mirror of
https://github.com/fail0verflow/bootmii.git
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178 lines
3.1 KiB
C
178 lines
3.1 KiB
C
/*
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bootmii - a Free Software replacement for the Nintendo/BroadOn boot2.
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random utilities
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Copyright (C) 2008, 2009 Hector Martin "marcan" <marcan@marcan.st>
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# This code is licensed to you under the terms of the GNU GPL, version 2;
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# see file COPYING or http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt
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*/
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#ifndef __UTILS_H__
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#define __UTILS_H__
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static inline u32 read32(u32 addr)
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{
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u32 data;
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__asm__ volatile ("ldr\t%0, [%1]" : "=r" (data) : "r" (addr));
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return data;
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}
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static inline void write32(u32 addr, u32 data)
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{
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__asm__ volatile ("str\t%0, [%1]" : : "r" (data), "r" (addr));
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}
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static inline u32 set32(u32 addr, u32 set)
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{
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u32 data;
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__asm__ volatile (
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"ldr\t%0, [%1]\n"
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"\torr\t%0, %2\n"
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"\tstr\t%0, [%1]"
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: "=&r" (data)
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: "r" (addr), "r" (set)
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);
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return data;
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}
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static inline u32 clear32(u32 addr, u32 clear)
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{
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u32 data;
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__asm__ volatile (
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"ldr\t%0, [%1]\n"
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"\tbic\t%0, %2\n"
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"\tstr\t%0, [%1]"
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: "=&r" (data)
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: "r" (addr), "r" (clear)
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);
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return data;
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}
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static inline u32 mask32(u32 addr, u32 clear, u32 set)
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{
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u32 data;
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__asm__ volatile (
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"ldr\t%0, [%1]\n"
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"\tbic\t%0, %3\n"
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"\torr\t%0, %2\n"
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"\tstr\t%0, [%1]"
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: "=&r" (data)
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: "r" (addr), "r" (set), "r" (clear)
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);
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return data;
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}
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static inline u16 read16(u32 addr)
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{
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u32 data;
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__asm__ volatile ("ldrh\t%0, [%1]" : "=r" (data) : "r" (addr));
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return data;
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}
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static inline void write16(u32 addr, u16 data)
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{
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__asm__ volatile ("strh\t%0, [%1]" : : "r" (data), "r" (addr));
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}
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static inline u16 set16(u32 addr, u16 set)
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{
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u16 data;
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__asm__ volatile (
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"ldrh\t%0, [%1]\n"
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"\torr\t%0, %2\n"
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"\tstrh\t%0, [%1]"
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: "=&r" (data)
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: "r" (addr), "r" (set)
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);
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return data;
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}
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static inline u16 clear16(u32 addr, u16 clear)
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{
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u16 data;
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__asm__ volatile (
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"ldrh\t%0, [%1]\n"
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"\tbic\t%0, %2\n"
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"\tstrh\t%0, [%1]"
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: "=&r" (data)
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: "r" (addr), "r" (clear)
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);
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return data;
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}
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static inline u16 mask16(u32 addr, u16 clear, u16 set)
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{
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u16 data;
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__asm__ volatile (
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"ldrh\t%0, [%1]\n"
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"\tbic\t%0, %3\n"
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"\torr\t%0, %2\n"
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"\tstrh\t%0, [%1]"
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: "=&r" (data)
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: "r" (addr), "r" (set), "r" (clear)
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);
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return data;
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}
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static inline u8 read8(u32 addr)
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{
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u32 data;
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__asm__ volatile ("ldrb\t%0, [%1]" : "=r" (data) : "r" (addr));
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return data;
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}
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static inline void write8(u32 addr, u8 data)
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{
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__asm__ volatile ("strb\t%0, [%1]" : : "r" (data), "r" (addr));
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}
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static inline u8 set8(u32 addr, u8 set)
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{
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u8 data;
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__asm__ volatile (
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"ldrb\t%0, [%1]\n"
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"\torr\t%0, %2\n"
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"\tstrb\t%0, [%1]"
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: "=&r" (data)
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: "r" (addr), "r" (set)
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);
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return data;
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}
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static inline u8 clear8(u32 addr, u8 clear)
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{
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u8 data;
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__asm__ volatile (
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"ldrb\t%0, [%1]\n"
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"\tbic\t%0, %2\n"
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"\tstrb\t%0, [%1]"
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: "=&r" (data)
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: "r" (addr), "r" (clear)
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);
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return data;
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}
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static inline u8 mask8(u32 addr, u8 clear, u8 set)
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{
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u8 data;
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__asm__ volatile (
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"ldrb\t%0, [%1]\n"
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"\tbic\t%0, %3\n"
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"\torr\t%0, %2\n"
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"\tstrb\t%0, [%1]"
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: "=&r" (data)
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: "r" (addr), "r" (set), "r" (clear)
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);
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return data;
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}
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#define udelay(x) delay((x) * 19 / 10)
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void delay(u32 d);
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void panic(u8 v);
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#endif
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