ##args)

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165
166struct kva_md_info kmi;
167struct pcpu __pcpu[MAXCPU];
168struct trapframe frame0;
169int cold = 1;
170long realmem = 0;
171long Maxmem = 0;
172
173char machine[] = "powerpc";
174SYSCTL_STRING(_hw, HW_MACHINE, machine, CTLFLAG_RD, machine, 0, "");
175
176int cacheline_size = 32;
177
178SYSCTL_INT(_machdep, CPU_CACHELINE, cacheline_size,
179 CTLFLAG_RD, &cacheline_size, 0, "");
180
181int hw_direct_map = 0;
182
183static void cpu_e500_startup(void *);
184SYSINIT(cpu, SI_SUB_CPU, SI_ORDER_FIRST, cpu_e500_startup, NULL);
185
186void print_kernel_section_addr(void);
187void print_kenv(void);
188u_int e500_init(u_int32_t, u_int32_t, void *);
189
190static void
191cpu_e500_startup(void *dummy)
192{
193 int indx, size;
194

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252 debugf(" kern_envp = 0x%08x\n", (u_int32_t)kern_envp);
253
254 len = 0;
255 for (cp = kern_envp; cp != NULL; cp = kenv_next(cp))
256 debugf(" %x %s\n", (u_int32_t)cp, cp);
257}
258
259void
260print_kernel_section_addr(void)
261{
262
263 debugf("kernel image addresses:\n");
264 debugf(" kernel_text = 0x%08x\n", (uint32_t)kernel_text);
265 debugf(" _etext (sdata) = 0x%08x\n", (uint32_t)_etext);
266 debugf(" _edata = 0x%08x\n", (uint32_t)_edata);
267 debugf(" __sbss_start = 0x%08x\n", (uint32_t)__sbss_start);
268 debugf(" __sbss_end = 0x%08x\n", (uint32_t)__sbss_end);
269 debugf(" __sbss_start = 0x%08x\n", (uint32_t)__bss_start);
270 debugf(" _end = 0x%08x\n", (uint32_t)_end);
271}
272
273u_int
274e500_init(u_int32_t startkernel, u_int32_t endkernel, void *mdp)
275{
276 struct pcpu *pc;
277 void *kmdp;
278 vm_offset_t dtbp, end;
279 uint32_t csr;
280
281 kmdp = NULL;
282
283 end = endkernel;
284 dtbp = (vm_offset_t)NULL;
285
286 /*
287 * Parse metadata and fetch parameters.
288 */
289 if (mdp != NULL) {
290 preload_metadata = mdp;
291 kmdp = preload_search_by_type("elf kernel");
292 if (kmdp != NULL) {
293 boothowto = MD_FETCH(kmdp, MODINFOMD_HOWTO, int);
294 kern_envp = MD_FETCH(kmdp, MODINFOMD_ENVP, char *);
295 dtbp = MD_FETCH(kmdp, MODINFOMD_DTBP, vm_offset_t);
296 end = MD_FETCH(kmdp, MODINFOMD_KERNEND, vm_offset_t);
297#ifdef DDB
298 ksym_start = MD_FETCH(kmdp, MODINFOMD_SSYM, uintptr_t);
299 ksym_end = MD_FETCH(kmdp, MODINFOMD_ESYM, uintptr_t);
300#endif
301 }
302 } else {
303 /*
304 * We should scream but how? Cannot even output anything...
305 */
306
307 /*
308 * FIXME add return value and handle in the locore so we can
309 * return to the loader maybe? (this seems not very easy to
310 * restore everything as the TLB have all been reprogrammed
311 * in the locore etc...)
312 */
313 while (1);
314 }
315
316 if (OF_install(OFW_FDT, 0) == FALSE)
317 while (1);
318
319 if (OF_init((void *)dtbp) != 0)
320 while (1);
321
322 if (fdt_immr_addr() != 0)
323 while (1);
324
325 OF_interpret("perform-fixup", 0);
326
327 /* Initialize TLB1 handling */
328 tlb1_init(fdt_immr_pa);
329
330 /* Reset Time Base */
331 mttb(0);
332
333 /* Init params/tunables that can be overridden by the loader. */
334 init_param1();
335
336 /* Start initializing proc0 and thread0. */

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361 debugf(" HID0 = 0x%08x\n", mfspr(SPR_HID0));
362 debugf(" HID1 = 0x%08x\n", mfspr(SPR_HID1));
363 debugf(" BUCSR = 0x%08x\n", mfspr(SPR_BUCSR));
364
365 __asm __volatile("msync; isync");
366 csr = ccsr_read4(OCP85XX_L2CTL);
367 debugf(" L2CTL = 0x%08x\n", csr);
368
369 debugf(" dtbp = 0x%08x\n", (uint32_t)dtbp);
370
371 print_kernel_section_addr();
372 print_kenv();
373 //tlb1_print_entries();
374 //tlb1_print_tlbentries();
375
376 kdb_init();
377
378#ifdef KDB

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