Commit b19b9282 authored by Linus Torvalds's avatar Linus Torvalds

Merge tag 'riscv-for-linus-4.18-rc4' of...

Merge tag 'riscv-for-linus-4.18-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/palmer/riscv-linux

Pull RISC-V fixes from Palmer Dabbelt:
 "This contains a handful of fixes for the RISC-V port:

   - A fix to R_RISCV_ADD32/R_RISCV_SUB32 relocations that allows
     modules that use these to load correctly.

   - The removal of of_platform_populate(), which is obselete.

   - The removal of irq-riscv-intc.h, which is obselete.

   - A fix to PTRACE_SETREGSET.

   - Fixes that allow the RV32I kernel to build (at least for Zong, I've
     got another patch on the mailing list that's necessary on my setup :)).

  I've just given these a defconfig build test"

* tag 'riscv-for-linus-4.18-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/palmer/riscv-linux:
  RISC-V: Fix PTRACE_SETREGSET bug.
  RISC-V: Don't include irq-riscv-intc.h
  riscv: remove unnecessary of_platform_populate call
  RISC-V: fix R_RISCV_ADD32/R_RISCV_SUB32 relocations
  RISC-V: Change variable type for 32-bit compatible
  RISC-V: Add definiion of extract symbol's index and type for 32-bit
  RISC-V: Select GENERIC_UCMPDI2 on RV32I
  RISC-V: Add conditional macro for zone of DMA32
parents 760885f2 9a6a5115
...@@ -107,6 +107,7 @@ config ARCH_RV32I ...@@ -107,6 +107,7 @@ config ARCH_RV32I
select GENERIC_LIB_ASHLDI3 select GENERIC_LIB_ASHLDI3
select GENERIC_LIB_ASHRDI3 select GENERIC_LIB_ASHRDI3
select GENERIC_LIB_LSHRDI3 select GENERIC_LIB_LSHRDI3
select GENERIC_LIB_UCMPDI2
config ARCH_RV64I config ARCH_RV64I
bool "RV64I" bool "RV64I"
......
...@@ -21,8 +21,13 @@ typedef struct user_regs_struct elf_gregset_t; ...@@ -21,8 +21,13 @@ typedef struct user_regs_struct elf_gregset_t;
typedef union __riscv_fp_state elf_fpregset_t; typedef union __riscv_fp_state elf_fpregset_t;
#define ELF_RISCV_R_SYM(r_info) ((r_info) >> 32) #if __riscv_xlen == 64
#define ELF_RISCV_R_TYPE(r_info) ((r_info) & 0xffffffff) #define ELF_RISCV_R_SYM(r_info) ELF64_R_SYM(r_info)
#define ELF_RISCV_R_TYPE(r_info) ELF64_R_TYPE(r_info)
#else
#define ELF_RISCV_R_SYM(r_info) ELF32_R_SYM(r_info)
#define ELF_RISCV_R_TYPE(r_info) ELF32_R_TYPE(r_info)
#endif
/* /*
* RISC-V relocation types * RISC-V relocation types
......
...@@ -16,10 +16,6 @@ ...@@ -16,10 +16,6 @@
#include <linux/irqchip.h> #include <linux/irqchip.h>
#include <linux/irqdomain.h> #include <linux/irqdomain.h>
#ifdef CONFIG_RISCV_INTC
#include <linux/irqchip/irq-riscv-intc.h>
#endif
void __init init_IRQ(void) void __init init_IRQ(void)
{ {
irqchip_init(); irqchip_init();
......
...@@ -37,7 +37,7 @@ static int apply_r_riscv_64_rela(struct module *me, u32 *location, Elf_Addr v) ...@@ -37,7 +37,7 @@ static int apply_r_riscv_64_rela(struct module *me, u32 *location, Elf_Addr v)
static int apply_r_riscv_branch_rela(struct module *me, u32 *location, static int apply_r_riscv_branch_rela(struct module *me, u32 *location,
Elf_Addr v) Elf_Addr v)
{ {
s64 offset = (void *)v - (void *)location; ptrdiff_t offset = (void *)v - (void *)location;
u32 imm12 = (offset & 0x1000) << (31 - 12); u32 imm12 = (offset & 0x1000) << (31 - 12);
u32 imm11 = (offset & 0x800) >> (11 - 7); u32 imm11 = (offset & 0x800) >> (11 - 7);
u32 imm10_5 = (offset & 0x7e0) << (30 - 10); u32 imm10_5 = (offset & 0x7e0) << (30 - 10);
...@@ -50,7 +50,7 @@ static int apply_r_riscv_branch_rela(struct module *me, u32 *location, ...@@ -50,7 +50,7 @@ static int apply_r_riscv_branch_rela(struct module *me, u32 *location,
static int apply_r_riscv_jal_rela(struct module *me, u32 *location, static int apply_r_riscv_jal_rela(struct module *me, u32 *location,
