--- /dev/null
+/*
+ * PROM interface support
+ * Copyright 1996 The Australian National University.
+ * Copyright 1996 Fujitsu Laboratories Limited
+ * Copyright 1999 Pete A. Zaitcev
+ * This software may be distributed under the terms of the Gnu
+ * Public License version 2 or later
+ */
+
+#include <stdarg.h>
+
+#include "openprom.h"
+#include "config.h"
+#include "libopenbios/bindings.h"
+#include "drivers/drivers.h"
+#include "libopenbios/sys_info.h"
+#include "boot.h"
+#include "romvec.h"
+
+#ifdef CONFIG_DEBUG_OBP
+#define DPRINTF(fmt, args...) \
+ do { printk(fmt , ##args); } while (0)
+#else
+#define DPRINTF(fmt, args...)
+#endif
+
+char obp_stdin, obp_stdout;
+const char *obp_stdin_path, *obp_stdout_path;
+
+struct linux_arguments_v0 obp_arg;
+const char *bootpath;
+static const struct linux_arguments_v0 * const obp_argp = &obp_arg;
+
+static void (*sync_hook)(void);
+
+static struct linux_romvec romvec0;
+
+static void doublewalk(__attribute__((unused)) unsigned int ptab1,
+ __attribute__((unused)) unsigned int va)
+{
+}
+
+int obp_nextnode(int node)
+{
+ int peer;
+
+ PUSH(node);
+ fword("peer");
+ peer = POP();
+ DPRINTF("obp_nextnode(0x%x) = 0x%x\n", node, peer);
+
+ return peer;
+}
+
+int obp_child(int node)
+{
+ int child;
+
+ PUSH(node);
+ fword("child");
+ child = POP();
+ DPRINTF("obp_child(0x%x) = 0x%x\n", node, child);
+
+ return child;
+}
+
+int obp_proplen(int node, const char *name)
+{
+ int notfound;
+
+ if (!node) {
+ DPRINTF("obp_proplen(0x0, %s) = -1\n", name);
+ return -1;
+ }
+
+ push_str(name);
+ PUSH(node);
+ fword("get-package-property");
+ notfound = POP();
+
+ if (notfound) {
+ DPRINTF("obp_proplen(0x%x, %s) (not found)\n", node, name);
+
+ return -1;
+ } else {
+ int len;
+
+ len = POP();
+ (void) POP();
+ DPRINTF("obp_proplen(0x%x, %s) = %d\n", node, name, len);
+
+ return len;
+ }
+}
+
+#ifdef CONFIG_DEBUG_OBP
+static int looks_like_string(const char *str, int len)
+{
+ int i;
+ int ret = (str[len-1] == '\0');
+ for (i = 0; i < len-1 && ret; i++)
+ {
+ int ch = str[i] & 0xFF;
+ if (ch < 0x20 || ch > 0x7F)
+ ret = 0;
+ }
+ return ret;
+}
+#endif
+
+int obp_getprop(int node, const char *name, char *value)
+{
+ int notfound, found;
+ int len;
+ const char *str;
+
+ if (!node) {
+ DPRINTF("obp_getprop(0x0, %s) = -1\n", name);
+ return -1;
+ }
+
+ if (!name) {
+ // NULL name means get first property
+ push_str("");
+ PUSH(node);
+ fword("next-property");
+ found = POP();
+ if (found) {
+ len = POP();
+ str = (char *) POP();
+ DPRINTF("obp_getprop(0x%x, NULL) = %s\n", node, str);
+
+ return (int)str;
+ }
+ DPRINTF("obp_getprop(0x%x, NULL) (not found)\n", node);
+
+ return -1;
+ } else {
+ push_str(name);
+ PUSH(node);
+ fword("get-package-property");
+ notfound = POP();
+ }
+ if (notfound) {
+ DPRINTF("obp_getprop(0x%x, %s) (not found)\n", node, name);
+
+ return -1;
+ } else {
+ len = POP();
+ str = (char *) POP();
+ if (len > 0)
+ memcpy(value, str, len);
+ else
+ str = "NULL";
+
+#ifdef CONFIG_DEBUG_OBP
