These files are derived from arch/mips/cpu/mips32/*. Howerver some Changes are made: *.S: changes ABI o32 to n64 config.mk: add mips64 building cflags cpu.c: add cache size probe interrupts.c: implement enable_interrupts and disable_interrupts

Signed-off-by: Zhizhou Zhang etou.zh@gmail.com --- arch/mips/cpu/mips64/Makefile | 47 +++++++ arch/mips/cpu/mips64/config.mk | 39 ++++++ arch/mips/cpu/mips64/cpu.c | 124 ++++++++++++++++++ arch/mips/cpu/mips64/interrupts.c | 39 ++++++ arch/mips/cpu/mips64/start.S | 256 +++++++++++++++++++++++++++++++++++++ arch/mips/cpu/mips64/time.c | 86 +++++++++++++ 6 files changed, 591 insertions(+) create mode 100644 arch/mips/cpu/mips64/Makefile create mode 100644 arch/mips/cpu/mips64/config.mk create mode 100644 arch/mips/cpu/mips64/cpu.c create mode 100644 arch/mips/cpu/mips64/interrupts.c create mode 100644 arch/mips/cpu/mips64/start.S create mode 100644 arch/mips/cpu/mips64/time.c

diff --git a/arch/mips/cpu/mips64/Makefile b/arch/mips/cpu/mips64/Makefile new file mode 100644 index 0000000..335fe88 --- /dev/null +++ b/arch/mips/cpu/mips64/Makefile @@ -0,0 +1,47 @@ +# +# (C) Copyright 2003-2006 +# Wolfgang Denk, DENX Software Engineering, wd@denx.de. +# +# See file CREDITS for list of people who contributed to this +# project. +# +# This program is free software; you can redistribute it and/or +# modify it under the terms of the GNU General Public License as +# published by the Free Software Foundation; either version 2 of +# the License, or (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program; if not, write to the Free Software +# Foundation, Inc., 59 Temple Place, Suite 330, Boston, +# MA 02111-1307 USA +# + +include $(TOPDIR)/config.mk + +LIB = $(obj)lib$(CPU).o + +START = start.o +COBJS-y = cpu.o interrupts.o time.o + +SRCS := $(START:.o=.S) $(SOBJS-y:.o=.S) $(COBJS-y:.o=.c) +OBJS := $(addprefix $(obj),$(SOBJS-y) $(COBJS-y)) +START := $(addprefix $(obj),$(START)) + +all: $(obj).depend $(START) $(LIB) + +$(LIB): $(OBJS) + $(call cmd_link_o_target, $(OBJS)) + +######################################################################### + +# defines $(obj).depend target +include $(SRCTREE)/rules.mk + +sinclude $(obj).depend + +######################################################################### diff --git a/arch/mips/cpu/mips64/config.mk b/arch/mips/cpu/mips64/config.mk new file mode 100644 index 0000000..26f79e6 --- /dev/null +++ b/arch/mips/cpu/mips64/config.mk @@ -0,0 +1,39 @@ +# +# (C) Copyright 2003 +# Wolfgang Denk, DENX Software Engineering, wd@denx.de +# +# See file CREDITS for list of people who contributed to this +# project. +# +# This program is free software; you can redistribute it and/or +# modify it under the terms of the GNU General Public License as +# published by the Free Software Foundation; either version 2 of +# the License, or (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program; if not, write to the Free Software +# Foundation, Inc., 59 Temple Place, Suite 330, Boston, +# MA 02111-1307 USA +# + +# +# Default optimization level for MIPS64 +# +# Note: Toolchains with binutils prior to v2.16 +# are no longer supported by U-Boot MIPS tree! +# +MIPSFLAGS = -march=mips64 + +ENDIANNESS = -EL + +MIPSFLAGS += $(ENDIANNESS) + +PLATFORM_CPPFLAGS += $(MIPSFLAGS) +PLATFORM_CPPFLAGS += -mabi=64 -DCONFIG_64BIT +PLATFORM_LDFLAGS += -m elf64ltsmip + diff --git a/arch/mips/cpu/mips64/cpu.c b/arch/mips/cpu/mips64/cpu.c new file mode 100644 index 0000000..348ccfe --- /dev/null +++ b/arch/mips/cpu/mips64/cpu.c @@ -0,0 +1,124 @@ +/* + * (C) Copyright 2003 + * Wolfgang Denk, DENX Software Engineering, wd@denx.de + * Zhi-zhou Zhang etou.zh@gmail.com + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#include <common.h> +#include <command.h> +#include <netdev.h> +#include <asm/mipsregs.h> +#include <asm/cacheops.h> +#include <asm/reboot.h> +#include <linux/compiler.h> + +void __weak _machine_restart(void) +{ +} + +int do_reset(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) +{ + _machine_restart(); + + fprintf(stderr, "*** reset failed ***\n"); + return 0; +} + +static struct cache_desc icache, dcache; + +void cache_probe(void) +{ + int config, lsize; + + config = read_c0_config1(); + lsize = (config >> 19) & 7; + if (lsize) { /* icache present */ + icache.linesz = 2 << lsize; + icache.sets = 32 << (((config >> 22) + 1) & 7); + icache.ways = 1 + ((config >> 16) & 7); + icache.size = icache.sets * + icache.ways * + icache.linesz; + } + + lsize = (config >> 10) & 7; + if (lsize) { /* dcache present */ + dcache.linesz = 2 << lsize; + dcache.sets = 32 << (((config >> 13) + 1) & 7); + dcache.ways = 1 + ((config >> 7) & 7); + dcache.size = dcache.sets * + dcache.ways * + dcache.linesz; + } +} + +void flush_cache(ulong start_addr, ulong size) +{ + unsigned long addr, aend; + + /* aend will be miscalculated when size is zero, so we return here */ + if (size == 0) + return; + + addr = start_addr & ~(icache.linesz - 1); + aend = (start_addr + size - 1) & ~(icache.linesz - 1); + while (1) { + cache_op(Hit_Invalidate_I, addr); + if (addr == aend) + break; + addr += icache.linesz; + } + + addr = start_addr & ~(dcache.linesz - 1); + aend = (start_addr + size - 1) & ~(dcache.linesz - 1); + while (1) { + cache_op(Hit_Writeback_Inv_D, addr); + if (addr == aend) + break; + addr += dcache.linesz; + } +} + +void flush_dcache_range(ulong start_addr, ulong stop) +{ + unsigned long addr = start_addr & ~(dcache.linesz - 1); + unsigned long aend = (stop - 1) & ~(dcache.linesz - 1); + + while (1) { + cache_op(Hit_Writeback_Inv_D, addr); + if (addr == aend) + break; + addr += dcache.linesz; + } +} + +void invalidate_dcache_range(ulong start_addr, ulong stop) +{ + unsigned long addr = start_addr & ~(dcache.linesz - 1); + unsigned long aend = (stop - 1) & ~(dcache.linesz - 1); + + while (1) { + cache_op(Hit_Invalidate_D, addr); + if (addr == aend) + break; + addr += dcache.linesz; + } +} diff --git a/arch/mips/cpu/mips64/interrupts.c b/arch/mips/cpu/mips64/interrupts.c new file mode 100644 index 0000000..f661fb0 --- /dev/null +++ b/arch/mips/cpu/mips64/interrupts.c @@ -0,0 +1,39 @@ +/* + * (C) Copyright 2003 + * Wolfgang Denk, DENX Software Engineering, wd@denx.de + * Zhi-zhou Zhang etou.zh@gmail.com + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#include <common.h> +#include <asm/mipsregs.h> + +void enable_interrupts(void) +{ + int status = read_c0_status(); + write_c0_status(status | ST0_IE); +} + +int disable_interrupts(void) +{ + int status = read_c0_status(); + write_c0_status(status & ~ST0_IE); + return status | ST0_IE; +} diff --git a/arch/mips/cpu/mips64/start.S b/arch/mips/cpu/mips64/start.S new file mode 100644 index 0000000..b8585e7 --- /dev/null +++ b/arch/mips/cpu/mips64/start.S @@ -0,0 +1,256 @@ +/* + * Startup Code for MIPS64 CPU-core + * + * Copyright (c) 2003 Wolfgang Denk wd@denx.de + * Copyright (c) 2012 Zhi-zhou Zhang etou.zh@gmail.com + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any dlater version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICUdlaR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Pdlace, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#include <asm-offsets.h> +#include <config.h> +#include <asm/regdef.h> +#include <asm/mipsregs.h> + +#ifndef CONFIG_SYS_MIPS_CACHE_MODE +#define CONFIG_SYS_MIPS_CACHE_MODE CONF_CM_CACHABLE_NONCOHERENT +#endif + + /* + * For the moment disable interrupts, mark the kernel mode and + * set ST0_KX so that the CPU does not spit fire when using + * 64-bit addresses. + */ + .macro setup_c0_status set clr + .set push + mfc0 t0, CP0_STATUS + or t0, ST0_CU0 | \set | 0x1f | \clr + xor t0, 0x1f | \clr + mtc0 t0, CP0_STATUS + .set noreorder + sll zero, 3 # ehb + .set pop + .endm + + .set noreorder + + .globl _start + .text +_start: + .org 0x000 + b reset + nop + .org 0x080 + b romReserved + nop + .org 0x100 + b romReserved + nop + .org 0x180 + b romReserved + nop + .org 0x200 + b romReserved + nop + .org 0x280 + b romReserved + nop + .org 0x300 + b romReserved + nop + .org 0x380 + b romReserved + nop + .org 0x480 + b romReserved + nop + + /* + * We hope there are no more reserved vectors! + * 128 * 8 == 1024 == 0x400 + * so this is address R_VEC+0x400 == 0xbfc00400 + */ + .org 0x500 + .align 4 +reset: + + /* Clear watch registers */ + dmtc0 zero, CP0_WATCHLO + dmtc0 zero, CP0_WATCHHI + + /* WP(Watch Pending), SW0/1 should be cleared */ + mtc0 zero, CP0_CAUSE + + setup_c0_status ST0_KX 0 + + /* Init Timer */ + mtc0 zero, CP0_COUNT + mtc0 zero, CP0_COMPARE + +#ifndef CONFIG_SKIP_LOWLEVEL_INIT + /* CONFIG0 register */ + li t0, CONF_CM_UNCACHED + mtc0 t0, CP0_CONFIG +#endif + + /* Initialize $gp */ + bal 1f + nop + .dword _gp +1: + ld gp, 0(ra) + + dla t9, cache_probe + jalr t9 + nop + +#ifndef CONFIG_SKIP_LOWLEVEL_INIT + /* Initialize any external memory */ + dla t9, lowlevel_init + jalr t9 + nop + + /* ... and