From: Rick Chen rick@andestech.com
Add header files for RISC-V. Cache, ptregs, data type and other definitions are included.
Signed-off-by: Rick Chen rick@andestech.com Signed-off-by: Rick Chen rickchen36@gmail.com Signed-off-by: Greentime Hu green.hu@gmail.com --- arch/riscv/include/asm/bitops.h | 172 ++++++++++++ arch/riscv/include/asm/bootm.h | 65 +++++ arch/riscv/include/asm/byteorder.h | 35 +++ arch/riscv/include/asm/cache.h | 22 ++ arch/riscv/include/asm/config.h | 13 + arch/riscv/include/asm/encoding.h | 188 +++++++++++++ arch/riscv/include/asm/global_data.h | 22 ++ arch/riscv/include/asm/io.h | 494 +++++++++++++++++++++++++++++++++ arch/riscv/include/asm/linkage.h | 12 + arch/riscv/include/asm/mach-types.h | 30 ++ arch/riscv/include/asm/posix_types.h | 89 ++++++ arch/riscv/include/asm/processor.h | 26 ++ arch/riscv/include/asm/ptrace.h | 106 +++++++ arch/riscv/include/asm/sections.h | 11 + arch/riscv/include/asm/setup.h | 191 +++++++++++++ arch/riscv/include/asm/string.h | 43 +++ arch/riscv/include/asm/system.h | 18 ++ arch/riscv/include/asm/types.h | 64 +++++ arch/riscv/include/asm/u-boot-riscv.h | 21 ++ arch/riscv/include/asm/u-boot.h | 46 +++ arch/riscv/include/asm/unaligned.h | 1 + 21 files changed, 1669 insertions(+), 0 deletions(-) create mode 100644 arch/riscv/include/asm/bitops.h create mode 100644 arch/riscv/include/asm/bootm.h create mode 100644 arch/riscv/include/asm/byteorder.h create mode 100644 arch/riscv/include/asm/cache.h create mode 100644 arch/riscv/include/asm/config.h create mode 100644 arch/riscv/include/asm/encoding.h create mode 100644 arch/riscv/include/asm/global_data.h create mode 100644 arch/riscv/include/asm/io.h create mode 100644 arch/riscv/include/asm/linkage.h create mode 100644 arch/riscv/include/asm/mach-types.h create mode 100644 arch/riscv/include/asm/posix_types.h create mode 100644 arch/riscv/include/asm/processor.h create mode 100644 arch/riscv/include/asm/ptrace.h create mode 100644 arch/riscv/include/asm/sections.h create mode 100644 arch/riscv/include/asm/setup.h create mode 100644 arch/riscv/include/asm/string.h create mode 100644 arch/riscv/include/asm/system.h create mode 100644 arch/riscv/include/asm/types.h create mode 100644 arch/riscv/include/asm/u-boot-riscv.h create mode 100644 arch/riscv/include/asm/u-boot.h create mode 100644 arch/riscv/include/asm/unaligned.h
diff --git a/arch/riscv/include/asm/bitops.h b/arch/riscv/include/asm/bitops.h new file mode 100644 index 0000000..55d420f --- /dev/null +++ b/arch/riscv/include/asm/bitops.h @@ -0,0 +1,172 @@ +/* + * Copyright 1995, Russell King. + * Various bits and pieces copyrights include: + * Linus Torvalds (test_bit). + * + * Copyright (C) 2017 Andes Technology Corporation + * Rick Chen, Andes Technology Corporation rick@andestech.com + * + * bit 0 is the LSB of addr; bit 32 is the LSB of (addr+1). + * + * Please note that the code in this file should never be included + * from user space. Many of these are not implemented in assembler + * since they would be too costly. Also, they require priviledged + * instructions (which are not available from user mode) to ensure + * that they are atomic. + */ + +#ifndef __ASM_RISCV_BITOPS_H +#define __ASM_RISCV_BITOPS_H + +#ifdef __KERNEL__ + +#include <asm/system.h> +#include <asm-generic/bitops/fls.h> +#include <asm-generic/bitops/__fls.h> +#include <asm-generic/bitops/fls64.h> +#include <asm-generic/bitops/__ffs.h> + +#define smp_mb__before_clear_bit() do { } while (0) +#define smp_mb__after_clear_bit() do { } while (0) + +/* + * Function prototypes to keep gcc -Wall happy. + */ +static inline void __set_bit(int nr, void *addr) +{ + int *a = (int *)addr; + int mask; + + a += nr >> 5; + mask = 1 << (nr & 0x1f); + *a |= mask; +} + +static inline void __clear_bit(int nr, void *addr) +{ + int *a = (int *)addr; + int mask; + + a += nr >> 5; + mask = 1 << (nr & 0x1f); + *a &= ~mask; +} + +static inline void __change_bit(int nr, void *addr) +{ + int mask; + unsigned long *ADDR = (unsigned long *)addr; + + ADDR += nr >> 5; + mask = 1 << (nr & 31); + *ADDR ^= mask; +} + +static inline int __test_and_set_bit(int nr, void *addr) +{ + int mask, retval; + unsigned int *a = (unsigned int *)addr; + + a += nr >> 5; + mask = 1 << (nr & 0x1f); + retval = (mask & *a) != 0; + *a |= mask; + return retval; +} + +static inline int __test_and_clear_bit(int nr, void *addr) +{ + int mask, retval; + unsigned int *a = (unsigned int *)addr; + + a += nr >> 5; + mask = 1 << (nr & 0x1f); + retval = (mask & *a) != 0; + *a &= ~mask; + return retval; +} + +static inline int __test_and_change_bit(int nr, void *addr) +{ + int mask, retval; + unsigned int *a = (unsigned int *)addr; + + a += nr >> 5; + mask = 1 << (nr & 0x1f); + retval = (mask & *a) != 0; + *a ^= mask; + return retval; +} + +/* + * This routine doesn't need to be atomic. + */ +static inline int test_bit(int nr, const void *addr) +{ + return ((unsigned char *)addr)[nr >> 3] & (1U << (nr & 7)); +} + +/* + * ffz = Find First Zero in word. Undefined if no zero exists, + * so code should check against ~0UL first.. + */ +static inline unsigned long ffz(unsigned long word) +{ + int k; + + word = ~word; + k = 31; + if (word & 0x0000ffff) { + k -= 16; word <<= 16; + } + if (word & 0x00ff0000) { + k -= 8; word <<= 8; + } + if (word & 0x0f000000) { + k -= 4; word <<= 4; + } + if (word & 0x30000000) { + k -= 2; word <<= 2; + } + if (word & 0x40000000) + k -= 1; + + return k; +} + +/* + * ffs: find first bit set. This is defined the same way as + * the libc and compiler builtin ffs routines, therefore + * differs in spirit from the above ffz (man ffs). + */ + +/* + * redefined in include/linux/bitops.h + * #define ffs(x) generic_ffs(x) + */ + +/* + * hweightN: returns the hamming weight (i.e. the number + * of bits set) of a N-bit word + */ + +#define hweight32(x) generic_hweight32(x) +#define hweight16(x) generic_hweight16(x) +#define hweight8(x) generic_hweight8(x) + +#define ext2_set_bit test_and_set_bit +#define ext2_clear_bit test_and_clear_bit +#define ext2_test_bit test_bit +#define ext2_find_first_zero_bit find_first_zero_bit +#define