+ if (looks_like_string(str, len)) {
+ DPRINTF("obp_getprop(0x%x, %s) = %s\n", node, name, str);
+ } else {
+ int i;
+ DPRINTF("obp_getprop(0x%x, %s) = ", node, name);
+ for (i = 0; i < len; i++) {
+ DPRINTF("%02x%s", str[i] & 0xFF,
+ (len == 4 || i == len-1) ? "" : " ");
+ }
+ DPRINTF("\n");
+ }
+#endif
+
+ return len;
+ }
+}
+
+const char *obp_nextprop(int node, const char *name)
+{
+ int found;
+
+ if (!name || *name == '\0') {
+ // NULL name means get first property
+ push_str("");
+ name = "NULL";
+ } else {
+ push_str(name);
+ }
+ PUSH(node);
+ fword("next-property");
+ found = POP();
+ if (!found) {
+ DPRINTF("obp_nextprop(0x%x, %s) (not found)\n", node, name);
+
+ return "";
+ } else {
+ char *str;
+
+ POP(); /* len */
+ str = (char *) POP();
+
+ DPRINTF("obp_nextprop(0x%x, %s) = %s\n", node, name, str);
+
+ return str;
+ }
+}
+
+int obp_setprop(__attribute__((unused)) int node,
+ __attribute__((unused)) const char *name,
+ __attribute__((unused)) char *value,
+ __attribute__((unused)) int len)
+{
+ DPRINTF("obp_setprop(0x%x, %s) = %s (%d)\n", node, name, value, len);
+
+ return -1;
+}
+
+static const struct linux_nodeops nodeops0 = {
+ obp_nextnode_handler, /* int (*no_nextnode)(int node); */
+ obp_child_handler, /* int (*no_child)(int node); */
+ obp_proplen_handler, /* int (*no_proplen)(int node, char *name); */
+ obp_getprop_handler, /* int (*no_getprop)(int node,char *name,char *val); */
+ obp_setprop_handler, /* int (*no_setprop)(int node, char *name,
+ char *val, int len); */
+ obp_nextprop_handler /* char * (*no_nextprop)(int node, char *name); */
+};
+
+int obp_nbgetchar(void)
+{
+ return getchar();
+}
+
+int obp_nbputchar(int ch)
+{
+ putchar(ch);
+
+ return 0;
+}
+
+void obp_putstr(char *str, int len)
+{
+ PUSH(pointer2cell(str));
+ PUSH(len);
+ fword("type");
+}
+
+void obp_printf(const char *fmt, ...)
+{
+ va_list ap;
+
+ va_start(ap, fmt);
+ printk(fmt, ap);
+ va_end(ap);
+}
+
+void obp_reboot(char *str)
+{
+ printk("rebooting (%s)\n", str);
+ *reset_reg = 1;
+ printk("reboot failed\n");
+ for (;;) {}
+}
+
+void obp_abort(void)
+{
+ printk("abort, power off\n");
+ *power_reg = 1;
+ printk("power off failed\n");
+ for (;;) {}
+}
+
+void obp_halt(void)
+{
+ printk("halt, power off\n");
+ *power_reg = 1;
+ printk("power off failed\n");
+ for (;;) {}
+}
+
+int obp_devopen(char *str)
+{
+ int ret;
+
+ push_str(str);
+ fword("open-dev");
+ ret = POP();
+ DPRINTF("obp_devopen(%s) = 0x%x\n", str, ret);
+
+ return ret;
+}
+
+int obp_devclose(int dev_desc)
+{
+ int ret = 1;
+
+ PUSH(dev_desc);
+ fword("close-dev");
+
+ DPRINTF("obp_devclose(0x%x) = %d\n", dev_desc, ret);
+
+ return ret;
+}
+
+int obp_rdblkdev(int dev_desc, int num_blks, int offset, char *buf)
+{
+ int ret, hi, lo, bs;
+
+ bs = 512;
+ hi = ((uint64_t)offset * bs) >> 32;
+ lo = ((uint64_t)offset * bs) & 0xffffffff;
+
+ ret = obp_devseek(dev_desc, hi, lo);
+
+ ret = obp_devread(dev_desc, buf, num_blks * bs) / bs;
+
