Add Makefile, board.c, interrupts.c and bootm.c functions to nds32 architecture.
Signed-off-by: Macpaul Lin macpaul@andestech.com --- Changes for v1-v4: - code clean up and formatting style.
Changes for v5-v6: - board.c - Do some clean up and add code - Remove display banner which hasn't support. - Add ftpmu010 related power management unit code. - Remove useless LED related code. - Move SDRAM init to board sepecific files. (ex. adp-ag101.c) - Remove CONFIG_SOFT_I2C which hasn't been support. - Remove CONFIG_FSL_ESDHC which hasn't been support. - clean up.
Changes for v7: - clean up. - move single file patch arch/nds32/config.mk to this commit. - interrupts.c refine origin interrupt enable and disable.
arch/nds32/config.mk | 35 +++++ arch/nds32/lib/Makefile | 52 +++++++ arch/nds32/lib/board.c | 346 +++++++++++++++++++++++++++++++++++++++++++ arch/nds32/lib/bootm.c | 241 ++++++++++++++++++++++++++++++ arch/nds32/lib/interrupts.c | 131 ++++++++++++++++ 5 files changed, 805 insertions(+), 0 deletions(-) create mode 100644 arch/nds32/config.mk create mode 100644 arch/nds32/lib/Makefile create mode 100644 arch/nds32/lib/board.c create mode 100644 arch/nds32/lib/bootm.c create mode 100644 arch/nds32/lib/interrupts.c
diff --git a/arch/nds32/config.mk b/arch/nds32/config.mk new file mode 100644 index 0000000..ac5d0cf --- /dev/null +++ b/arch/nds32/config.mk @@ -0,0 +1,35 @@ +# +# (C) Copyright 2000-2002 +# Wolfgang Denk, DENX Software Engineering, wd@denx.de. +# +# (C) Copyright 2011 +# Shawn Lin, Andes Technology Corporation nobuhiro@andestech.com +# Macpaul Lin, Andes Technology Corporation macpaul@andestech.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 + +CROSS_COMPILE ?= nds32le-linux- + +STANDALONE_LOAD_ADDR = 0x300000 -T nds32.lds + +PLATFORM_RELFLAGS += -fno-strict-aliasing -fno-common +PLATFORM_RELFLAGS += -gdwarf-2 +PLATFORM_CPPFLAGS += -DCONFIG_NDS32 -D__nds32__ -G0 -ffixed-8 + +LDSCRIPT := $(SRCTREE)/$(CPUDIR)/u-boot.lds diff --git a/arch/nds32/lib/Makefile b/arch/nds32/lib/Makefile new file mode 100644 index 0000000..eca4324 --- /dev/null +++ b/arch/nds32/lib/Makefile @@ -0,0 +1,52 @@ +# +# (C) Copyright 2000-2006 +# Wolfgang Denk, DENX Software Engineering, wd@denx.de. +# +# Copyright (C) 2011 Andes Technology Corporation +# Shawn Lin, Andes Technology Corporation nobuhiro@andestech.com +# Macpaul Lin, Andes Technology Corporation macpaul@andestech.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 $(TOPDIR)/config.mk + +LIB = $(obj)lib$(ARCH).o + +OBJS := board.o bootm.o interrupts.o + +all: $(LIB) + +$(LIB): $(OBJS) $(SOBJS) + $(AR) crv $@ $^ + +clean: + rm -f $(SOBJS) $(OBJS) + +distclean: clean + rm -f $(LIB) core *.bak .depend + +######################################################################### + +# defines $(obj).depend target +include $(SRCTREE)/rules.mk + +sinclude $(obj).depend + +######################################################################### diff --git a/arch/nds32/lib/board.c b/arch/nds32/lib/board.c new file mode 100644 index 0000000..6ed4194 --- /dev/null +++ b/arch/nds32/lib/board.c @@ -0,0 +1,346 @@ +/* + * (C) Copyright 2002-2006 + * Wolfgang Denk, DENX Software Engineering, wd@denx.de. + * + * Copyright (C) 2011 Andes Technology Corporation + * Shawn Lin, Andes Technology Corporation nobuhiro@andestech.com + * Macpaul Lin, Andes Technology Corporation macpaul@andestech.