ext2_find_next_zero_bit find_next_zero_bit + +/* Bitmap functions for the minix filesystem. */ +#define minix_test_and_set_bit(nr, addr) test_and_set_bit(nr, addr) +#define minix_set_bit(nr, addr) set_bit(nr, addr) +#define minix_test_and_clear_bit(nr, addr) test_and_clear_bit(nr, addr) +#define minix_test_bit(nr, addr) test_bit(nr, addr) +#define minix_find_first_zero_bit(addr, size) find_first_zero_bit(addr, size) + +#endif /* __KERNEL__ */ + +#endif /* __ASM_RISCV_BITOPS_H */ diff --git a/arch/riscv/include/asm/bootm.h b/arch/riscv/include/asm/bootm.h new file mode 100644 index 0000000..0a644bb --- /dev/null +++ b/arch/riscv/include/asm/bootm.h @@ -0,0 +1,65 @@ +/* + * Copyright (c) 2013, Google Inc. + * + * Copyright (C) 2011 + * Corscience GmbH & Co. KG - Simon Schwarz schwarz@corscience.de + * + * SPDX-License-Identifier: GPL-2.0+ + * + * SPDX-License-Identifier: GPL-2.0+ + */ +#ifndef NDS32_BOOTM_H +#define NDS32_BOOTM_H + +#include <asm/setup.h> + +#if defined(CONFIG_SETUP_MEMORY_TAGS) || \ + defined(CONFIG_CMDLINE_TAG) || \ + defined(CONFIG_INITRD_TAG) || \ + defined(CONFIG_SERIAL_TAG) || \ + defined(CONFIG_REVISION_TAG) +# define BOOTM_ENABLE_TAGS 1 +#else +# define BOOTM_ENABLE_TAGS 0 +#endif + +#ifdef CONFIG_SETUP_MEMORY_TAGS +# define BOOTM_ENABLE_MEMORY_TAGS 1 +#else +# define BOOTM_ENABLE_MEMORY_TAGS 0 +#endif + +#ifdef CONFIG_CMDLINE_TAG + #define BOOTM_ENABLE_CMDLINE_TAG 1 +#else + #define BOOTM_ENABLE_CMDLINE_TAG 0 +#endif + +#ifdef CONFIG_INITRD_TAG + #define BOOTM_ENABLE_INITRD_TAG 1 +#else + #define BOOTM_ENABLE_INITRD_TAG 0 +#endif + +#ifdef CONFIG_SERIAL_TAG + #define BOOTM_ENABLE_SERIAL_TAG 1 +void get_board_serial(struct tag_serialnr *serialnr); +#else + #define BOOTM_ENABLE_SERIAL_TAG 0 +static inline void get_board_serial(struct tag_serialnr *serialnr) +{ +} +#endif + +#ifdef CONFIG_REVISION_TAG + #define BOOTM_ENABLE_REVISION_TAG 1 +u32 get_board_rev(void); +#else + #define BOOTM_ENABLE_REVISION_TAG 0 +static inline u32 get_board_rev(void) +{ + return 0; +} +#endif + +#endif diff --git a/arch/riscv/include/asm/byteorder.h b/arch/riscv/include/asm/byteorder.h new file mode 100644 index 0000000..d26ac56 --- /dev/null +++ b/arch/riscv/include/asm/byteorder.h @@ -0,0 +1,35 @@ +/* + * linux/include/asm-arm/byteorder.h + * + * Copyright (C) 2017 Andes Technology Corporation + * Rick Chen, Andes Technology Corporation rick@andestech.com + * + * ARM Endian-ness. In little endian mode, the data bus is connected such + * that byte accesses appear as: + * 0 = d0...d7, 1 = d8...d15, 2 = d16...d23, 3 = d24...d31 + * and word accesses (data or instruction) appear as: + * d0...d31 + * + * When in big endian mode, byte accesses appear as: + * 0 = d24...d31, 1 = d16...d23, 2 = d8...d15, 3 = d0...d7 + * and word accesses (data or instruction) appear as: + * d0...d31 + */ + +#ifndef __ASM_RISCV_BYTEORDER_H +#define __ASM_RISCV_BYTEORDER_H + +#include <asm/types.h> + +#if !defined(__STRICT_ANSI__) || defined(__KERNEL__) +# define __BYTEORDER_HAS_U64__ +# define __SWAB_64_THRU_32__ +#endif + +#ifdef __RISCVEB__ +#include <linux/byteorder/big_endian.h> +#else +#include <linux/byteorder/little_endian.h> +#endif + +#endif diff --git a/arch/riscv/include/asm/cache.h b/arch/riscv/include/asm/cache.h new file mode 100644 index 0000000..facf072 --- /dev/null +++ b/arch/riscv/include/asm/cache.h @@ -0,0 +1,22 @@ +/* + * Copyright (C) 2017 Andes Technology Corporation + * Rick Chen, Andes Technology Corporation rick@andestech.com + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#ifndef _ASM_RISCV_CACHE_H +#define _ASM_RISCV_CACHE_H + +/* + * The current upper bound for RISCV L1 data cache line sizes is 32 bytes. + * We use that value for aligning DMA buffers unless the board config has + * specified an alternate cache line size. + */ +#ifdef CONFIG_SYS_CACHELINE_SIZE +#define ARCH_DMA_MINALIGN CONFIG_SYS_CACHELINE_SIZE +#else +#define ARCH_DMA_MINALIGN 32 +#endif + +#endif /* _ASM_RISCV_CACHE_H */ diff --git a/arch/riscv/include/asm/config.h b/arch/riscv/include/asm/config.h new file mode 100644 index 0000000..5f94eb0 --- /dev/null +++ b/arch/riscv/include/asm/config.h @@ -0,0 +1,13 @@ +/* + * Copyright (C) 2017 Andes Technology Corporation + * Rick Chen, Andes Technology Corporation rick@andestech.com + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#ifndef _ASM_CONFIG_H_ +#define _ASM_CONFIG_H_ + +#define CONFIG_LMB + +#endif diff --git a/arch/riscv/include/asm/encoding.h b/arch/riscv/include/asm/encoding.h new file mode 100644 index 0000000..5ff6d59 --- /dev/null +++ b/arch/riscv/include/asm/encoding.h @@ -0,0 +1,188 @@ +/* + * Copyright (c) 2017 Microsemi Corporation. + * Padmarao Begari, Microsemi Corporation padmarao.begari@microsemi.com + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#ifndef RISCV_CSR_ENCODING_H +#define RISCV_CSR_ENCODING_H + +#define MSTATUS_UIE 0x00000001 +#define MSTATUS_SIE 0x00000002 +#define MSTATUS_HIE 0x00000004 +#define MSTATUS_MIE 0x00000008 +#define MSTATUS_UPIE 0x00000010 +#define MSTATUS_SPIE 0x00000020 +#define MSTATUS_HPIE 0x00000040 +#define MSTATUS_MPIE 0x00000080 +#define MSTATUS_SPP 0x00000100 +#define MSTATUS_HPP 0x00000600 +#define MSTATUS_MPP 0x00001800 +#define MSTATUS_FS 0x00006000 +#define MSTATUS_XS 0x00018000 +#define MSTATUS_MPRV 0x00020000 +#define MSTATUS_PUM 0x00040000 +#define MSTATUS_VM 0x1F000000 +#define MSTATUS32_SD 0x80000000 +#define MSTATUS64_SD 0x8000000000000000 + +#define MCAUSE32_CAUSE 0x7FFFFFFF +#define MCAUSE64_CAUSE 0x7FFFFFFFFFFFFFFF +#define MCAUSE32_INT 0x80000000 +#define MCAUSE64_INT 0x8000000000000000 + +#define SSTATUS_UIE 0x00000001 +#define SSTATUS_SIE 0x00000002 +#define SSTATUS_UPIE 0x00000010 +#define SSTATUS_SPIE 0x00000020 +#define SSTATUS_SPP 0x00000100 +#define SSTATUS_FS 0x00006000 +#define SSTATUS_XS 0x00018000 +#define SSTATUS_PUM 0x00040000 +#define SSTATUS32_SD 0x80000000 +#define SSTATUS64_SD 0x8000000000000000 + +#define MIP_SSIP BIT(IRQ_S_SOFT) +#define MIP_HSIP BIT(IRQ_H_SOFT) +#define MIP_MSIP BIT(IRQ_M_SOFT) +#define MIP_STIP BIT(IRQ_S_TIMER) +#define MIP_HTIP BIT(IRQ_H_TIMER) +#define MIP_MTIP