+ DPRINTF("obp_rdblkdev(fd 0x%x, num_blks %d, offset %d (hi %d lo %d), buf 0x%x) = %d\n", dev_desc, num_blks, offset, hi, lo, (int)buf, ret);
+
+ return ret;
+}
+
+int obp_devread(int dev_desc, char *buf, int nbytes)
+{
+ int ret;
+
+ PUSH((int)buf);
+ PUSH(nbytes);
+ push_str("read");
+ PUSH(dev_desc);
+ fword("$call-method");
+ ret = POP();
+
+ DPRINTF("obp_devread(fd 0x%x, buf 0x%x, nbytes %d) = %d\n", dev_desc, (int)buf, nbytes, ret);
+
+ return ret;
+}
+
+int obp_devwrite(int dev_desc, char *buf, int nbytes)
+{
+#ifdef CONFIG_DEBUG_OBP_DEVWRITE /* disabled, makes too much noise */
+ int ret;
+#endif
+
+ PUSH((int)buf);
+ PUSH(nbytes);
+ push_str("write");
+ PUSH(dev_desc);
+ fword("$call-method");
+#ifdef CONFIG_DEBUG_OBP_DEVWRITE
+ ret = POP();
+ DPRINTF("obp_devwrite(fd 0x%x, buf %s, nbytes %d) = %d\n", dev_desc, buf, nbytes, ret);
+#else
+ POP();
+#endif
+
+ return nbytes;
+}
+
+int obp_devseek(int dev_desc, int hi, int lo)
+{
+ int ret;
+
+ PUSH(lo);
+ PUSH(hi);
+ push_str("seek");
+ PUSH(dev_desc);
+ fword("$call-method");
+ ret = POP();
+
+ DPRINTF("obp_devseek(fd 0x%x, hi %d, lo %d) = %d\n", dev_desc, hi, lo, ret);
+
+ return ret;
+}
+
+int obp_inst2pkg(int dev_desc)
+{
+ int ret;
+
+ PUSH(dev_desc);
+ fword("ihandle>non-interposed-phandle");
+ ret = POP();
+
+ DPRINTF("obp_inst2pkg(fd 0x%x) = 0x%x\n", dev_desc, ret);
+
+ return ret;
+}
+
+int obp_cpustart(__attribute__((unused))unsigned int whichcpu,
+ __attribute__((unused))int ctxtbl_ptr,
+ __attribute__((unused))int thiscontext,
+ __attribute__((unused))char *prog_counter)
+{
+ int cpu, found;
+ struct linux_prom_registers *smp_ctable = (void *)ctxtbl_ptr;
+
+ DPRINTF("obp_cpustart: cpu %d, ctxptr 0x%x, ctx %d, pc 0x%x\n", whichcpu,
+ smp_ctable->phys_addr, thiscontext, (unsigned int)prog_counter);
+
+ found = obp_getprop(whichcpu, "mid", (char *)&cpu);
+ if (found == -1)
+ return -1;
+ DPRINTF("cpu found, id %d -> cpu %d\n", whichcpu, cpu);
+
+ return start_cpu((unsigned int)prog_counter, ((unsigned int)smp_ctable->phys_addr) >> 4,
+ thiscontext, cpu);
+}
+
+int obp_cpustop(__attribute__((unused)) unsigned int whichcpu)
+{
+ DPRINTF("obp_cpustop: cpu %d\n", whichcpu);
+
+ return 0;
+}
+
+int obp_cpuidle(__attribute__((unused)) unsigned int whichcpu)
+{
+ DPRINTF("obp_cpuidle: cpu %d\n", whichcpu);
+
+ return 0;
+}
+
+int obp_cpuresume(__attribute__((unused)) unsigned int whichcpu)
+{
+ DPRINTF("obp_cpuresume: cpu %d\n", whichcpu);
+
+ return 0;
+}
+
+void obp_fortheval_v2(char *str, int arg0, int arg1, int arg2, int arg3, int arg4)
+{
+ int dstacktmp = 0;
+
+ // It seems Solaris passes up to 5 arguments which should be pushed onto the Forth
+ // stack for execution. However the API doesn't provide for a way to specify the number
+ // of arguments actually being passed. Hence we preserve the state of the Forth stack
+ // before, push all the arguments, execute the Forth, then restore the stack to its
+ // previous state. This enables us to have a variable number of arguments and still
+ // preserve stack state between subsequent calls.