Elf_Addr v) Elf_Addr v)
{ {
s64 offset = (void *)v - (void *)location; ptrdiff_t offset = (void *)v - (void *)location;
u32 imm20 = (offset & 0x100000) << (31 - 20); u32 imm20 = (offset & 0x100000) << (31 - 20);
u32 imm19_12 = (offset & 0xff000); u32 imm19_12 = (offset & 0xff000);
u32 imm11 = (offset & 0x800) << (20 - 11); u32 imm11 = (offset & 0x800) << (20 - 11);
...@@ -63,7 +63,7 @@ static int apply_r_riscv_jal_rela(struct module *me, u32 *location, ...@@ -63,7 +63,7 @@ static int apply_r_riscv_jal_rela(struct module *me, u32 *location,
static int apply_r_riscv_rcv_branch_rela(struct module *me, u32 *location, static int apply_r_riscv_rcv_branch_rela(struct module *me, u32 *location,
Elf_Addr v) Elf_Addr v)
{ {
s64 offset = (void *)v - (void *)location; ptrdiff_t offset = (void *)v - (void *)location;
u16 imm8 = (offset & 0x100) << (12 - 8); u16 imm8 = (offset & 0x100) << (12 - 8);
u16 imm7_6 = (offset & 0xc0) >> (6 - 5); u16 imm7_6 = (offset & 0xc0) >> (6 - 5);
u16 imm5 = (offset & 0x20) >> (5 - 2); u16 imm5 = (offset & 0x20) >> (5 - 2);
...@@ -78,7 +78,7 @@ static int apply_r_riscv_rcv_branch_rela(struct module *me, u32 *location, ...@@ -78,7 +78,7 @@ static int apply_r_riscv_rcv_branch_rela(struct module *me, u32 *location,
static int apply_r_riscv_rvc_jump_rela(struct module *me, u32 *location, static int apply_r_riscv_rvc_jump_rela(struct module *me, u32 *location,
Elf_Addr v) Elf_Addr v)
{ {
s64 offset = (void *)v - (void *)location; ptrdiff_t offset = (void *)v - (void *)location;
u16 imm11 = (offset & 0x800) << (12 - 11); u16 imm11 = (offset & 0x800) << (12 - 11);
u16 imm10 = (offset & 0x400) >> (10 - 8); u16 imm10 = (offset & 0x400) >> (10 - 8);
u16 imm9_8 = (offset & 0x300) << (12 - 11); u16 imm9_8 = (offset & 0x300) << (12 - 11);
...@@ -96,7 +96,7 @@ static int apply_r_riscv_rvc_jump_rela(struct module *me, u32 *location, ...@@ -96,7 +96,7 @@ static int apply_r_riscv_rvc_jump_rela(struct module *me, u32 *location,
static int apply_r_riscv_pcrel_hi20_rela(struct module *me, u32 *location, static int apply_r_riscv_pcrel_hi20_rela(struct module *me, u32 *location,
Elf_Addr v) Elf_Addr v)
{ {
s64 offset = (void *)v - (void *)location; ptrdiff_t offset = (void *)v - (void *)location;
s32 hi20; s32 hi20;
if (offset != (s32)offset) { if (offset != (s32)offset) {
...@@ -178,7 +178,7 @@ static int apply_r_riscv_lo12_s_rela(struct module *me, u32 *location, ...@@ -178,7 +178,7 @@ static int apply_r_riscv_lo12_s_rela(struct module *me, u32 *location,
static int apply_r_riscv_got_hi20_rela(struct module *me, u32 *location, static int apply_r_riscv_got_hi20_rela(struct module *me, u32 *location,
Elf_Addr v) Elf_Addr v)
{ {
s64 offset = (void *)v - (void *)location; ptrdiff_t offset = (void *)v - (void *)location;
s32 hi20; s32 hi20;
/* Always emit the got entry */ /* Always emit the got entry */
...@@ -200,7 +200,7 @@ static int apply_r_riscv_got_hi20_rela(struct module *me, u32 *location, ...@@ -200,7 +200,7 @@ static int apply_r_riscv_got_hi20_rela(struct module *me, u32 *location,
static int apply_r_riscv_call_plt_rela(struct module *me, u32 *location, static int apply_r_riscv_call_plt_rela(struct module *me, u32 *location,
Elf_Addr v) Elf_Addr v)
{ {
s64 offset = (void *)v - (void *)location; ptrdiff_t offset = (void *)v - (void *)location;
s32 fill_v = offset; s32 fill_v = offset;
u32 hi20, lo12; u32 hi20, lo12;
...@@ -227,7 +227,7 @@ static int apply_r_riscv_call_plt_rela(struct module *me, u32 *location, ...@@ -227,7 +227,7 @@ static int apply_r_riscv_call_plt_rela(struct module *me, u32 *location,
static int apply_r_riscv_call_rela(struct module *me, u32 *location, static int apply_r_riscv_call_rela(struct module *me, u32 *location,