BIT(IRQ_M_TIMER) +#define MIP_SEIP BIT(IRQ_S_EXT) +#define MIP_HEIP BIT(IRQ_H_EXT) +#define MIP_MEIP BIT(IRQ_M_EXT) + +#define SIP_SSIP MIP_SSIP +#define SIP_STIP MIP_STIP + +#define PRV_U 0 +#define PRV_S 1 +#define PRV_H 2 +#define PRV_M 3 + +#define VM_MBARE 0 +#define VM_MBB 1 +#define VM_MBBID 2 +#define VM_SV32 8 +#define VM_SV39 9 +#define VM_SV48 10 + +#define IRQ_S_SOFT 1 +#define IRQ_H_SOFT 2 +#define IRQ_M_SOFT 3 +#define IRQ_S_TIMER 5 +#define IRQ_H_TIMER 6 +#define IRQ_M_TIMER 7 +#define IRQ_S_EXT 9 +#define IRQ_H_EXT 10 +#define IRQ_M_EXT 11 +#define IRQ_COP 12 +#define IRQ_HOST 13 + +#define DEFAULT_RSTVEC 0x00001000 +#define DEFAULT_NMIVEC 0x00001004 +#define DEFAULT_MTVEC 0x00001010 +#define CONFIG_STRING_ADDR 0x0000100C +#define EXT_IO_BASE 0x40000000 +#define DRAM_BASE 0x80000000 + +// page table entry (PTE) fields +#define PTE_V 0x001 // Valid +#define PTE_TYPE 0x01E // Type +#define PTE_R 0x020 // Referenced +#define PTE_D 0x040 // Dirty +#define PTE_SOFT 0x380 // Reserved for Software + +#define PTE_TYPE_TABLE 0x00 +#define PTE_TYPE_TABLE_GLOBAL 0x02 +#define PTE_TYPE_URX_SR 0x04 +#define PTE_TYPE_URWX_SRW 0x06 +#define PTE_TYPE_UR_SR 0x08 +#define PTE_TYPE_URW_SRW 0x0A +#define PTE_TYPE_URX_SRX 0x0C +#define PTE_TYPE_URWX_SRWX0x0E +#define PTE_TYPE_SR 0x10 +#define PTE_TYPE_SRW 0x12 +#define PTE_TYPE_SRX 0x14 +#define PTE_TYPE_SRWX 0x16 +#define PTE_TYPE_SR_GLOBAL 0x18 +#define PTE_TYPE_SRW_GLOBAL 0x1A +#define PTE_TYPE_SRX_GLOBAL 0x1C +#define PTE_TYPE_SRWX_GLOBAL 0x1E + +#define PTE_PPN_SHIFT 10 + +#define PTE_TABLE(PTE) ((0x0000000AU >> ((PTE) & 0x1F)) & 1) +#define PTE_UR(PTE) ((0x0000AAA0U >> ((PTE) & 0x1F)) & 1) +#define PTE_UW(PTE) ((0x00008880U >> ((PTE) & 0x1F)) & 1) +#define PTE_UX(PTE) ((0x0000A0A0U >> ((PTE) & 0x1F)) & 1) +#define PTE_SR(PTE) ((0xAAAAAAA0U >> ((PTE) & 0x1F)) & 1) +#define PTE_SW(PTE) ((0x88888880U >> ((PTE) & 0x1F)) & 1) +#define PTE_SX(PTE) ((0xA0A0A000U >> ((PTE) & 0x1F)) & 1) + +#define PTE_CHECK_PERM(PTE, SUPERVISOR, STORE, FETCH) \ + ((STORE) ? ((SUPERVISOR) ? PTE_SW(PTE) : PTE_UW(PTE)) : \ + (FETCH) ? ((SUPERVISOR) ? PTE_SX(PTE) : PTE_UX(PTE)) : \ + ((SUPERVISOR) ? PTE_SR(PTE) : PTE_UR(PTE))) + +#ifdef __riscv +#ifdef CONFIG_64BIT +# define MSTATUS_SD MSTATUS64_SD +# define SSTATUS_SD SSTATUS64_SD +# define MCAUSE_INT MCAUSE64_INT +# define MCAUSE_CAUSE MCAUSE64_CAUSE +# define RISCV_PGLEVEL_BITS 9 +#else +# define MSTATUS_SD MSTATUS32_SD +# define SSTATUS_SD SSTATUS32_SD +# define RISCV_PGLEVEL_BITS 10 +# define MCAUSE_INT MCAUSE32_INT +# define MCAUSE_CAUSE MCAUSE32_CAUSE +#endif +#define RISCV_PGSHIFT 12 +#define RISCV_PGSIZE BIT(RISCV_PGSHIFT) + +#ifndef __ASSEMBLER__ + +#ifdef __GNUC__ + +#define read_csr(reg) ({ unsigned long __tmp; \ + asm volatile ("csrr %0, " #reg : "=r"(__tmp)); \ + __tmp; }) + +#define write_csr(reg, val) ({ \ +if (__builtin_constant_p(val) && (unsigned long)(val) < 32) \ + asm volatile ("csrw " #reg ", %0" :: "i"(val)); \ +else \ + asm volatile ("csrw " #reg ", %0" :: "r"(val)); }) + +#define swap_csr(reg, val) ({ unsigned long __tmp; \ +if (__builtin_constant_p(val) && (unsigned long)(val) < 32) \ + asm volatile ("csrrw %0, " #reg ", %1" : "=r"(__tmp) : "i"(val)); \ +else \ + asm volatile ("csrrw %0, " #reg ", %1" : "=r"(__tmp) : "r"(val)); \ + __tmp; }) + +#define set_csr(reg, bit) ({ unsigned long __tmp; \ +if (__builtin_constant_p(bit) && (unsigned long)(bit) < 32) \ + asm volatile ("csrrs %0, " #reg ", %1" : "=r"(__tmp) : "i"(bit)); \ +else \ + asm volatile ("csrrs %0, " #reg ", %1" : "=r"(__tmp) : "r"(bit)); \ + __tmp; }) + +#define clear_csr(reg, bit) ({ unsigned long __tmp; \ +if (__builtin_constant_p(bit) && (unsigned long)(bit) < 32) \ + asm volatile ("csrrc %0, " #reg ", %1" : "=r"(__tmp) : "i"(bit)); \ +else \ + asm volatile ("csrrc %0, " #reg ", %1" : "=r"(__tmp) : "r"(bit)); \ + __tmp; }) + +#define rdtime() read_csr(time) +#define rdcycle() read_csr(cycle) +#define rdinstret() read_csr(instret) + +#endif +#endif +#endif +#endif diff --git a/arch/riscv/include/asm/global_data.h b/arch/riscv/include/asm/global_data.h new file mode 100644 index 0000000..0cce98a --- /dev/null +++ b/arch/riscv/include/asm/global_data.h @@ -0,0 +1,22 @@ +/* + * (C) Copyright 2002 + * Wolfgang Denk, DENX Software Engineering, wd@denx.de. + * + * Copyright (c) 2017 Microsemi Corporation. + * Padmarao Begari, Microsemi Corporation padmarao.begari@microsemi.com + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#ifndef __ASM_GBL_DATA_H +#define __ASM_GBL_DATA_H + +/* Architecture-specific global data */ +struct arch_global_data { +}; + +#include <asm-generic/global_data.h> + +#define DECLARE_GLOBAL_DATA_PTR register volatile gd_t *gd asm ("gp") + +#endif /* __ASM_GBL_DATA_H */ diff --git a/arch/riscv/include/asm/io.h b/arch/riscv/include/asm/io.h new file mode 100644 index 0000000..e7f63ed --- /dev/null +++ b/arch/riscv/include/asm/io.h @@ -0,0 +1,494 @@ +/* + * Copyright (C) 2017 Andes Technology Corporation + * Rick Chen, Andes Technology Corporation rick@andestech.com + * + * SPDX-License-Identifier: GPL-2.0 + * + */ +#ifndef __ASM_RISCV_IO_H +#define __ASM_RISCV_IO_H + +#ifdef __KERNEL__ + +#include <linux/types.h> +#include <asm/byteorder.h> + +static inline void sync(void) +{ +} + +/* + * Given a physical address and a length, return a virtual address + * that can be used to access the memory range with the caching + * properties specified by "flags". + */ +#define MAP_NOCACHE (0) +#define MAP_WRCOMBINE (0) +#define MAP_WRBACK (0) +#define MAP_WRTHROUGH (0) + +#ifdef CONFIG_ARCH_MAP_SYSMEM +static inline void *map_sysmem(phys_addr_t paddr, unsigned long len) +{ + if (paddr < PHYS_SDRAM_0_SIZE + PHYS_SDRAM_1_SIZE) + paddr = paddr | 0x40000000; + return (void *)(uintptr_t)paddr; +} + +static inline void *unmap_sysmem(const void *vaddr) +{ + phys_addr_t paddr = (phys_addr_t)vaddr; + + paddr = paddr & ~0x40000000; + return (void *)(uintptr_t)paddr; +} + +static inline phys_addr_t map_to_sysmem(const void *ptr) +{ + return (phys_addr_t)(uintptr_t)ptr; +} +#endif + +static inline void * +map_physmem(phys_addr_t paddr, unsigned long len, unsigned