+
+ // Preserve stack state
+ dstacktmp = dstackcnt;
+
+ PUSH(arg4);
+ PUSH(arg3);
+ PUSH(arg2);
+ PUSH(arg1);
+ PUSH(arg0);
+
+ DPRINTF("obp_fortheval_v2(%x %x %x %x %x %s)\n", arg4, arg3, arg2, arg1, arg0, str);
+ push_str(str);
+ fword("eval");
+
+ // Restore stack state
+ dstackcnt = dstacktmp;
+}
+
+volatile uint32_t *obp_ticks;
+
+void *
+init_openprom(void)
+{
+ /* Setup the openprom vector. Note that all functions should be invoked
+ via their handler (see call-romvec.S) which acts as a proxy to save
+ the globals and setup the stack correctly */
+
+ // Linux wants a R/W romvec table
+ romvec0.pv_magic_cookie = LINUX_OPPROM_MAGIC;
+ romvec0.pv_romvers = 3;
+ romvec0.pv_plugin_revision = 2;
+ romvec0.pv_printrev = 0x20019;
+ romvec0.pv_v0mem.v0_totphys = NULL;
+ romvec0.pv_v0mem.v0_prommap = NULL;
+ romvec0.pv_v0mem.v0_available = NULL;
+ romvec0.pv_nodeops = &nodeops0;
+ romvec0.pv_bootstr = (void *)doublewalk;
+ romvec0.pv_v0devops.v0_devopen = &obp_devopen_handler;
+ romvec0.pv_v0devops.v0_devclose = &obp_devclose_handler;
+ romvec0.pv_v0devops.v0_rdblkdev = &obp_rdblkdev_handler;
+ romvec0.pv_stdin = &obp_stdin;
+ romvec0.pv_stdout = &obp_stdout;
+ romvec0.pv_getchar = obp_nbgetchar_handler;
+ romvec0.pv_putchar = (void (*)(int))obp_nbputchar_handler;
+ romvec0.pv_nbgetchar = obp_nbgetchar_handler;
+ romvec0.pv_nbputchar = obp_nbputchar_handler;
+ romvec0.pv_putstr = obp_putstr_handler;
+ romvec0.pv_reboot = obp_reboot_handler;
+ romvec0.pv_printf = obp_printf_handler;
+ romvec0.pv_abort = obp_abort_handler;
+
+ /* Point to the Forth obp-ticks variable and reset */
+ fword("obp-ticks");
+ obp_ticks = cell2pointer(POP());
+ *obp_ticks = 0;
+ romvec0.pv_ticks = obp_ticks;
+
+ romvec0.pv_halt = obp_halt_handler;
+ romvec0.pv_synchook = &sync_hook;
+ romvec0.pv_v0bootargs = &obp_argp;
+ romvec0.pv_fortheval.v2_eval = obp_fortheval_v2_handler;
+ romvec0.pv_v2devops.v2_inst2pkg = obp_inst2pkg_handler;
+ romvec0.pv_v2devops.v2_dumb_mem_alloc = obp_dumb_memalloc_handler;
+ romvec0.pv_v2devops.v2_dumb_mem_free = obp_dumb_memfree_handler;
+ romvec0.pv_v2devops.v2_dumb_mmap = obp_dumb_mmap_handler;
+ romvec0.pv_v2devops.v2_dumb_munmap = obp_dumb_munmap_handler;
+ romvec0.pv_v2devops.v2_dev_open = obp_devopen_handler;
+ romvec0.pv_v2devops.v2_dev_close = (void (*)(int))obp_devclose_handler;
+ romvec0.pv_v2devops.v2_dev_read = obp_devread_handler;
+ romvec0.pv_v2devops.v2_dev_write = obp_devwrite_handler;
+ romvec0.pv_v2devops.v2_dev_seek = obp_devseek_handler;
+
+ romvec0.pv_v2bootargs.bootpath = &bootpath;
+
+ romvec0.pv_v2bootargs.bootargs = &obp_arg.argv[1];
+
+ /* Point fd_stdin/fd_stdout to the Forth stdin/stdout variables */
+ fword("stdin");
+ romvec0.pv_v2bootargs.fd_stdin = cell2pointer(POP());
+ fword("stdout");
+ romvec0.pv_v2bootargs.fd_stdout = cell2pointer(POP());
+
+ romvec0.v3_memalloc = obp_memalloc_handler;
+
+ romvec0.v3_cpustart = obp_cpustart_handler;
+ romvec0.v3_cpustop = obp_cpustop_handler;
+ romvec0.v3_cpuidle = obp_cpuidle_handler;
+ romvec0.v3_cpuresume = obp_cpuresume_handler;
+
+ return &romvec0;
+}
Code Review / kvmfornfv.git / blobdiff