enable them */ + li t0, CONFIG_SYS_MIPS_CACHE_MODE + mtc0 t0, CP0_CONFIG +#endif + + /* Set up temporary stack */ + li t0, CONFIG_SYS_SDRAM_BASE + CONFIG_SYS_INIT_SP_OFFSET + dla sp, 0(t0) + + dla t9, board_init_f + jr t9 + nop + +/* + * void relocate_code (addr_sp, gd, addr_moni) + * + * This "function" does not return, instead it continues in RAM + * after relocating the monitor code. + * + * a0 = addr_sp + * a1 = gd + * a2 = destination address + */ + .globl relocate_code + .ent relocate_code +relocate_code: + move sp, a0 # set new stack pointer + + li t0, CONFIG_SYS_MONITOR_BASE + dla t3, in_ram + ld t2, -24(t3) # t2 <-- uboot_end_data + move t1, a2 + move s2, a2 # s2 <-- destination address + + /* + * Fix $gp: + * + * New $gp = (Old $gp - CONFIG_SYS_MONITOR_BASE) + Destination Address + */ + move t8, gp + dsub gp, CONFIG_SYS_MONITOR_BASE + dadd gp, a2 # gp now adjusted + dsub s1, gp, t8 # s1 <-- relocation offset + + /* + * t0 = source address + * t1 = target address + * t2 = source end address + */ + + /* + * Save destination address and size for dlater usage in flush_cache() + */ + move s0, a1 # save gd in s0 + move a0, t1 # a0 <-- destination addr + dsub a1, t2, t0 # a1 <-- size + +1: + lw t3, 0(t0) + sw t3, 0(t1) + daddu t0, 4 + ble t0, t2, 1b + daddu t1, 4 + + /* If caches were enabled, we would have to flush them here. */ + + /* a0 & a1 are already set up for flush_cache(start, size) */ + dla t9, flush_cache + jalr t9 + nop + + /* Jump to where we've relocated ourselves */ + daddi t0, s2, in_ram - _start + jr t0 + nop + + .dword _gp + .dword _GLOBAL_OFFSET_TABLE_ + .dword uboot_end_data + .dword uboot_end + .dword num_got_entries + +in_ram: + /* + * Now we want to update GOT. + * + * GOT[0] is reserved. GOT[1] is also reserved for the dynamic object + * generated by GNU ld. Skip these reserved entries from relocation. + */ + ld t3, -8(t0) # t3 <-- num_got_entries + ld t8, -32(t0) # t8 <-- _GLOBAL_OFFSET_TABLE_ + ld t9, -40(t0) # t9 <-- _gp + dsub t8, t9 # compute offset + dadd t8, t8, gp # t8 now holds relocated _G_O_T_ + daddi t8, t8, 16 # skipping first two entries + li t2, 2 +1: + ld t1, 0(t8) + beqz t1, 2f + dadd t1, s1 + sd t1, 0(t8) +2: + daddi t2, 1 + blt t2, t3, 1b + daddi t8, 8 + + /* Clear BSS */ + ld t1, -24(t0) # t1 <-- uboot_end_data + ld t2, -16(t0) # t2 <-- uboot_end + dadd t1, s1 # adjust pointers + dadd t2, s1 + + dsub t1, 8 +1: + daddi t1, 8 + bltl t1, t2, 1b + sd zero, 0(t1) + + move a0, s0 # a0 <-- gd + dla t9, board_init_r + jr t9 + move a1, s2 + + .end relocate_code + + /* Exception handlers */ +romReserved: + b romReserved diff --git a/arch/mips/cpu/mips64/time.c b/arch/mips/cpu/mips64/time.c new file mode 100644 index 0000000..350896a --- /dev/null +++ b/arch/mips/cpu/mips64/time.c @@ -0,0 +1,86 @@ +/* + * (C) Copyright 2003 + * Wolfgang Denk, DENX Software Engineering, wd@denx.de. + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#include <common.h> +#include <asm/mipsregs.h> + +static unsigned long timestamp; + +/* how many counter cycles in a jiffy */ +#define CYCLES_PER_JIFFY (CONFIG_SYS_MIPS_TIMER_FREQ + CONFIG_SYS_HZ / 2) / CONFIG_SYS_HZ + +/* + * timer without interrupts + */ + +int timer_init(void) +{ + /* Set up the timer for the first expiration. */ + timestamp = 0; + write_c0_compare(read_c0_count() + CYCLES_PER_JIFFY); + + return 0; +} + +ulong get_timer(ulong base) +{ + unsigned int count; + unsigned int expirelo = read_c0_compare(); + + /* Check to see if we have missed any timestamps. */ + count = read_c0_count(); + while ((count - expirelo) < 0x7fffffff) { + expirelo += CYCLES_PER_JIFFY; + timestamp++; + } + write_c0_compare(expirelo); + + return (timestamp - base); +} + +void __udelay(unsigned long usec) +{ + unsigned int tmo; + + tmo = read_c0_count() + (usec * (CONFIG_SYS_MIPS_TIMER_FREQ / 1000000)); + while ((tmo - read_c0_count()) < 0x7fffffff) + /*NOP*/; +} + +/* + * This function is derived from PowerPC code (read timebase as long long). + * On MIPS it just returns the timer value. + */ +unsigned long long get_ticks(void) +{ + return get_timer(0); +} + +/* + * This function is derived from PowerPC code (timebase clock frequency). + * On MIPS it returns the number of timer ticks per second. + */ +ulong get_tbclk(void) +{ + return CONFIG_SYS_HZ; +}

These files are derived from arch/mips/cpu/mips32/*. Howerver some Changes are made: *.S: changes ABI o32 to n64 config.mk: add mips64 building cflags cpu.c: add cache size probe interrupts.c: implement enable_interrupts and disable_interrupts