long flags) +{ + return (void *)paddr; +} + +/* + * Take down a mapping set up by map_physmem(). + */ +static inline void unmap_physmem(void *vaddr, unsigned long flags) +{ +} + +static inline phys_addr_t virt_to_phys(void *vaddr) +{ + return (phys_addr_t)(vaddr); +} + +/* + * Generic virtual read/write. Note that we don't support half-word + * read/writes. We define __arch_*[bl] here, and leave __arch_*w + * to the architecture specific code. + */ +#define __arch_getb(a) (*(unsigned char *)(a)) +#define __arch_getw(a) (*(unsigned short *)(a)) +#define __arch_getl(a) (*(unsigned int *)(a)) +#define __arch_getq(a) (*(unsigned long *)(a)) + +#define __arch_putb(v, a) (*(unsigned char *)(a) = (v)) +#define __arch_putw(v, a) (*(unsigned short *)(a) = (v)) +#define __arch_putl(v, a) (*(unsigned int *)(a) = (v)) +#define __arch_putq(v, a) (*(unsigned long *)(a) = (v)) + +#define __raw_writeb(v, a) __arch_putb(v, a) +#define __raw_writew(v, a) __arch_putw(v, a) +#define __raw_writel(v, a) __arch_putl(v, a) +#define __raw_writeq(v, a) __arch_putq(v, a) + +#define __raw_readb(a) __arch_getb(a) +#define __raw_readw(a) __arch_getw(a) +#define __raw_readl(a) __arch_getl(a) +#define __raw_readq(a) __arch_getq(a) + +/* + * TODO: The kernel offers some more advanced versions of barriers, it might + * have some advantages to use them instead of the simple one here. + */ +#define dmb() __asm__ __volatile__ ("" : : : "memory") +#define __iormb() dmb() +#define __iowmb() dmb() + +static inline void writeb(u8 val, volatile void __iomem *addr) +{ + __iowmb(); + __arch_putb(val, addr); +} + +static inline void writew(u16 val, volatile void __iomem *addr) +{ + __iowmb(); + __arch_putw(val, addr); +} + +static inline void writel(u32 val, volatile void __iomem *addr) +{ + __iowmb(); + __arch_putl(val, addr); +} + +static inline void writeq(u64 val, volatile void __iomem *addr) +{ + __iowmb(); + __arch_putq(val, addr); +} + +static inline u8 readb(const volatile void __iomem *addr) +{ + u8 val; + + val = __arch_getb(addr); + __iormb(); + return val; +} + +static inline u16 readw(const volatile void __iomem *addr) +{ + u16 val; + + val = __arch_getw(addr); + __iormb(); + return val; +} + +static inline u32 readl(const volatile void __iomem *addr) +{ + u32 val; + + val = __arch_getl(addr); + __iormb(); + return val; +} + +static inline u64 readq(const volatile void __iomem *addr) +{ + u32 val; + + val = __arch_getq(addr); + __iormb(); + return val; +} + +/* + * The compiler seems to be incapable of optimising constants + * properly. Spell it out to the compiler in some cases. + * These are only valid for small values of "off" (< 1<<12) + */ +#define __raw_base_writeb(val, base, off) __arch_base_putb(val, base, off) +#define __raw_base_writew(val, base, off) __arch_base_putw(val, base, off) +#define __raw_base_writel(val, base, off) __arch_base_putl(val, base, off) + +#define __raw_base_readb(base, off) __arch_base_getb(base, off) +#define __raw_base_readw(base, off) __arch_base_getw(base, off) +#define __raw_base_readl(base, off) __arch_base_getl(base, off) + +#define out_arch(type, endian, a, v) __raw_write##type(cpu_to_##endian(v), a) +#define in_arch(type, endian, a) endian##_to_cpu(__raw_read##type(a)) + +#define out_le32(a, v) out_arch(l, le32, a, v) +#define out_le16(a, v) out_arch(w, le16, a, v) + +#define in_le32(a) in_arch(l, le32, a) +#define in_le16(a) in_arch(w, le16, a) + +#define out_be32(a, v) out_arch(l, be32, a, v) +#define out_be16(a, v) out_arch(w, be16, a, v) + +#define in_be32(a) in_arch(l, be32, a) +#define in_be16(a) in_arch(w, be16, a) + +#define out_8(a, v) __raw_writeb(v, a) +#define in_8(a) __raw_readb(a) + +/* + * Clear and set bits in one shot. These macros can be used to clear and + * set multiple bits in a register using a single call. These macros can + * also be used to set a multiple-bit bit pattern using a mask, by + * specifying the mask in the 'clear' parameter and the new bit pattern + * in the 'set' parameter. + */ + +#define clrbits(type, addr, clear) \ + out_##type((addr), in_##type(addr) & ~(clear)) + +#define setbits(type, addr, set) \ + out_##type((addr), in_##type(addr) | (set)) + +#define clrsetbits(type, addr, clear, set) \ + out_##type((addr), (in_##type(addr) & ~(clear)) | (set)) + +#define clrbits_be32(addr, clear) clrbits(be32, addr, clear) +#define setbits_be32(addr, set) setbits(be32, addr, set) +#define clrsetbits_be32(addr, clear, set) clrsetbits(be32, addr, clear, set) + +#define clrbits_le32(addr, clear) clrbits(le32, addr, clear) +#define setbits_le32(addr, set) setbits(le32, addr, set) +#define clrsetbits_le32(addr, clear, set) clrsetbits(le32, addr, clear, set) + +#define clrbits_be16(addr, clear) clrbits(be16, addr, clear) +#define setbits_be16(addr, set) setbits(be16, addr, set) +#define clrsetbits_be16(addr, clear, set) clrsetbits(be16, addr, clear, set) + +#define clrbits_le16(addr, clear) clrbits(le16, addr, clear) +#define setbits_le16(addr, set) setbits(le16, addr, set) +#define clrsetbits_le16(addr, clear, set) clrsetbits(le16, addr, clear, set) + +#define clrbits_8(addr, clear) clrbits(8, addr, clear) +#define setbits_8(addr, set) setbits(8, addr, set) +#define clrsetbits_8(addr, clear, set) clrsetbits(8, addr, clear, set) + +/* + * Now, pick up the machine-defined IO definitions + * #include <asm/arch/io.h> + */ + +/* + * IO port access primitives + * ------------------------- + * + * The NDS32 doesn't have special IO access instructions just like ARM; + * all IO is memory mapped. + * Note that these are defined to perform little endian accesses + * only. Their primary purpose is to access PCI and ISA peripherals. + * + * Note that for a big endian machine, this implies that the following + * big endian mode connectivity is in place, as described by numerious + * ARM documents: + * + * PCI: D0-D7 D8-D15 D16-D23 D24-D31 + * ARM: D24-D31 D16-D23 D8-D15 D0-D7 + * + * The machine specific io.h include defines __io to translate an "IO" + * address to a memory address. + * + * Note that we prevent GCC re-ordering or caching values in expressions + * by introducing sequence