prom.c 1.4 KB

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  1. // SPDX-License-Identifier: GPL-2.0-only
  2. /*
  3. *
  4. * Copyright (C) 2009 Gabor Juhos <juhosg@openwrt.org>
  5. * Copyright (C) 2010 Joonas Lahtinen <joonas.lahtinen@gmail.com>
  6. * Copyright (C) 2013 John Crispin <john@phrozen.org>
  7. */
  8. #include <linux/string.h>
  9. #include <linux/of_fdt.h>
  10. #include <linux/of_platform.h>
  11. #include <asm/bootinfo.h>
  12. #include <asm/addrspace.h>
  13. #include <asm/mach-ralink/ralink_regs.h>
  14. #include "common.h"
  15. struct ralink_soc_info soc_info;
  16. struct rt2880_pmx_group *rt2880_pinmux_data = NULL;
  17. enum ralink_soc_type ralink_soc;
  18. EXPORT_SYMBOL_GPL(ralink_soc);
  19. const char *get_system_type(void)
  20. {
  21. return soc_info.sys_type;
  22. }
  23. static __init void prom_init_cmdline(void)
  24. {
  25. int argc;
  26. char **argv;
  27. int i;
  28. pr_debug("prom: fw_arg0=%08x fw_arg1=%08x fw_arg2=%08x fw_arg3=%08x\n",
  29. (unsigned int)fw_arg0, (unsigned int)fw_arg1,
  30. (unsigned int)fw_arg2, (unsigned int)fw_arg3);
  31. argc = fw_arg0;
  32. argv = (char **) KSEG1ADDR(fw_arg1);
  33. if (!argv) {
  34. pr_debug("argv=%p is invalid, skipping\n",
  35. argv);
  36. return;
  37. }
  38. for (i = 0; i < argc; i++) {
  39. char *p = (char *) KSEG1ADDR(argv[i]);
  40. if (CPHYSADDR(p) && *p) {
  41. pr_debug("argv[%d]: %s\n", i, p);
  42. strlcat(arcs_cmdline, " ", sizeof(arcs_cmdline));
  43. strlcat(arcs_cmdline, p, sizeof(arcs_cmdline));
  44. }
  45. }
  46. }
  47. void __init prom_init(void)
  48. {
  49. prom_soc_init(&soc_info);
  50. pr_info("SoC Type: %s\n", get_system_type());
  51. prom_init_cmdline();
  52. }
  53. void __init prom_free_prom_memory(void)
  54. {
  55. }