global_data.h 1.9 KB

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  1. /*
  2. * (C) Copyright 2002-2010
  3. * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
  4. *
  5. * SPDX-License-Identifier: GPL-2.0+
  6. */
  7. #ifndef __ASM_GBL_DATA_H
  8. #define __ASM_GBL_DATA_H
  9. /* Architecture-specific global data */
  10. struct arch_global_data {
  11. #if defined(CONFIG_FSL_ESDHC)
  12. u32 sdhc_clk;
  13. #endif
  14. #if defined(CONFIG_U_QE)
  15. u32 qe_clk;
  16. u32 brg_clk;
  17. uint mp_alloc_base;
  18. uint mp_alloc_top;
  19. #endif /* CONFIG_U_QE */
  20. #ifdef CONFIG_AT91FAMILY
  21. /* "static data" needed by at91's clock.c */
  22. unsigned long cpu_clk_rate_hz;
  23. unsigned long main_clk_rate_hz;
  24. unsigned long mck_rate_hz;
  25. unsigned long plla_rate_hz;
  26. unsigned long pllb_rate_hz;
  27. unsigned long at91_pllb_usb_init;
  28. #endif
  29. /* "static data" needed by most of timer.c on ARM platforms */
  30. unsigned long timer_rate_hz;
  31. unsigned long tbu;
  32. unsigned long tbl;
  33. unsigned long lastinc;
  34. unsigned long long timer_reset_value;
  35. #if !(defined(CONFIG_SYS_ICACHE_OFF) && defined(CONFIG_SYS_DCACHE_OFF))
  36. unsigned long tlb_addr;
  37. unsigned long tlb_size;
  38. #endif
  39. #ifdef CONFIG_OMAP_COMMON
  40. u32 omap_boot_device;
  41. u32 omap_boot_mode;
  42. u8 omap_ch_flags;
  43. #endif
  44. #if defined(CONFIG_FSL_LSCH3) && defined(CONFIG_SYS_FSL_HAS_DP_DDR)
  45. unsigned long mem2_clk;
  46. #endif
  47. };
  48. #include <asm-generic/global_data.h>
  49. #ifdef __clang__
  50. #define DECLARE_GLOBAL_DATA_PTR
  51. #define gd get_gd()
  52. static inline gd_t *get_gd(void)
  53. {
  54. gd_t *gd_ptr;
  55. #ifdef CONFIG_ARM64
  56. /*
  57. * Make will already error that reserving x18 is not supported at the
  58. * time of writing, clang: error: unknown argument: '-ffixed-x18'
  59. */
  60. __asm__ volatile("mov %0, x18\n" : "=r" (gd_ptr));
  61. #else
  62. __asm__ volatile("mov %0, r9\n" : "=r" (gd_ptr));
  63. #endif
  64. return gd_ptr;
  65. }
  66. #else
  67. #ifdef CONFIG_ARM64
  68. #define DECLARE_GLOBAL_DATA_PTR register volatile gd_t *gd asm ("x18")
  69. #else
  70. #define DECLARE_GLOBAL_DATA_PTR register volatile gd_t *gd asm ("r9")
  71. #endif
  72. #endif
  73. #endif /* __ASM_GBL_DATA_H */