Elf_Addr v) Elf_Addr v)
{ {
s64 offset = (void *)v - (void *)location; ptrdiff_t offset = (void *)v - (void *)location;
s32 fill_v = offset; s32 fill_v = offset;
u32 hi20, lo12; u32 hi20, lo12;
...@@ -263,14 +263,14 @@ static int apply_r_riscv_align_rela(struct module *me, u32 *location, ...@@ -263,14 +263,14 @@ static int apply_r_riscv_align_rela(struct module *me, u32 *location,
static int apply_r_riscv_add32_rela(struct module *me, u32 *location, static int apply_r_riscv_add32_rela(struct module *me, u32 *location,
Elf_Addr v) Elf_Addr v)
{ {
*(u32 *)location += (*(u32 *)v); *(u32 *)location += (u32)v;
return 0; return 0;
} }
static int apply_r_riscv_sub32_rela(struct module *me, u32 *location, static int apply_r_riscv_sub32_rela(struct module *me, u32 *location,
Elf_Addr v) Elf_Addr v)
{ {
*(u32 *)location -= (*(u32 *)v); *(u32 *)location -= (u32)v;
return 0; return 0;
} }
...@@ -347,7 +347,7 @@ int apply_relocate_add(Elf_Shdr *sechdrs, const char *strtab, ...@@ -347,7 +347,7 @@ int apply_relocate_add(Elf_Shdr *sechdrs, const char *strtab,
unsigned int j; unsigned int j;
for (j = 0; j < sechdrs[relsec].sh_size / sizeof(*rel); j++) { for (j = 0; j < sechdrs[relsec].sh_size / sizeof(*rel); j++) {
u64 hi20_loc = unsigned long hi20_loc =
sechdrs[sechdrs[relsec].sh_info].sh_addr sechdrs[sechdrs[relsec].sh_info].sh_addr
+ rel[j].r_offset; + rel[j].r_offset;
u32 hi20_type = ELF_RISCV_R_TYPE(rel[j].r_info); u32 hi20_type = ELF_RISCV_R_TYPE(rel[j].r_info);
...@@ -360,12 +360,12 @@ int apply_relocate_add(Elf_Shdr *sechdrs, const char *strtab, ...@@ -360,12 +360,12 @@ int apply_relocate_add(Elf_Shdr *sechdrs, const char *strtab,
Elf_Sym *hi20_sym = Elf_Sym *hi20_sym =
(Elf_Sym *)sechdrs[symindex].sh_addr (Elf_Sym *)sechdrs[symindex].sh_addr
+ ELF_RISCV_R_SYM(rel[j].r_info); + ELF_RISCV_R_SYM(rel[j].r_info);
u64 hi20_sym_val = unsigned long hi20_sym_val =
hi20_sym->st_value hi20_sym->st_value
+ rel[j].r_addend; + rel[j].r_addend;
/* Calculate lo12 */ /* Calculate lo12 */
u64 offset = hi20_sym_val - hi20_loc; size_t offset = hi20_sym_val - hi20_loc;
if (IS_ENABLED(CONFIG_MODULE_SECTIONS) if (IS_ENABLED(CONFIG_MODULE_SECTIONS)
&& hi20_type == R_RISCV_GOT_HI20) { && hi20_type == R_RISCV_GOT_HI20) {
offset = module_emit_got_entry( offset = module_emit_got_entry(
......
...@@ -50,7 +50,7 @@ static int riscv_gpr_set(struct task_struct *target, ...@@ -50,7 +50,7 @@ static int riscv_gpr_set(struct task_struct *target,
struct pt_regs *regs; struct pt_regs *regs;
regs = task_pt_regs(target); regs = task_pt_regs(target);
ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf, &regs, 0, -1); ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf, regs, 0, -1);
return ret; return ret;
} }
......
...@@ -220,8 +220,3 @@ void __init setup_arch(char **cmdline_p) ...@@ -220,8 +220,3 @@ void __init setup_arch(char **cmdline_p)
riscv_fill_hwcap(); riscv_fill_hwcap();
} }
static int __init riscv_device_init(void)
{
return of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
}
subsys_initcall_sync(riscv_device_init);
...@@ -28,7 +28,9 @@ static void __init zone_sizes_init(void) ...@@ -28,7 +28,9 @@ static void __init zone_sizes_init(void)
{ {
unsigned long max_zone_pfns[MAX_NR_ZONES] = { 0, }; unsigned long max_zone_pfns[MAX_NR_ZONES] = { 0, };
#ifdef CONFIG_ZONE_DMA32
max_zone_pfns[ZONE_DMA32] = PFN_DOWN(min(4UL * SZ_1G, max_low_pfn)); max_zone_pfns[ZONE_DMA32] = PFN_DOWN(min(4UL * SZ_1G, max_low_pfn));
#endif
max_zone_pfns[ZONE_NORMAL] = max_low_pfn; max_zone_pfns[ZONE_NORMAL] = max_low_pfn;
free_area_init_nodes(max_zone_pfns); free_area_init_nodes(max_zone_pfns);
......
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