arch/arm/include/asm/global_data.h

   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
   8 #ifndef __ASM_GBL_DATA_H
   9 #define __ASM_GBL_DATA_H
  10
  11 /* Architecture-specific global data */
  12 struct arch_global_data {
  13 #if defined(CONFIG_FSL_ESDHC)
  14         u32 sdhc_clk;
  15 #endif
  16
  17 #if defined(CONFIG_U_QE)
  18         u32 qe_clk;
  19         u32 brg_clk;
  20         uint mp_alloc_base;
  21         uint mp_alloc_top;
  22 #endif /* CONFIG_U_QE */
  23
  24 #ifdef CONFIG_AT91FAMILY
  25         /* "static data" needed by at91's clock.c */
  26         unsigned long   cpu_clk_rate_hz;
  27         unsigned long   main_clk_rate_hz;
  28         unsigned long   mck_rate_hz;
  29         unsigned long   plla_rate_hz;
  30         unsigned long   pllb_rate_hz;
  31         unsigned long   at91_pllb_usb_init;
  32 #endif
  33         /* "static data" needed by most of timer.c on ARM platforms */
  34         unsigned long timer_rate_hz;
  35         unsigned long tbu;
  36         unsigned long tbl;
  37         unsigned long lastinc;
  38         unsigned long long timer_reset_value;
  39 #if !(defined(CONFIG_SYS_ICACHE_OFF) && defined(CONFIG_SYS_DCACHE_OFF))
  40         unsigned long tlb_addr;
  41         unsigned long tlb_size;
  42 #if defined(CONFIG_ARM64)
  43         unsigned long tlb_fillptr;
  44         unsigned long tlb_emerg;
  45 #endif
  46 #endif
  47 #ifdef CONFIG_SYS_MEM_RESERVE_SECURE
  48 #define MEM_RESERVE_SECURE_SECURED      0x1
  49 #define MEM_RESERVE_SECURE_MAINTAINED   0x2
  50 #define MEM_RESERVE_SECURE_ADDR_MASK    (~0x3)
  51         /*
  52          * Secure memory addr
  53          * This variable needs maintenance if the RAM base is not zero,
  54          * or if RAM splits into non-consecutive banks. It also has a
  55          * flag indicating the secure memory is marked as secure by MMU.
  56          * Flags used: 0x1 secured
  57          *             0x2 maintained
  58          */
  59         phys_addr_t secure_ram;
  60         unsigned long tlb_allocated;
  61 #endif
  62 #ifdef CONFIG_RESV_RAM
  63         /*
  64          * Reserved RAM for memory resident, eg. Management Complex (MC)
  65          * driver which continues to run after U-Boot exits.
  66          */
  67         phys_addr_t resv_ram;
  68 #endif
  69
  70 #ifdef CONFIG_ARCH_OMAP2PLUS
  71         u32 omap_boot_device;
  72         u32 omap_boot_mode;
  73         u8 omap_ch_flags;
  74 #endif
  75 #if defined(CONFIG_FSL_LSCH3) && defined(CONFIG_SYS_FSL_HAS_DP_DDR)
  76         unsigned long mem2_clk;
  77 #endif
  78 };
  79
  80 #include <asm-generic/global_data.h>
  81
  82 #ifdef __clang__
  83
  84 #define DECLARE_GLOBAL_DATA_PTR
  85 #define gd      get_gd()
  86
  87 static inline gd_t *get_gd(void)
  88 {
  89         gd_t *gd_ptr;
  90
  91 #ifdef CONFIG_ARM64
  92         /*
  93          * Make will already error that reserving x18 is not supported at the
  94          * time of writing, clang: error: unknown argument: '-ffixed-x18'
  95          */
  96         __asm__ volatile("mov %0, x18\n" : "=r" (gd_ptr));
  97 #else
  98         __asm__ volatile("mov %0, r9\n" : "=r" (gd_ptr));
  99 #endif
 100
 101         return gd_ptr;
 102 }
 103
 104 #else
 105
 106 #ifdef CONFIG_ARM64
 107 #define DECLARE_GLOBAL_DATA_PTR         register volatile gd_t *gd asm ("x18")
 108 #else
 109 #define DECLARE_GLOBAL_DATA_PTR         register volatile gd_t *gd asm ("r9")
 110 #endif
 111 #endif
 112
 113 #endif /* __ASM_GBL_DATA_H */