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 <malloc.h> +#include <stdio_dev.h> +#include <timestamp.h> +#include <version.h> +#include <net.h> +#include <serial.h> +#include <nand.h> +#include <onenand_uboot.h> +#include <mmc.h> + +DECLARE_GLOBAL_DATA_PTR; + +extern ulong __bss_end; +ulong monitor_flash_len; + +#ifndef CONFIG_IDENT_STRING +#define CONFIG_IDENT_STRING "" +#endif + +const char version_string[] = + U_BOOT_VERSION" (" U_BOOT_DATE " - " U_BOOT_TIME ")"CONFIG_IDENT_STRING; + +/* + * Init Utilities + */ + +#if !defined(CONFIG_BAUDRATE) +#define CONFIG_BAUDRATE 38400 +#endif +static int init_baudrate(void) +{ + char tmp[64]; /* long enough for environment variables */ + int i = getenv_f("baudrate", tmp, sizeof(tmp)); + + gd->bd->bi_baudrate = gd->baudrate = (i > 0) + ? (int) simple_strtoul(tmp, NULL, 10) + : CONFIG_BAUDRATE; + + return 0; +} + +/* + * WARNING: this code looks "cleaner" than the PowerPC version, but + * has the disadvantage that you either get nothing, or everything. + * On PowerPC, you might see "DRAM: " before the system hangs - which + * gives a simple yet clear indication which part of the + * initialization if failing. + */ +static int display_dram_config(void) +{ + int i; + +#ifdef DEBUG + puts("RAM Configuration:\n"); + + for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) { + printf("Bank #%d: %08lx ", i, gd->bd->bi_dram[i].start); + print_size(gd->bd->bi_dram[i].size, "\n"); + } +#else + ulong size = 0; + + for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) + size += gd->bd->bi_dram[i].size; + + puts("DRAM: "); + print_size(size, "\n"); +#endif + + return 0; +} + +#ifndef CONFIG_SYS_NO_FLASH +static void display_flash_config(ulong size) +{ + puts("Flash: "); + print_size(size, "\n"); +} +#endif /* CONFIG_SYS_NO_FLASH */ + +#if defined(CONFIG_CMD_PCI) || defined(CONFIG_PCI) +#include <pci.h> +static int nds32_pci_init(void) +{ + pci_init(); + return 0; +} +#endif /* CONFIG_CMD_PCI || CONFIG_PCI */ + +#if defined(CONFIG_PMU) || defined(CONFIG_PCU) +static int pmu_init(void) +{ +#if defined(CONFIG_FTPMU010_POWER) +#ifdef __NDS32_N1213_43U1H__ /* AG101: internal definition in toolchain */ + ftpmu010_sdram_clk_disable(CONFIG_SYS_FTPMU010_PDLLCR0_HCLKOUTDIS); + ftpmu010_mfpsr_select_dev(FTPMU010_MFPSR_AC97CLKSEL); + ftpmu010_sdramhtc_set(CONFIG_SYS_FTPMU010_SDRAMHTC); +#endif /* __NDS32_N1213_43U1H__ */ +#endif + return 0; +} +#endif + +/* + * Breathe some life into the board... + * + * Initialize a serial port as console, and carry out some hardware + * tests. + * + * The first part of initialization is running from Flash memory; + * its main purpose is to initialize the RAM so that we + * can relocate the monitor code to RAM. + */ + +/* + * All attempts to come up with a "common" initialization sequence + * that works for all boards and architectures failed: some of the + * requirements are just _too_ different. To get rid of the resulting + * mess of board dependent #ifdef'ed code we now make the whole + * initialization sequence configurable to the user. + * + * The requirements for any new initalization function is simple: it + * receives a pointer to the "global data" structure as it's only + * argument, and returns an integer return code, where 0 means + * "continue" and != 0 means "fatal error, hang the system". + */ +typedef int (init_fnc_t)(void); + +init_fnc_t *init_sequence[] = { +#if defined(CONFIG_ARCH_CPU_INIT) + arch_cpu_init, /* basic arch cpu dependent setup */ +#endif +#if defined(CONFIG_PMU) || defined(CONFIG_PCU) + pmu_init, +#endif + board_init, /* basic board dependent setup */ +#if defined(CONFIG_USE_IRQ) + interrupt_init, /* set up exceptions */ +#endif + timer_init, /* initialize timer */ + env_init, /* initialize environment */ + init_baudrate, /* initialze baudrate settings */ + serial_init, /* serial communications setup */ + console_init_f, /* stage 1 init of console */ +#if defined(CONFIG_DISPLAY_BOARDINFO) + checkboard, /* display board info */ +#endif +#if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C) + init_func_i2c, +#endif + dram_init, /* configure available RAM banks */ +#if defined(CONFIG_CMD_PCI) || defined(CONFIG_PCI) + nds32_pci_init, +#endif + display_dram_config, + NULL, +}; + +void start_andesboot(void) +{ + init_fnc_t **init_fnc_ptr; + char *s; +#if defined(CONFIG_VFD) || defined(CONFIG_LCD) + unsigned long addr; +#endif + + /* Pointer is writable since we allocated a register for it */ + gd = (gd_t *)(_andesboot_start - CONFIG_SYS_MALLOC_LEN - sizeof(gd_t)); + /* compiler optimization barrier needed for GCC >= 3.4 */ + __asm__ __volatile__("" : : : "memory"); + + memset((void *)gd, 0, sizeof(gd_t)); + gd->bd = (bd_t *)((char *)gd - sizeof(bd_t)); + memset(gd->bd, 0, sizeof(bd_t)); + + gd->flags |= GD_FLG_RELOC; + + for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) { + if ((*init_fnc_ptr)() != 0) + hang(); + } + + /* andesboot_start is defined in the board-specific linker script */ + mem_malloc_init(_andesboot_start - CONFIG_SYS_MALLOC_LEN, + CONFIG_SYS_MALLOC_LEN); + +#ifndef CONFIG_SYS_NO_FLASH + /* configure available FLASH banks */ + gd->bd->bi_flashstart = CONFIG_SYS_FLASH_BASE; + gd->bd->bi_flashsize = flash_init(); + gd->bd->bi_flashoffset = CONFIG_SYS_FLASH_BASE + gd->bd->bi_flashsize; + + if (gd->bd->bi_flashsize) + display_flash_config(gd->bd->bi_flashsize); +#endif /* CONFIG_SYS_NO_FLASH */ + +#ifdef CONFIG_VFD +# ifndef PAGE_SIZE +# define PAGE_SIZE 4096 +# endif + /* + * reserve memory for VFD display (always full pages) + */ + /* bss_end is defined in the board-specific linker script */ + addr = (__bss_end + (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1); + vfd_setmem(addr); + gd->fb_base = addr; +#endif /* CONFIG_VFD */ + +#ifdef CONFIG_LCD + /* board init may have inited fb_base */ + if (!gd->fb_base) { +# ifndef PAGE_SIZE +# define PAGE_SIZE 4096 +# endif + /* + * reserve memory for LCD display (always full pages) + */ + /* bss_end is defined in the board-specific linker script */ + addr = (__bss_end + (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1); + lcd_setmem(addr); + gd->fb_base = addr; + } +#endif /* CONFIG_LCD */ + +#if defined(CONFIG_CMD_NAND) + puts("NAND: "); + nand_init(); /* go init the NAND */ +#endif + +#if defined(CONFIG_CMD_ONENAND) + onenand_init(); +#endif + + /* initialize environment */ + env_relocate(); + +#ifdef CONFIG_VFD + /* must do this after the framebuffer is allocated */ + drv_vfd_init(); +#endif /* CONFIG_VFD */ + +#ifdef CONFIG_SERIAL_MULTI + serial_initialize(); +#endif + + /* IP Address */ + gd->bd->bi_ip_addr = getenv_IPaddr("ipaddr"); + + stdio_init(); /* get the devices list going. */ + + jumptable_init(); + +#if defined(CONFIG_API) + /* Initialize API */ + api_init(); +#endif + + console_init_r(); /* fully init console as a device */ + +#if defined(CONFIG_ARCH_MISC_INIT) + /* miscellaneous arch dependent initialisations */ + arch_misc_init(); +#endif +#if defined(CONFIG_MISC_INIT_R) + /* miscellaneous platform dependent initialisations */ + misc_init_r(); +#endif + + /* enable exceptions */ + enable_interrupts(); + + /* Perform network card initialisation if necessary */ + + /* Initialize from environment */ + s = getenv("loadaddr"); + if (s != NULL) + load_addr = simple_strtoul(s, NULL, 