points into the in*() definitions. Note that + * __raw_* do not guarantee this behaviour. + * + * The {in,out}[bwl] macros are for emulating x86-style PCI/ISA IO space. + */ +#ifdef __io +#define outb(v, p) __raw_writeb(v, __io(p)) +#define outw(v, p) __raw_writew(cpu_to_le16(v), __io(p)) +#define outl(v, p) __raw_writel(cpu_to_le32(v), __io(p)) + +#define inb(p) ({ unsigned int __v = __raw_readb(__io(p)); __v; }) +#define inw(p) ({ unsigned int __v = le16_to_cpu(__raw_readw(__io(p))); __v; }) +#define inl(p) ({ unsigned int __v = le32_to_cpu(__raw_readl(__io(p))); __v; }) + +#define outsb(p, d, l) writesb(__io(p), d, l) +#define outsw(p, d, l) writesw(__io(p), d, l) +#define outsl(p, d, l) writesl(__io(p), d, l) + +#define insb(p, d, l) readsb(__io(p), d, l) +#define insw(p, d, l) readsw(__io(p), d, l) +#define insl(p, d, l) readsl(__io(p), d, l) + +static inline void readsb(unsigned int *addr, void *data, int bytelen) +{ + unsigned char *ptr; + unsigned char *ptr2; + + ptr = (unsigned char *)addr; + ptr2 = (unsigned char *)data; + + while (bytelen) { + *ptr2 = *ptr; + ptr2++; + bytelen--; + } +} + +static inline void readsw(unsigned int *addr, void *data, int wordlen) +{ + unsigned short *ptr; + unsigned short *ptr2; + + ptr = (unsigned short *)addr; + ptr2 = (unsigned short *)data; + + while (wordlen) { + *ptr2 = *ptr; + ptr2++; + wordlen--; + } +} + +static inline void readsl(unsigned int *addr, void *data, int longlen) +{ + unsigned int *ptr; + unsigned int *ptr2; + + ptr = (unsigned int *)addr; + ptr2 = (unsigned int *)data; + + while (longlen) { + *ptr2 = *ptr; + ptr2++; + longlen--; + } +} + +static inline void writesb(unsigned int *addr, const void *data, int bytelen) +{ + unsigned char *ptr; + unsigned char *ptr2; + + ptr = (unsigned char *)addr; + ptr2 = (unsigned char *)data; + + while (bytelen) { + *ptr = *ptr2; + ptr2++; + bytelen--; + } +} + +static inline void writesw(unsigned int *addr, const void *data, int wordlen) +{ + unsigned short *ptr; + unsigned short *ptr2; + + ptr = (unsigned short *)addr; + ptr2 = (unsigned short *)data; + + while (wordlen) { + *ptr = *ptr2; + ptr2++; + wordlen--; + } +} + +static inline void writesl(unsigned int *addr, const void *data, int longlen) +{ + unsigned int *ptr; + unsigned int *ptr2; + + ptr = (unsigned int *)addr; + ptr2 = (unsigned int *)data; + + while (longlen) { + *ptr = *ptr2; + ptr2++; + longlen--; + } +} +#endif + +#define outb_p(val, port) outb((val), (port)) +#define outw_p(val, port) outw((val), (port)) +#define outl_p(val, port) outl((val), (port)) +#define inb_p(port) inb((port)) +#define inw_p(port) inw((port)) +#define inl_p(port) inl((port)) + +#define outsb_p(port, from, len) outsb(port, from, len) +#define outsw_p(port, from, len) outsw(port, from, len) +#define outsl_p(port, from, len) outsl(port, from, len) +#define insb_p(port, to, len) insb(port, to, len) +#define insw_p(port, to, len) insw(port, to, len) +#define insl_p(port, to, len) insl(port, to, len) + +/* + * DMA-consistent mapping functions. These allocate/free a region of + * uncached, unwrite-buffered mapped memory space for use with DMA + * devices. This is the "generic" version. The PCI specific version + * is in pci.h + */ + +/* + * String version of IO memory access ops: + */ + +/* + * If this architecture has PCI memory IO, then define the read/write + * macros. These should only be used with the cookie passed from + * ioremap. + */ +#ifdef __mem_pci + +#define readb(c) ({ unsigned int __v = \ + __raw_readb(__mem_pci(c)); __v; }) +#define readw(c) ({ unsigned int __v = \ + le16_to_cpu(__raw_readw(__mem_pci(c))); __v; }) +#define readl(c) ({ unsigned int __v = \ + le32_to_cpu(__raw_readl(__mem_pci(c))); __v; }) + +#define writeb(v, c) __raw_writeb(v, __mem_pci(c)) +#define writew(v, c) __raw_writew(cpu_to_le16(v), __mem_pci(c)) +#define writel(v, c) __raw_writel(cpu_to_le32(v), __mem_pci(c)) + +#define memset_io(c, v, l) _memset_io(__mem_pci(c), (v), (l)) +#define memcpy_fromio(a, c, l) _memcpy_fromio((a), __mem_pci(c), (l)) +#define memcpy_toio(c, a, l) _memcpy_toio(__mem_pci(c), (a), (l)) + +#define eth_io_copy_and_sum(s, c, l, b) \ + eth_copy_and_sum((s), __mem_pci(c), (l), (b)) + +static inline int +check_signature(unsigned long io_addr, const unsigned char *signature, + int length) +{ + int retval = 0; + + do { + if (readb(io_addr) != *signature) + goto out; + io_addr++; + signature++; + length--; + } while (length); + retval = 1; +out: + return retval; +} +#endif /* __mem_pci */ + +/* + * If this architecture has ISA IO, then define the isa_read/isa_write + * macros. + */ +#ifdef __mem_isa + +#define isa_readb(addr) __raw_readb(__mem_isa(addr)) +#define isa_readw(addr) __raw_readw(__mem_isa(addr)) +#define isa_readl(addr) __raw_readl(__mem_isa(addr)) +#define isa_writeb(val, addr) __raw_writeb(val, __mem_isa(addr)) +#define isa_writew(val, addr) __raw_writew(val, __mem_isa(addr)) +#define isa_writel(val, addr) __raw_writel(val, __mem_isa(addr)) +#define isa_memset_io(a, b, c) _memset_io(__mem_isa(a), (b), (c)) +#define isa_memcpy_fromio(a, b, c) _memcpy_fromio((a), __mem_isa(b), (c)) +#define isa_memcpy_toio(a, b, c) _memcpy_toio(__mem_isa((a)), (b), (c)) + +#define isa_eth_io_copy_and_sum(a, b, c, d) \ + eth_copy_and_sum((a), __mem_isa(b), (c), (d)) + +static inline int +isa_check_signature(unsigned long io_addr, const unsigned char *signature, + int length) +{ + int retval = 0; + + do { + if (isa_readb(io_addr) != *signature) + goto out; + io_addr++; + signature++; + length--; + } while (length); + retval = 1; +out: + return retval; +} + +#else /* __mem_isa */ + +#define isa_readb(addr) (__readwrite_bug("isa_readb"), 0) +#define isa_readw(addr) (__readwrite_bug("isa_readw"), 0) +#define isa_readl(addr) (__readwrite_bug("isa_readl"), 0) +#define isa_writeb(val, addr) __readwrite_bug("isa_writeb") +#define isa_writew(val, addr) __readwrite_bug("isa_writew") +#define isa_writel(val, addr) __readwrite_bug("isa_writel") +#define isa_memset_io(a, b, c) __readwrite_bug("isa_memset_io") +#define isa_memcpy_fromio(a, b, c) __readwrite_bug("isa_memcpy_fromio") +#define