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 #if defined(CONFIG_SYS_FULL_VA) 42 unsigned long pmd_addr[CONFIG_SYS_PTL1_ENTRIES]; 43 #endif 44 unsigned long tlb_size; 45 #endif 46 47 #ifdef CONFIG_OMAP_COMMON 48 u32 omap_boot_device; 49 u32 omap_boot_mode; 50 u8 omap_ch_flags; 51 #endif 52 #if defined(CONFIG_FSL_LSCH3) && defined(CONFIG_SYS_FSL_HAS_DP_DDR) 53 unsigned long mem2_clk; 54 #endif 55 }; 56 57 #include <asm-generic/global_data.h> 58 59 #ifdef __clang__ 60 61 #define DECLARE_GLOBAL_DATA_PTR 62 #define gd get_gd() 63 64 static inline gd_t *get_gd(void) 65 { 66 gd_t *gd_ptr; 67 68 #ifdef CONFIG_ARM64 69 /* 70 * Make will already error that reserving x18 is not supported at the 71 * time of writing, clang: error: unknown argument: '-ffixed-x18' 72 */ 73 __asm__ volatile("mov %0, x18\n" : "=r" (gd_ptr)); 74 #else 75 __asm__ volatile("mov %0, r9\n" : "=r" (gd_ptr)); 76 #endif 77 78 return gd_ptr; 79 } 80 81 #else 82 83 #ifdef CONFIG_ARM64 84 #define DECLARE_GLOBAL_DATA_PTR register volatile gd_t *gd asm ("x18") 85 #else 86 #define DECLARE_GLOBAL_DATA_PTR register volatile gd_t *gd asm ("r9") 87 #endif 88 #endif 89 90 #endif /* __ASM_GBL_DATA_H */ 91