Signed-off-by: Zhizhou Zhang etou.zh@gmail.com --- arch/mips/cpu/mips64/Makefile | 47 +++++++ arch/mips/cpu/mips64/config.mk | 39 ++++++ arch/mips/cpu/mips64/cpu.c | 124 ++++++++++++++++++ arch/mips/cpu/mips64/interrupts.c | 39 ++++++ arch/mips/cpu/mips64/start.S | 256 +++++++++++++++++++++++++++++++++++++ arch/mips/cpu/mips64/time.c | 86 +++++++++++++ 6 files changed, 591 insertions(+) create mode 100644 arch/mips/cpu/mips64/Makefile create mode 100644 arch/mips/cpu/mips64/config.mk create mode 100644 arch/mips/cpu/mips64/cpu.c create mode 100644 arch/mips/cpu/mips64/interrupts.c create mode 100644 arch/mips/cpu/mips64/start.S create mode 100644 arch/mips/cpu/mips64/time.c

diff --git a/arch/mips/cpu/mips64/Makefile b/arch/mips/cpu/mips64/Makefile new file mode 100644 index 0000000..335fe88 --- /dev/null +++ b/arch/mips/cpu/mips64/Makefile @@ -0,0 +1,47 @@ +# +# (C) Copyright 2003-2006 +# Wolfgang Denk, DENX Software Engineering, wd@denx.de. +# +# See file CREDITS for list of people who contributed to this +# project. +# +# This program is free software; you can redistribute it and/or +# modify it under the terms of the GNU General Public License as +# published by the Free Software Foundation; either version 2 of +# the License, or (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program; if not, write to the Free Software +# Foundation, Inc., 59 Temple Place, Suite 330, Boston, +# MA 02111-1307 USA +# + +include $(TOPDIR)/config.mk + +LIB = $(obj)lib$(CPU).o + +START = start.o +COBJS-y = cpu.o interrupts.o time.o + +SRCS := $(START:.o=.S) $(SOBJS-y:.o=.S) $(COBJS-y:.o=.c) +OBJS := $(addprefix $(obj),$(SOBJS-y) $(COBJS-y)) +START := $(addprefix $(obj),$(START)) + +all: $(obj).depend $(START) $(LIB) + +$(LIB): $(OBJS) + $(call cmd_link_o_target, $(OBJS)) + +######################################################################### + +# defines $(obj).depend target +include $(SRCTREE)/rules.mk + +sinclude $(obj).depend + +######################################################################### diff --git a/arch/mips/cpu/mips64/config.mk b/arch/mips/cpu/mips64/config.mk new file mode 100644 index 0000000..26f79e6 --- /dev/null +++ b/arch/mips/cpu/mips64/config.mk @@ -0,0 +1,39 @@ +# +# (C) Copyright 2003 +# Wolfgang Denk, DENX Software Engineering, wd@denx.de +# +# See file CREDITS for list of people who contributed to this +# project. +# +# This program is free software; you can redistribute it and/or +# modify it under the terms of the GNU General Public License as +# published by the Free Software Foundation; either version 2 of +# the License, or (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program; if not, write to the Free Software +# Foundation, Inc., 59 Temple Place, Suite 330, Boston, +# MA 02111-1307 USA +# + +# +# Default optimization level for MIPS64 +# +# Note: Toolchains with binutils prior to v2.16 +# are no longer supported by U-Boot MIPS tree! +# +MIPSFLAGS = -march=mips64 + +ENDIANNESS = -EL + +MIPSFLAGS += $(ENDIANNESS) + +PLATFORM_CPPFLAGS += $(MIPSFLAGS) +PLATFORM_CPPFLAGS += -mabi=64 -DCONFIG_64BIT +PLATFORM_LDFLAGS += -m elf64ltsmip + diff --git a/arch/mips/cpu/mips64/cpu.c b/arch/mips/cpu/mips64/cpu.c new file mode 100644 index 0000000..348ccfe --- /dev/null +++ b/arch/mips/cpu/mips64/cpu.c @@ -0,0 +1,124 @@ +/* + * (C) Copyright 2003 + * Wolfgang Denk, DENX Software Engineering, wd@denx.de + * Zhi-zhou Zhang etou.zh@gmail.com + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#include <common.h> +#include <command.h> +#include <netdev.h> +#include <asm/mipsregs.h> +#include <asm/cacheops.h> +#include <asm/reboot.h> +#include <linux/compiler.h> + +void __weak _machine_restart(void) +{ +} + +int do_reset(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) +{ + _machine_restart(); + + fprintf(stderr, "*** reset failed ***\n"); + return 0; +} + +static struct cache_desc icache, dcache; + +void cache_probe(void) +{ + int config, lsize; + + config = read_c0_config1(); + lsize = (config >> 19) & 7; + if (lsize) { /* icache present */ + icache.linesz = 2 << lsize; + icache.sets = 32 << (((config >> 22) + 1) & 7); + icache.ways = 1 + ((config >> 16) & 7); + icache.size = icache.sets * + icache.ways * + icache.linesz; + } + + lsize = (config >> 10) & 7; + if (lsize) { /* dcache present */ + dcache.linesz = 2 << lsize; + dcache.sets = 32 << (((config >> 13) + 