isa_memcpy_toio(a, b, c) __readwrite_bug("isa_memcpy_toio") + +#define isa_eth_io_copy_and_sum(a, b, c, d) \ + __readwrite_bug("isa_eth_io_copy_and_sum") + +#define isa_check_signature(io, sig, len) (0) + +#endif /* __mem_isa */ +#endif /* __KERNEL__ */ +#endif /* __ASM_RISCV_IO_H */ diff --git a/arch/riscv/include/asm/linkage.h b/arch/riscv/include/asm/linkage.h new file mode 100644 index 0000000..60d5317 --- /dev/null +++ b/arch/riscv/include/asm/linkage.h @@ -0,0 +1,12 @@ +/* + * U-Boot - linkage.h + * + * Copyright (c) 2005-2007 Analog Devices Inc. + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#ifndef __ASM_LINKAGE_H +#define __ASM_LINKAGE_H + +#endif diff --git a/arch/riscv/include/asm/mach-types.h b/arch/riscv/include/asm/mach-types.h new file mode 100644 index 0000000..f70b407 --- /dev/null +++ b/arch/riscv/include/asm/mach-types.h @@ -0,0 +1,30 @@ +/* + * Copyright (C) 2017 Andes Technology Corporation + * Rick Chen, Andes Technology Corporation rick@andestech.com + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#ifndef __ASM_RISCV_MACH_TYPE_H +#define __ASM_RISCV_MACH_TYPE_H + +#ifndef __ASSEMBLY__ +/* The type of machine we're running on */ +extern unsigned int __machine_arch_type; +#endif + +#define MACH_TYPE_AE250 1 + +#ifdef CONFIG_ARCH_AE250 +# ifdef machine_arch_type +# undef machine_arch_type +# define machine_arch_type __machine_arch_type +# else +# define machine_arch_type MACH_TYPE_AE250 +# endif +# define machine_is_ae250() (machine_arch_type == MACH_TYPE_AE250) +#else +# define machine_is_ae250() (1) +#endif + +#endif /* __ASM_RISCV_MACH_TYPE_H */ diff --git a/arch/riscv/include/asm/posix_types.h b/arch/riscv/include/asm/posix_types.h new file mode 100644 index 0000000..6892b66 --- /dev/null +++ b/arch/riscv/include/asm/posix_types.h @@ -0,0 +1,89 @@ +/* + * linux/include/asm-arm/posix_types.h + * + * Copyright (C) 1996-1998 Russell King. + * + * Copyright (C) 2011 Andes Technology Corporation + * Copyright (C) 2010 Shawn Lin (nobuhiro@andestech.com) + * Copyright (C) 2011 Macpaul Lin (macpaul@andestech.com) + * Copyright (C) 2017 Rick Chen (rick@andestech.com) + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * Changelog: + * 27-06-1996 RMK Created + * 25-10-2017 Modified for arch RISCV + */ +#ifndef __ARCH_RISCV_POSIX_TYPES_H +#define __ARCH_RISCV_POSIX_TYPES_H + +/* + * This file is generally used by user-level software, so you need to + * be a little careful about namespace pollution etc. Also, we cannot + * assume GCC is being used. + */ + +typedef unsigned short __kernel_dev_t; +typedef unsigned long __kernel_ino_t; +typedef unsigned short __kernel_mode_t; +typedef unsigned short __kernel_nlink_t; +typedef long __kernel_off_t; +typedef int __kernel_pid_t; +typedef unsigned short __kernel_ipc_pid_t; +typedef unsigned short __kernel_uid_t; +typedef unsigned short __kernel_gid_t; +#ifdef __GNUC__ +typedef __SIZE_TYPE__ __kernel_size_t; +#else +typedef unsigned int __kernel_size_t; +#endif +typedef int __kernel_ssize_t; +typedef int __kernel_ptrdiff_t; +typedef long __kernel_time_t; +typedef long __kernel_suseconds_t; +typedef long __kernel_clock_t; +typedef int __kernel_daddr_t; +typedef char *__kernel_caddr_t; +typedef unsigned short __kernel_uid16_t; +typedef unsigned short __kernel_gid16_t; +typedef unsigned int __kernel_uid32_t; +typedef unsigned int __kernel_gid32_t; + +typedef unsigned short __kernel_old_uid_t; +typedef unsigned short __kernel_old_gid_t; + +#ifdef __GNUC__ +typedef long long __kernel_loff_t; +#endif + +typedef struct { +#if defined(__KERNEL__) || defined(__USE_ALL) + int val[2]; +#else /* !defined(__KERNEL__) && !defined(__USE_ALL) */ + int __val[2]; +#endif /* !defined(__KERNEL__) && !defined(__USE_ALL) */ +} __kernel_fsid_t; + +#if defined(__KERNEL__) || !defined(__GLIBC__) || (__GLIBC__ < 2) + +#undef __FD_SET +#define __FD_SET(fd, fdsetp) \ + (((fd_set *)fdsetp)->fds_bits[fd >> 5] |= (1 << (fd & 31))) + +#undef __FD_CLR +#define __FD_CLR(fd, fdsetp) \ + (((fd_set *)fdsetp)->fds_bits[fd >> 5] &= ~(1 << (fd & 31))) + +#undef __FD_ISSET +#define __FD_ISSET(fd, fdsetp) \ + ((((fd_set *)fdsetp)->fds_bits[fd >> 5] & (1 << (fd & 31))) != 0) + +#undef __FD_ZERO +#define __FD_ZERO(fdsetp) \ + (memset(fdsetp, 0, sizeof(*(fd_set *)fdsetp))) + +#endif + +#endif /* __ARCH_RISCV_POSIX_TYPES_H */ diff --git a/arch/riscv/include/asm/processor.h b/arch/riscv/include/asm/processor.h new file mode 100644 index 0000000..fe35752 --- /dev/null +++ b/arch/riscv/include/asm/processor.h @@ -0,0 +1,26 @@ +/* + * linux/include/asm-arm/processor.h + * + * Copyright (C) 1995-2002 Russell King + * + * Copyright (C) 2011 Andes Technology Corporation + * Copyright (C) 2010 Shawn Lin (nobuhiro@andestech.com) + * Copyright (C) 2011 Macpaul Lin (macpaul@andestech.com) + * Copyright (C) 2017 Rick Chen (rick@andestech.com) + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef __ASM_RISCV_PROCESSOR_H +#define __ASM_RISCV_PROCESSOR_H + +/************************************************************** + * CAUTION: + * - do not implement for RISCV Arch yet. + * - so far some files include /asm/processor.h, but + * no one uses the macros defined in this head file. + **************************************************************/ + +#endif /* __ASM_RISCV_PROCESSOR_H */ diff --git a/arch/riscv/include/asm/ptrace.h b/arch/riscv/include/asm/ptrace.h new file mode 100644 index 0000000..76d6869 --- /dev/null +++ b/arch/riscv/include/asm/ptrace.h @@ -0,0 +1,106 @@ +/* + * Copyright (c) 2017 Microsemi Corporation. + * Copyright (c) 2017 Padmarao Begari Padmarao.Begari@microsemi.com + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ +#ifndef __ASM_RISCV_PTRACE_H +#define __ASM_RISCV_PTRACE_H + +struct pt_regs { + unsigned long sepc; + unsigned long ra; + unsigned long sp; + unsigned long gp; + unsigned long tp; + unsigned long t0; + unsigned long t1; + unsigned long t2; + unsigned long s0; + unsigned long s1; + unsigned long a0; + unsigned long a1; + unsigned long a2; + unsigned long a3; + unsigned long a4; + unsigned long a5; + unsigned long a6; + unsigned long a7; + unsigned long s2; + unsigned