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[people/ms/u-boot.git] / arch / arm / include / asm / global_data.h
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0157cedb 1/*
91a76751 2 * (C) Copyright 2002-2010
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3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
4 *
1a459660 5 * SPDX-License-Identifier: GPL-2.0+
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6 */
7
8#ifndef __ASM_GBL_DATA_H
9#define __ASM_GBL_DATA_H
5cb48582 10
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11#ifdef CONFIG_OMAP
12#include <asm/omap_boot.h>
13#endif
14
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15/* Architecture-specific global data */
16struct arch_global_data {
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17#if defined(CONFIG_FSL_ESDHC)
18 u32 sdhc_clk;
19#endif
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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
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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
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37 /* "static data" needed by most of timer.c on ARM platforms */
38 unsigned long timer_rate_hz;
8ff43b03 39 unsigned long tbu;
66ee6923 40 unsigned long tbl;
582601da 41 unsigned long lastinc;
5f70714c 42 unsigned long long timer_reset_value;
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43#if !(defined(CONFIG_SYS_ICACHE_OFF) && defined(CONFIG_SYS_DCACHE_OFF))
44 unsigned long tlb_addr;
45 unsigned long tlb_size;
46#endif
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47
48#ifdef CONFIG_OMAP
49 struct omap_boot_parameters omap_boot_params;
50#endif
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51#ifdef CONFIG_FSL_LSCH3
52 unsigned long mem2_clk;
53#endif
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54};
55
baa1e536 56#include <asm-generic/global_data.h>
0157cedb 57
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58#ifdef __clang__
59
60#define DECLARE_GLOBAL_DATA_PTR
61#define gd get_gd()
62
63static inline gd_t *get_gd(void)
64{
65 gd_t *gd_ptr;
66
67#ifdef CONFIG_ARM64
68 /*
69 * Make will already error that reserving x18 is not supported at the
70 * time of writing, clang: error: unknown argument: '-ffixed-x18'
71 */
72 __asm__ volatile("mov %0, x18\n" : "=r" (gd_ptr));
73#else
74 __asm__ volatile("mov %0, r9\n" : "=r" (gd_ptr));
75#endif
76
77 return gd_ptr;
78}
79
80#else
81
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82#ifdef CONFIG_ARM64
83#define DECLARE_GLOBAL_DATA_PTR register volatile gd_t *gd asm ("x18")
84#else
85#define DECLARE_GLOBAL_DATA_PTR register volatile gd_t *gd asm ("r9")
86#endif
c65a2abb 87#endif
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88
89#endif /* __ASM_GBL_DATA_H */