1) & 7); + dcache.ways = 1 + ((config >> 7) & 7); + dcache.size = dcache.sets * + dcache.ways * + dcache.linesz; + } +} + +void flush_cache(ulong start_addr, ulong size) +{ + unsigned long addr, aend; + + /* aend will be miscalculated when size is zero, so we return here */ + if (size == 0) + return; + + addr = start_addr & ~(icache.linesz - 1); + aend = (start_addr + size - 1) & ~(icache.linesz - 1); + while (1) { + cache_op(Hit_Invalidate_I, addr); + if (addr == aend) + break; + addr += icache.linesz; + } + + addr = start_addr & ~(dcache.linesz - 1); + aend = (start_addr + size - 1) & ~(dcache.linesz - 1); + while (1) { + cache_op(Hit_Writeback_Inv_D, addr); + if (addr == aend) + break; + addr += dcache.linesz; + } +} + +void flush_dcache_range(ulong start_addr, ulong stop) +{ + unsigned long addr = start_addr & ~(dcache.linesz - 1); + unsigned long aend = (stop - 1) & ~(dcache.linesz - 1); + + while (1) { + cache_op(Hit_Writeback_Inv_D, addr); + if (addr == aend) + break; + addr += dcache.linesz; + } +} + +void invalidate_dcache_range(ulong start_addr, ulong stop) +{ + unsigned long addr = start_addr & ~(dcache.linesz - 1); + unsigned long aend = (stop - 1) & ~(dcache.linesz - 1); + + while (1) { + cache_op(Hit_Invalidate_D, addr); + if (addr == aend) + break; + addr += dcache.linesz; + } +} diff --git a/arch/mips/cpu/mips64/interrupts.c b/arch/mips/cpu/mips64/interrupts.c new file mode 100644 index 0000000..f661fb0 --- /dev/null +++ b/arch/mips/cpu/mips64/interrupts.c @@ -0,0 +1,39 @@ +/* + * (C) Copyright 2003 + * Wolfgang Denk, DENX Software Engineering, wd@denx.de + * Zhi-zhou Zhang etou.zh@gmail.com + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#include <common.h> +#include <asm/mipsregs.h> + +void enable_interrupts(void) +{ + int status = read_c0_status(); + write_c0_status(status | ST0_IE); +} + +int disable_interrupts(void) +{ + int status = read_c0_status(); + write_c0_status(status & ~ST0_IE); + return status | ST0_IE; +} diff --git a/arch/mips/cpu/mips64/start.S b/arch/mips/cpu/mips64/start.S new file mode 100644 index 0000000..b8585e7 --- /dev/null +++ b/arch/mips/cpu/mips64/start.S @@ -0,0 +1,256 @@ +/* + * Startup Code for MIPS64 CPU-core + * + * Copyright (c) 2003 Wolfgang Denk wd@denx.de + * Copyright (c) 2012 Zhi-zhou Zhang etou.zh@gmail.com + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any dlater version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICUdlaR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Pdlace, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#include <asm-offsets.h> +#include <config.h> +#include <asm/regdef.h> +#include <asm/mipsregs.h> + +#ifndef CONFIG_SYS_MIPS_CACHE_MODE +#define CONFIG_SYS_MIPS_CACHE_MODE CONF_CM_CACHABLE_NONCOHERENT +#endif + + /* + * For the moment disable interrupts, mark the kernel mode and + * set ST0_KX so that the CPU does not spit fire when using + * 64-bit addresses. + */ + .macro setup_c0_status set clr + .set push + mfc0 t0, CP0_STATUS + or t0, ST0_CU0 | \set | 0x1f | \clr + xor t0, 0x1f | \clr + mtc0 t0, CP0_STATUS + .set noreorder + sll zero, 3 # ehb + .set pop + .endm + + .set noreorder + + .globl _start + .text +_start: + .org 0x000 + b reset + nop + .org 0x080 + b romReserved + nop + .org 0x100 + b romReserved + nop + .org 0x180 + b romReserved + nop + .org 0x200 + b romReserved + nop + .org 0x280 + b romReserved + nop + .org 0x300 + b romReserved + nop + .org 0x380 + b romReserved + nop + .org 0x480 + b romReserved + nop + + /* + * We hope there are no more reserved vectors! + * 128 * 8 == 1024 == 0x400 + * so this is address R_VEC+0x400 == 0xbfc00400 + */ + .org 0x500 + .align 4 +reset: + + /* Clear watch registers */ + dmtc0 zero, CP0_WATCHLO + dmtc0 zero, CP0_WATCHHI + + /* WP(Watch Pending), SW0/1 should be cleared */ + mtc0 zero, CP0_CAUSE + + setup_c0_status ST0_KX 0 + + /* Init Timer */ + mtc0 zero, CP0_COUNT + mtc0 zero, CP0_COMPARE + +#ifndef CONFIG_SKIP_LOWLEVEL_INIT + /* CONFIG0 register */ + li t0, CONF_CM_UNCACHED + mtc0 t0, CP0_CONFIG +#endif + + /* Initialize $gp */ + bal 1f + nop + .dword _gp +1: + ld gp, 0(ra) + + dla t9, cache_probe + jalr t9 + nop + +#ifndef CONFIG_SKIP_LOWLEVEL_INIT + /* Initialize any external memory */ + dla t9, lowlevel_init + jalr t9 + nop + + /* ... and enable them */ + li t0, CONFIG_SYS_MIPS_CACHE_MODE + mtc0 t0, CP0_CONFIG +#endif + + /* Set up temporary stack */ + li t0, CONFIG_SYS_SDRAM_BASE + CONFIG_SYS_INIT_SP_OFFSET + dla sp, 0(t0) + + dla t9, board_init_f + jr t9 + nop + +/* + * void relocate_code (addr_sp, gd, addr_moni) + * + * This "function" does not return, instead it continues in RAM + * after relocating the monitor code. + * + * a0 = addr_sp + * a1 = gd + * a2 = destination address + */ + .globl relocate_code + .ent relocate_code +relocate_code: + move sp, a0 # set new stack pointer + + li t0, CONFIG_SYS_MONITOR_BASE + dla t3, in_ram + ld t2, -24(t3) # t2 <-- uboot_end_data + move t1, a2 + move s2, a2 # s2 <-- destination address + + /* + * Fix $gp: + * + * New $gp = (Old $gp - CONFIG_SYS_MONITOR_BASE) + Destination Address + */ + move t8, gp + dsub gp, CONFIG_SYS_MONITOR_BASE + dadd gp, a2 # gp now adjusted + dsub s1, gp, t8 # s1 <-- relocation offset + + /* + * t0 = source address + * t1 = target address + * t2 = source end address + */ + + /* + * Save destination address and size for dlater usage in flush_cache() + */ + move s0, a1 # save gd in s0 + move a0, t1 # a0 <-- destination addr + dsub a1, t2, t0 # a1 <-- size + +1: + lw t3, 0(t0) + sw t3, 0(t1) + daddu t0, 4 + ble t0, t2, 1b + daddu t1, 4 + + /* If caches were enabled, we would have to flush them here. */ + + /* a0 & a1 are already set up for flush_cache(start, size) */ + dla t9, flush_cache + jalr t9 + nop + + /* Jump to where we've relocated ourselves */ + daddi t0, s2, in_ram - _start + jr t0 + nop + + .dword _gp + .dword _GLOBAL_OFFSET_TABLE_ + .dword uboot_end_data + .dword uboot_end + .dword num_got_entries + +in_ram: + /* + * Now we want to update GOT. + * + * GOT[0] is reserved. GOT[1] is also reserved for the dynamic object + * generated by GNU ld. Skip these reserved entries from relocation. + */ + ld t3, -8(t0) # t3 <-- num_got_entries + ld t8, -32(t0) # t8 <-- _GLOBAL_OFFSET_TABLE_ + ld t9, -40(t0) # t9 <-- _gp + dsub t8, t9 # compute offset + dadd t8, t8, gp # t8 now holds relocated _G_O_T_ + daddi t8, t8, 16 # skipping first two entries + li t2, 2 +1: + ld t1, 0(t8) + beqz t1, 2f + dadd t1, s1 + sd t1, 0(t8) +2: + daddi t2, 1 + blt t2, t3, 1b + daddi t8, 8 + + /* Clear BSS */ + ld t1, -24(t0) # t1 <-- uboot_end_data + ld t2, -16(t0) # t2 <-- uboot_end + dadd t1, s1 # adjust pointers + dadd t2, s1 + + dsub t1, 8 +1: + daddi t1, 8 + bltl t1, t2, 1b + sd zero, 0(t1) + + move a0, s0 # a0 <-- gd + dla t9, board_init_r + jr t9 + move a1, s2 + + .end relocate_code + + /* Exception handlers */ +romReserved: + b romReserved diff --git a/arch/mips/cpu/mips64/time.c b/arch/mips/cpu/mips64/time.c new file mode 100644 index 0000000..350896a --- /dev/null +++ b/arch/mips/cpu/mips64/time.c @@ -0,0 +1,86 @@ +/* + * (C) Copyright 2003 + * Wolfgang Denk, DENX Software Engineering, wd@denx.de. + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#include <common.h> +#include <asm/mipsregs.h> + +static unsigned long timestamp; + +/* how many counter cycles in a jiffy */ +#define CYCLES_PER_JIFFY (CONFIG_SYS_MIPS_TIMER_FREQ + CONFIG_SYS_HZ / 2) / CONFIG_SYS_HZ + +/* + * timer without interrupts + */ + +int timer_init(void) +{ + /* Set up the timer for the first expiration. */ + timestamp = 0; + write_c0_compare(read_c0_count() + CYCLES_PER_JIFFY); + + return 0; +} + +ulong get_timer(ulong base) +{ + unsigned int count; + unsigned int expirelo = read_c0_compare(); + + /* Check to see if we have missed any timestamps. */ + count = read_c0_count(); + while ((count - expirelo) < 0x7fffffff) { + expirelo += CYCLES_PER_JIFFY; + timestamp++; + } + write_c0_compare(expirelo); + + return (timestamp - base); +} + +void __udelay(unsigned long usec) +{ + unsigned int tmo; + + tmo = read_c0_count() + (usec * (CONFIG_SYS_MIPS_TIMER_FREQ / 1000000)); + while ((tmo - read_c0_count()) < 0x7fffffff) + /*NOP*/; +} + +/* + * This function is derived from PowerPC code (read timebase as long long). + * On MIPS it just returns the timer value. + */ +unsigned long long get_ticks(void) +{ + return get_timer(0); +} + +/* + * This function is derived from PowerPC code (timebase clock frequency). + * On MIPS it returns the number of timer ticks per second. + */ +ulong get_tbclk(void) +{ + return CONFIG_SYS_HZ; +}

This patch add qemu-mips64 config. And here uses qemu-mips board rather then a new board qemu-mips64 for the sake of reduce code copying. Below are the changes: config.mk: We must define CONFIG_SYS_TEXT_BASE in configs/*.h, not here, so remove this file. u-boot.lds: add mips64 link statements. boards.cfg: add mips64 cpu define.

