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nios2: revert back to builtin sys_io functions

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Some time ago we did a cleanup of sys_io function and left nios2 broken,
especially on the MAX10 board. Revert back to the original
implementation for this architecture.

Fixes #35694

Signed-off-by: Anas Nashif <anas.nashif@intel.com>
This commit is contained in:
Anas Nashif 2021-05-26 14:31:49 -04:00 • committed by Kumar Gala
commit 5b8d418058
3 changed files with 38 additions and 2 deletions
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2
include/arch/nios2/arch.h
View file

@ -22,7 +22,7 @@
#include <devicetree.h>
#include <arch/nios2/nios2.h>
#include <arch/common/sys_bitops.h>
#include <arch/common/sys_io.h>
#include <sys/sys_io.h>
#include <arch/common/ffs.h>
#define ARCH_STACK_PTR_ALIGN 4

36
include/arch/nios2/asm_inline_gcc.h
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@ -14,7 +14,43 @@
#ifndef _ASMLANGUAGE
#include <zephyr/types.h>
#include <sys/sys_io.h>
#include <toolchain.h>
/* Using the *io variants of these instructions to prevent issues on
* devices that have an instruction/data cache
*/
static ALWAYS_INLINE void sys_write32(uint32_t data, mm_reg_t addr)
{
__builtin_stwio((void *)addr, data);
}
static ALWAYS_INLINE uint32_t sys_read32(mm_reg_t addr)
{
return __builtin_ldwio((void *)addr);
}
static ALWAYS_INLINE void sys_write8(uint8_t data, mm_reg_t addr)
{
sys_write32(data, addr);
}
static ALWAYS_INLINE uint8_t sys_read8(mm_reg_t addr)
{
return __builtin_ldbuio((void *)addr);
}
static ALWAYS_INLINE void sys_write16(uint16_t data, mm_reg_t addr)
{
sys_write32(data, addr);
}
static ALWAYS_INLINE uint16_t sys_read16(mm_reg_t addr)
{
return __builtin_ldhuio((void *)addr);
}
#endif /* _ASMLANGUAGE */
#endif /* _ASM_INLINE_GCC_PUBLIC_GCC_H */

2
include/arch/nios2/nios2.h
View file

@ -55,7 +55,7 @@ extern "C"
#include <zephyr/types.h>
#include <arch/cpu.h>
#include <arch/common/sys_io.h>
#include <sys/sys_io.h>
/*
* Functions for accessing select Nios II general-purpose registers.