long s3; + unsigned long s4; + unsigned long s5; + unsigned long s6; + unsigned long s7; + unsigned long s8; + unsigned long s9; + unsigned long s10; + unsigned long s11; + unsigned long t3; + unsigned long t4; + unsigned long t5; + unsigned long t6; + /* Supervisor CSRs */ + unsigned long sstatus; + unsigned long sbadaddr; + unsigned long scause; +}; + +#ifdef CONFIG_64BIT +#define REG_FMT "%016lx" +#else +#define REG_FMT "%08lx" +#endif + +#define user_mode(regs) (((regs)->sstatus & SR_PS) == 0) + +/* Helpers for working with the instruction pointer */ +#define GET_IP(regs) ((regs)->sepc) +#define SET_IP(regs, val) (GET_IP(regs) = (val)) + +static inline unsigned long instruction_pointer(struct pt_regs *regs) +{ + return GET_IP(regs); +} + +static inline void instruction_pointer_set(struct pt_regs *regs, + unsigned long val) +{ + SET_IP(regs, val); +} + +#define profile_pc(regs) instruction_pointer(regs) + +/* Helpers for working with the user stack pointer */ +#define GET_USP(regs) ((regs)->sp) +#define SET_USP(regs, val) (GET_USP(regs) = (val)) + +static inline unsigned long user_stack_pointer(struct pt_regs *regs) +{ + return GET_USP(regs); +} + +static inline void user_stack_pointer_set(struct pt_regs *regs, + unsigned long val) +{ + SET_USP(regs, val); +} + +/* Helpers for working with the frame pointer */ +#define GET_FP(regs) ((regs)->s0) +#define SET_FP(regs, val) (GET_FP(regs) = (val)) + +static inline unsigned long frame_pointer(struct pt_regs *regs) +{ + return GET_FP(regs); +} + +static inline void frame_pointer_set(struct pt_regs *regs, + unsigned long val) +{ + SET_FP(regs, val); +} + +#endif /* __ASM_RISCV_PTRACE_H */ diff --git a/arch/riscv/include/asm/sections.h b/arch/riscv/include/asm/sections.h new file mode 100644 index 0000000..9faa099 --- /dev/null +++ b/arch/riscv/include/asm/sections.h @@ -0,0 +1,11 @@ +/* + * Copyright (c) 2012 The Chromium OS Authors. + * SPDX-License-Identifier: GPL-2.0+ + */ + +#ifndef __ASM_RISCV_SECTIONS_H +#define __ASM_RISCV_SECTIONS_H + +#include <asm-generic/sections.h> + +#endif diff --git a/arch/riscv/include/asm/setup.h b/arch/riscv/include/asm/setup.h new file mode 100644 index 0000000..731b0d9 --- /dev/null +++ b/arch/riscv/include/asm/setup.h @@ -0,0 +1,191 @@ +/* + * linux/arch/nds32/include/asm/setup.h + * + * Copyright (C) 1997-1999 Russell King + * Copyright (C) 2008 Andes Technology Corporation + * Copyright (C) 2013 Ken Kuo (ken_kuo@andestech.com) + * Copyright (C) 2017 Rick Chen (rick@andestech.com) + * + * SPDX-License-Identifier: GPL-2.0 + * + * Structure passed to kernel to tell it about the + * hardware it's running on. See Documentation/arm/Setup + * for more info. + */ +#ifndef __RISCV_SETUP_H +#define __RISCV_SETUP_H + +#define COMMAND_LINE_SIZE 256 + +/* The list ends with an ATAG_NONE node. */ +#define ATAG_NONE 0x00000000 + +struct tag_header { + u32 size; + u32 tag; +}; + +/* The list must start with an ATAG_CORE node */ +#define ATAG_CORE 0x54410001 + +struct tag_core { + u32 flags; /* bit 0 = read-only */ + u32 pagesize; + u32 rootdev; +}; + +/* it is allowed to have multiple ATAG_MEM nodes */ +#define ATAG_MEM 0x54410002 + +struct tag_mem32 { + u32 size; + u32 start; /* physical start address */ +}; + +/* VGA text type displays */ +#define ATAG_VIDEOTEXT 0x54410003 + +struct tag_videotext { + u8 x; + u8 y; + u16 video_page; + u8 video_mode; + u8 video_cols; + u16 video_ega_bx; + u8 video_lines; + u8 video_isvga; + u16 video_points; +}; + +/* describes how the ramdisk will be used in kernel */ +#define ATAG_RAMDISK 0x54410004 + +struct tag_ramdisk { + u32 flags; /* bit 0 = load, bit 1 = prompt */ + u32 size; /* decompressed ramdisk size in _kilo_ bytes */ + u32 start; /* starting block of floppy-based RAM disk image */ +}; + +/* + * this one accidentally used virtual addresses - as such, + * it's deprecated. + * describes where the compressed ramdisk image lives (virtual address) + */ +#define ATAG_INITRD 0x54410005 + +/* describes where the compressed ramdisk image lives (physical address) */ +#define ATAG_INITRD2 0x54420005 + +struct tag_initrd { + u32 start; /* physical start address */ + u32 size; /* size of compressed ramdisk image in bytes */ +}; + +/* board serial number. "64 bits should be enough for everybody" */ +#define ATAG_SERIAL 0x54410006 + +struct tag_serialnr { + u32 low; + u32 high; +}; + +/* board revision */ +#define ATAG_REVISION 0x54410007 + +struct tag_revision { + u32 rev; +}; + +/* initial values for vesafb-type framebuffers. see struct screen_info + * in include/linux/tty.h + */ +#define ATAG_VIDEOLFB 0x54410008 + +struct tag_videolfb { + u16 lfb_width; + u16 lfb_height; + u16 lfb_depth; + u16 lfb_linelength; + u32 lfb_base; + u32 lfb_size; + u8 red_size; + u8 red_pos; + u8 green_size; + u8 green_pos; + u8 blue_size; + u8 blue_pos; + u8 rsvd_size; + u8 rsvd_pos; +}; + +/* command line: \0 terminated string */ +#define ATAG_CMDLINE 0x54410009 + +struct tag_cmdline { + char cmdline[COMMAND_LINE_SIZE]; +}; + +struct tag { + struct tag_header hdr; + union { + struct tag_core core; + struct tag_mem32 mem; + struct tag_videotext videotext; + struct tag_ramdisk ramdisk; + struct tag_initrd initrd; + struct tag_serialnr serialnr; + struct tag_revision revision; + struct tag_videolfb videolfb; + struct tag_cmdline cmdline; + } u; +}; + +struct tagtable { + u32 tag; + int (*parse)(const struct tag *); +}; + +#define tag_member_present(tag, member) \ + ((unsigned long)(&((struct tag *)0L)->member + 1) \ + <= (tag)->hdr.size * 4) + +#define tag_next(t) ((struct tag *)((u32 *)(t) + (t)->hdr.size)) +#define tag_size(type) ((sizeof(struct tag_header) + sizeof(struct type)) >> 2) + +#define for_each_tag(t, base) \ + for (t = base; t->hdr.size; t = tag_next(t)) + +#ifdef __KERNEL__ + +#define __tag __used __attribute__((__section__(".taglist"))) +#define __tagtable(tag, fn) \ +static struct tagtable __tagtable_##fn __tag = { tag, fn } + +/* + * Memory map description + */ +#define NR_BANKS 8 + +struct meminfo { + int nr_banks; + struct { + unsigned long start; + unsigned long size; + int node; + } bank[NR_BANKS]; +}; + +/* + * Early