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 #ifdef CONFIG_OMAP 12 #include <asm/omap_boot.h> 13 #endif 14 15 /* Architecture-specific global data */ 16 struct arch_global_data { 17 #if defined(CONFIG_FSL_ESDHC) 18 u32 sdhc_clk; 19 #endif 20 21 #if defined(CONFIG_U_QE) 22 u32 qe_clk; 23 u32 brg_clk; 24 uint mp_alloc_base; 25 uint mp_alloc_top; 26 #endif /* CONFIG_U_QE */ 27 28 #ifdef CONFIG_AT91FAMILY 29 /* "static data" needed by at91's clock.c */ 30 unsigned long cpu_clk_rate_hz; 31 unsigned long main_clk_rate_hz; 32 unsigned long mck_rate_hz; 33 unsigned long plla_rate_hz; 34 unsigned long pllb_rate_hz; 35 unsigned long at91_pllb_usb_init; 36 #endif 37 /* "static data" needed by most of timer.c on ARM platforms */ 38 unsigned long timer_rate_hz; 39 unsigned long tbu; 40 unsigned long tbl; 41 unsigned long lastinc; 42 unsigned long long timer_reset_value; 43 #if !(defined(CONFIG_SYS_ICACHE_OFF) && defined(CONFIG_SYS_DCACHE_OFF)) 44 unsigned long tlb_addr; 45 unsigned long tlb_size; 46 #endif 47 48 #ifdef CONFIG_OMAP 49 struct omap_boot_parameters omap_boot_params; 50 #endif 51 }; 52 53 #include <asm-generic/global_data.h> 54 55 #ifdef __clang__ 56 57 #define DECLARE_GLOBAL_DATA_PTR 58 #define gd get_gd() 59 60 static inline gd_t *get_gd(void) 61 { 62 gd_t *gd_ptr; 63 64 #ifdef CONFIG_ARM64 65 /* 66 * Make will already error that reserving x18 is not supported at the 67 * time of writing, clang: error: unknown argument: '-ffixed-x18' 68 */ 69 __asm__ volatile("mov %0, x18\n" : "=r" (gd_ptr)); 70 #else 71 __asm__ volatile("mov %0, r9\n" : "=r" (gd_ptr)); 72 #endif 73 74 return gd_ptr; 75 } 76 77 #else 78 79 #ifdef CONFIG_ARM64 80 #define DECLARE_GLOBAL_DATA_PTR register volatile gd_t *gd asm ("x18") 81 #else 82 #define DECLARE_GLOBAL_DATA_PTR register volatile gd_t *gd asm ("r9") 83 #endif 84 #endif 85 86 #endif /* __ASM_GBL_DATA_H */ 87