Signed-off-by: Zhizhou Zhang etou.zh@gmail.com --- board/qemu-mips/config.mk | 10 --- board/qemu-mips/u-boot.lds | 8 ++ boards.cfg | 1 + include/configs/qemu-mips.h | 3 + include/configs/qemu-mips64.h | 171 +++++++++++++++++++++++++++++++++++++++++ 5 files changed, 183 insertions(+), 10 deletions(-) delete mode 100644 board/qemu-mips/config.mk create mode 100644 include/configs/qemu-mips64.h

diff --git a/board/qemu-mips/config.mk b/board/qemu-mips/config.mk deleted file mode 100644 index 27cd34a..0000000 --- a/board/qemu-mips/config.mk +++ /dev/null @@ -1,10 +0,0 @@ -# -# Qemu -M mips system emulator -# See http://fabrice.bellard.free.fr/qemu -# - -# ROM version -CONFIG_SYS_TEXT_BASE = 0xbfc00000 - -# RAM version -#CONFIG_SYS_TEXT_BASE = 0x80001000 diff --git a/board/qemu-mips/u-boot.lds b/board/qemu-mips/u-boot.lds index 9460b20..06db68d 100644 --- a/board/qemu-mips/u-boot.lds +++ b/board/qemu-mips/u-boot.lds @@ -24,7 +24,11 @@ /* OUTPUT_FORMAT("elf32-bigmips", "elf32-bigmips", "elf32-bigmips") */ +#if defined(CONFIG_64BIT) +OUTPUT_FORMAT("elf64-tradlittlemips", "elf64-tradlittlemips", "elf64-tradlittlemips") +#else OUTPUT_FORMAT("elf32-tradbigmips", "elf32-tradbigmips", "elf32-tradlittlemips") +#endif OUTPUT_ARCH(mips) ENTRY(_start) SECTIONS @@ -63,7 +67,11 @@ SECTIONS }

uboot_end_data = .; +#if defined(CONFIG_64BIT) + num_got_entries = (__got_end - __got_start) >> 3; +#else num_got_entries = (__got_end - __got_start) >> 2; +#endif

. = ALIGN(4); .sbss : { *(.sbss*) } diff --git a/boards.cfg b/boards.cfg index fdb84ad..a6806b8 100644 --- a/boards.cfg +++ b/boards.cfg @@ -379,6 +379,7 @@ M5485GFE m68k mcf547x_8x m548xevb freescale - M5485HFE m68k mcf547x_8x m548xevb freescale - M5485EVB:SYS_BUSCLK=100000000,SYS_BOOTSZ=2,SYS_DRAMSZ=64,SYS_NOR1SZ=16,SYS_VIDEO microblaze-generic microblaze microblaze microblaze-generic xilinx qemu_mips mips mips32 qemu-mips - - qemu-mips +qemu_mips64 mips mips64 qemu-mips - - qemu-mips64 vct_platinum mips mips32 vct micronas - vct:VCT_PLATINUM vct_platinumavc mips mips32 vct micronas - vct:VCT_PLATINUMAVC vct_platinumavc_onenand mips mips32 vct micronas - vct:VCT_PLATINUMAVC,VCT_ONENAND diff --git a/include/configs/qemu-mips.h b/include/configs/qemu-mips.h index 306c173..bb85bbe 100644 --- a/include/configs/qemu-mips.h +++ b/include/configs/qemu-mips.h @@ -135,6 +135,9 @@ #define CONFIG_SYS_MONITOR_BASE CONFIG_SYS_TEXT_BASE #define CONFIG_SYS_MONITOR_LEN (192 << 10)

+#define CONFIG_SYS_TEXT_BASE 0xbfc00000 /* Rom version */ +//#define CONFIG_SYS_TEXT_BASE 0x80001000 /* RAM Version */ + #define CONFIG_SYS_INIT_SP_OFFSET 0x400000

/* We boot from this flash, selected with dip switch */ diff --git a/include/configs/qemu-mips64.h b/include/configs/qemu-mips64.h new file mode 100644 index 0000000..2f39494 --- /dev/null +++ b/include/configs/qemu-mips64.h @@ -0,0 +1,171 @@ +/* + * (C) Copyright 2003 + * Wolfgang Denk, DENX Software Engineering, wd@denx.de. + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +/* + * This file contains the configuration parameters for qemu-mips64 target. + */ + +#ifndef __CONFIG_H +#define __CONFIG_H + +#define CONFIG_MIPS64 1 /* MIPS64 CPU core */ +#define CONFIG_64BIT 1 +#define CONFIG_QEMU_MIPS 1 +#define CONFIG_MISC_INIT_R + +/*IP address is default used by Qemu*/ +#define CONFIG_IPADDR 10.0.2.15 /* Our IP address */ +#define CONFIG_SERVERIP 10.0.2.2 /* Server IP address */ + +#define CONFIG_BOOTDELAY 10 /* autoboot after 10 seconds */ + +#define CONFIG_BAUDRATE 115200 + +/* valid baudrates */ +#define CONFIG_SYS_BAUDRATE_TABLE { 9600, 19200, 38400, 57600, 115200 } + +#define CONFIG_TIMESTAMP /* Print image info with timestamp */ +#undef CONFIG_BOOTARGS + +#define CONFIG_EXTRA_ENV_SETTINGS \ + "addmisc=setenv bootargs ${bootargs} " \ + "console=ttyS0,${baudrate} " \ + "panic=1\0" \ + "bootfile=/tftpboot/vmlinux\0" \ + "load=tftp ffffffff80500000 ${u-boot}\0" \ + "" + +#define CONFIG_BOOTCOMMAND "" + +/* + * BOOTP options + */ +#define CONFIG_BOOTP_BOOTFILESIZE +#define CONFIG_BOOTP_BOOTPATH +#define CONFIG_BOOTP_GATEWAY +#define CONFIG_BOOTP_HOSTNAME + +/* + * Command line configuration. + */ +#include <config_cmd_default.h> +#define CONFIG_DP83902A + +#define CONFIG_CMD_FAT +#define CONFIG_CMD_EXT2 +#undef CONFIG_CMD_LOADB +#undef CONFIG_CMD_LOADS +#define CONFIG_CMD_DHCP + +#define CONFIG_DRIVER_NE2000 +#define CONFIG_DRIVER_NE2000_BASE (0xffffffffb4000300) + +#define CONFIG_SYS_NS16550 +#define CONFIG_SYS_NS16550_SERIAL +#define CONFIG_SYS_NS16550_REG_SIZE 1 +#define CONFIG_SYS_NS16550_CLK 115200 +#define CONFIG_SYS_NS16550_COM1 (0xffffffffb40003f8) +#define CONFIG_CONS_INDEX 1 + +#define CONFIG_CMD_IDE +#define CONFIG_DOS_PARTITION + +#define CONFIG_SYS_IDE_MAXBUS 2 +#define CONFIG_SYS_ATA_IDE0_OFFSET (0x1f0) +#define CONFIG_SYS_ATA_IDE1_OFFSET (0x170) +#define CONFIG_SYS_ATA_DATA_OFFSET (0) +#define CONFIG_SYS_ATA_REG_OFFSET (0) +#define CONFIG_SYS_ATA_BASE_ADDR (0xffffffffb4000000) + +#define CONFIG_SYS_IDE_MAXDEVICE (4) + +#define CONFIG_CMD_RARP + +/* + * Miscellaneous configurable options + */ +#define CONFIG_SYS_LONGHELP /* undef to save memory */ + +#define CONFIG_SYS_PROMPT "qemu-mips64 # " /* Monitor Command Prompt */ + +#define CONFIG_AUTO_COMPLETE +#define CONFIG_CMDLINE_EDITING +#define CONFIG_SYS_HUSH_PARSER +#define CONFIG_SYS_PROMPT_HUSH_PS2 "> " + +#define CONFIG_SYS_CBSIZE 256 /* Console I/O Buffer Size */ +#define CONFIG_SYS_PBSIZE (CONFIG_SYS_CBSIZE+sizeof(CONFIG_SYS_PROMPT)+16) /* Print Buffer Size */ +#define CONFIG_SYS_MAXARGS 16 /* max number of command args */ + +#define CONFIG_SYS_MALLOC_LEN 128*1024 + +#define CONFIG_SYS_BOOTPARAMS_LEN 128*1024 + +#define CONFIG_SYS_MHZ 132 + +#define CONFIG_SYS_MIPS_TIMER_FREQ (CONFIG_SYS_MHZ * 1000000) + +#define CONFIG_SYS_HZ 1000 + +#define CONFIG_SYS_SDRAM_BASE 0xffffffff80000000 /* Cached addr */ + +#define CONFIG_SYS_LOAD_ADDR 0xffffffff81000000 /* default load address */ + +#define CONFIG_SYS_MEMTEST_START 0xffffffff80100000 +#define CONFIG_SYS_MEMTEST_END 0xffffffff80800000 + +/*----------------------------------------------------------------------- + * FLASH and environment organization + */ +#define CONFIG_CMD_NO_FLASH +#define CONFIG_SYS_NO_FLASH +#undef CONFIG_CMD_IMLS + +/* The following #defines are needed to get flash environment right */ +#undef CONFIG_SYS_TEXT_BASE +//#define CONFIG_SYS_TEXT_BASE 0xFfffFfffbfc00000 /* ROM Version */ +#define CONFIG_SYS_TEXT_BASE 0xffffffff80200000 /* RAM Version */ +#define CONFIG_SYS_MONITOR_BASE CONFIG_SYS_TEXT_BASE + +#define CONFIG_SYS_INIT_SP_OFFSET 0x400000 +#define CONFIG_ENV_IS_NOWHERE 1 + +/* Address and size of Primary Environment Sector */ +#define CONFIG_ENV_SIZE 0x8000 + +#define CONFIG_ENV_OVERWRITE 1 + +#define MEM_SIZE 128 + +#undef CONFIG_MEMSIZE_IN_BYTES + +#define CONFIG_LZA + +/*----------------------------------------------------------------------- + * Cache Configuration + */ +#define CONFIG_SYS_DCACHE_SIZE 16384 +#define CONFIG_SYS_ICACHE_SIZE 16384 +#define CONFIG_SYS_CACHELINE_SIZE 32 + +#endif /* __CONFIG_H */