command line parameters. + */ +struct early_params { + const char *arg; + void (*fn)(char **p); +}; + +#define __early_param(name, fn) \ +static struct early_params __early_##fn __used \ +__attribute__((__section__("__early_param"))) = { name, fn } + +#endif +#endif diff --git a/arch/riscv/include/asm/string.h b/arch/riscv/include/asm/string.h new file mode 100644 index 0000000..038cdae --- /dev/null +++ b/arch/riscv/include/asm/string.h @@ -0,0 +1,43 @@ +/* + * Copyright (C) 2011 Andes Technology Corporation + * Copyright (C) 2010 Shawn Lin (nobuhiro@andestech.com) + * Copyright (C) 2011 Macpaul Lin (macpaul@andestech.com) + * Copyright (C) 2017 Rick Chen (rick@andestech.com) + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + */ + +#ifndef __ASM_RISCV_STRING_H +#define __ASM_RISCV_STRING_H + +/* + * We don't do inline string functions, since the + * optimised inline asm versions are not small. + */ + +#undef __HAVE_ARCH_STRRCHR +#undef __HAVE_ARCH_STRCHR +#undef __HAVE_ARCH_MEMCPY +#undef __HAVE_ARCH_MEMMOVE +#undef __HAVE_ARCH_MEMCHR +#undef __HAVE_ARCH_MEMZERO +#undef __HAVE_ARCH_MEMSET + +#ifdef CONFIG_MARCO_MEMSET +#define memset(p, v, n) \ + ({ \ + if ((n) != 0) { \ + if (__builtin_constant_p((v)) && (v) == 0) \ + __memzero((p), (n)); \ + else \ + memset((p), (v), (n)); \ + } \ + (p); \ + }) + +#define memzero(p, n) ({ if ((n) != 0) __memzero((p), (n)); (p); }) +#endif + +#endif /* __ASM_RISCV_STRING_H */ diff --git a/arch/riscv/include/asm/system.h b/arch/riscv/include/asm/system.h new file mode 100644 index 0000000..443a300 --- /dev/null +++ b/arch/riscv/include/asm/system.h @@ -0,0 +1,18 @@ +/* + * Copyright (C) 2017 Andes Technology Corporation + * Rick Chen, Andes Technology Corporation rick@andestech.com + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#ifndef __ASM_RISCV_SYSTEM_H +#define __ASM_RISCV_SYSTEM_H + +/* + * Interrupt configuring macros. + * + * TODO + * + */ + +#endif /* __ASM_RISCV_SYSTEM_H */ diff --git a/arch/riscv/include/asm/types.h b/arch/riscv/include/asm/types.h new file mode 100644 index 0000000..9797206 --- /dev/null +++ b/arch/riscv/include/asm/types.h @@ -0,0 +1,64 @@ +/* + * Copyright (C) 2011 Andes Technology Corporation + * Copyright (C) 2010 Shawn Lin (nobuhiro@andestech.com) + * Copyright (C) 2011 Macpaul Lin (macpaul@andestech.com) + * Copyright (C) 2017 Rick Chen (rick@andestech.com) + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + */ + +#ifndef __ASM_RISCV_TYPES_H +#define __ASM_RISCV_TYPES_H + +typedef unsigned short umode_t; + +/* + * __xx is ok: it doesn't pollute the POSIX namespace. Use these in the + * header files exported to user space + */ + +typedef __signed__ char __s8; +typedef unsigned char __u8; + +typedef __signed__ short __s16; +typedef unsigned short __u16; + +typedef __signed__ int __s32; +typedef unsigned int __u32; + +#if defined(__GNUC__) && !defined(__STRICT_ANSI__) +typedef __signed__ long long __s64; +typedef unsigned long long __u64; +#endif + +/* + * These aren't exported outside the kernel to avoid name space clashes + */ +#ifdef __KERNEL__ + +typedef signed char s8; +typedef unsigned char u8; + +typedef signed short s16; +typedef unsigned short u16; + +typedef signed int s32; +typedef unsigned int u32; + +typedef signed long long s64; +typedef unsigned long long u64; + +#define BITS_PER_LONG 32 + +#include <stddef.h> + +typedef u32 dma_addr_t; + +typedef unsigned long phys_addr_t; +typedef unsigned long phys_size_t; + +#endif /* __KERNEL__ */ + +#endif diff --git a/arch/riscv/include/asm/u-boot-riscv.h b/arch/riscv/include/asm/u-boot-riscv.h new file mode 100644 index 0000000..18099cd --- /dev/null +++ b/arch/riscv/include/asm/u-boot-riscv.h @@ -0,0 +1,21 @@ +/* + * (C) Copyright 2002 + * Sysgo Real-Time Solutions, GmbH <www.elinos.com> + * Marius Groeger mgroeger@sysgo.de + * + * Copyright (C) 2017 Andes Technology Corporation + * Rick Chen, Andes Technology Corporation rick@andestech.com + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#ifndef _U_BOOT_RISCV_H_ +#define _U_BOOT_RISCV_H_ 1 + +/* cpu/.../cpu.c */ +int cleanup_before_linux(void); + +/* board/.../... */ +int board_init(void); + +#endif /* _U_BOOT_RISCV_H_ */ diff --git a/arch/riscv/include/asm/u-boot.h b/arch/riscv/include/asm/u-boot.h new file mode 100644 index 0000000..ddf7a63 --- /dev/null +++ b/arch/riscv/include/asm/u-boot.h @@ -0,0 +1,46 @@ +/* + * (C) Copyright 2002 + * Sysgo Real-Time Solutions, GmbH <www.elinos.com> + * Marius Groeger mgroeger@sysgo.de + * + * Copyright (C) 2017 Andes Technology Corporation + * Rick Chen, Andes Technology Corporation rick@andestech.com + * + * SPDX-License-Identifier: GPL-2.0+ + * + ******************************************************************** + * NOTE: This header file defines an interface to U-Boot. Including + * this (unmodified) header file in another file is considered normal + * use of U-Boot, and does *not* fall under the heading of "derived + * work". + ******************************************************************** + */ + +#ifndef _U_BOOT_H_ +#define _U_BOOT_H_ 1 + +#include <asm/u-boot-riscv.h> + +#include <environment.h> + +typedef struct bd_info { + unsigned long bi_arch_number; /* unique id for this board */ + unsigned long bi_boot_params; /* where this board expects params */ + unsigned long bi_memstart; /* start of DRAM memory */ + unsigned long bi_memsize; /* size of DRAM memory in bytes */ + unsigned long bi_flashstart; /* start of FLASH memory */ + unsigned long bi_flashsize; /* size of FLASH memory */ + unsigned long bi_flashoffset; /* reserved area for startup monitor */ + unsigned char bi_enetaddr[6]; + + struct /* RAM configuration */ + { + unsigned long start; + unsigned long size; + } bi_dram[CONFIG_NR_DRAM_BANKS]; +} bd_t; + +/* For image.h:image_check_target_arch() */ +#define IH_ARCH_DEFAULT IH_ARCH_RISCV + +#endif /* _U_BOOT_H_ */ diff --git a/arch/riscv/include/asm/unaligned.h b/arch/riscv/include/asm/unaligned.h new file mode 100644 index 0000000..6cecbbb --- /dev/null +++ b/arch/riscv/include/asm/unaligned.h @@ -0,0 +1 @@ +#include <asm-generic/unaligned.h>