16); + +#if defined(CONFIG_CMD_NET) + s = getenv("bootfile"); + if (s != NULL) + copy_filename(BootFile, s, sizeof(BootFile)); +#endif + +#ifdef BOARD_LATE_INIT + board_late_init(); +#endif + +#ifdef CONFIG_GENERIC_MMC + puts("MMC: "); + mmc_initialize(gd->bd); +#endif + +#if defined(CONFIG_CMD_NET) +#if defined(CONFIG_NET_MULTI) + puts("Net: "); +#endif + eth_initialize(gd->bd); +#if defined(CONFIG_RESET_PHY_R) + debug("Reset Ethernet PHY\n"); + reset_phy(); +#endif +#endif + /* main_loop() can return to retry autoboot, if so just run it again. */ + for (;;) + main_loop(); + + /* NOTREACHED - no way out of command loop except booting */ +} + +void hang(void) +{ + puts("### ERROR ### Please RESET the board ###\n"); + for (;;) + ; +} diff --git a/arch/nds32/lib/bootm.c b/arch/nds32/lib/bootm.c new file mode 100644 index 0000000..b0a5a0d --- /dev/null +++ b/arch/nds32/lib/bootm.c @@ -0,0 +1,241 @@ +/* + * Copyright (C) 2011 Andes Technology Corporation + * Shawn Lin, Andes Technology Corporation nobuhiro@andestech.com + * Macpaul Lin, Andes Technology Corporation macpaul@andestech.com + * + * 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 <image.h> +#include <u-boot/zlib.h> +#include <asm/byteorder.h> + +DECLARE_GLOBAL_DATA_PTR; + +#if defined(CONFIG_SETUP_MEMORY_TAGS) || \ + defined(CONFIG_CMDLINE_TAG) || \ + defined(CONFIG_INITRD_TAG) || \ + defined(CONFIG_SERIAL_TAG) || \ + defined(CONFIG_REVISION_TAG) +static void setup_start_tag(bd_t *bd); + +# ifdef CONFIG_SETUP_MEMORY_TAGS +static void setup_memory_tags(bd_t *bd); +# endif +static void setup_commandline_tag(bd_t *bd, char *commandline); + +# ifdef CONFIG_INITRD_TAG +static void setup_initrd_tag(bd_t *bd, ulong initrd_start, ulong initrd_end); +# endif +static void setup_end_tag(bd_t *bd); + +static struct tag *params; +#endif /* CONFIG_SETUP_MEMORY_TAGS || CONFIG_CMDLINE_TAG || CONFIG_INITRD_TAG */ + +int do_bootm_linux(int flag, int argc, char *argv[], bootm_headers_t *images) +{ + bd_t *bd = gd->bd; + char *s; + int machid = bd->bi_arch_number; + void (*theKernel)(int zero, int arch, uint params); + +#ifdef CONFIG_CMDLINE_TAG + char *commandline = getenv("bootargs"); +#endif + + if ((flag != 0) && (flag != BOOTM_STATE_OS_GO)) + return 1; + + theKernel = (void (*)(int, int, uint))images->ep; + + s = getenv("machid"); + if (s) { + machid = simple_strtoul(s, NULL, 16); + printf("Using machid 0x%x from environment\n", machid); + } + + show_boot_progress(15); + + debug("## Transferring control to Linux (at address %08lx) ...\n", + (ulong)theKernel); + +#if defined(CONFIG_SETUP_MEMORY_TAGS) || \ + defined(CONFIG_CMDLINE_TAG) || \ + defined(CONFIG_INITRD_TAG) || \ + defined(CONFIG_SERIAL_TAG) || \ + defined(CONFIG_REVISION_TAG) + setup_start_tag(bd); +#ifdef CONFIG_SERIAL_TAG + setup_serial_tag(¶ms); +#endif +#ifdef CONFIG_REVISION_TAG + setup_revision_tag(¶ms); +#endif +#ifdef CONFIG_SETUP_MEMORY_TAGS + setup_memory_tags(bd); +#endif +#ifdef CONFIG_CMDLINE_TAG + setup_commandline_tag(bd, commandline); +#endif +#ifdef CONFIG_INITRD_TAG + if (images->rd_start && images->rd_end) + setup_initrd_tag(bd, images->rd_start, images->rd_end); +#endif + setup_end_tag(bd); +#endif + + /* we assume that the kernel is in place */ + printf("\nStarting kernel ...\n\n"); + +#ifdef CONFIG_USB_DEVICE + { + extern void udc_disconnect(void); + udc_disconnect(); + } +#endif + + cleanup_before_linux(); + + theKernel(0, machid, bd->bi_boot_params); + /* does not return */ + + return 1; +} + + +#if defined(CONFIG_SETUP_MEMORY_TAGS) || \ + defined(CONFIG_CMDLINE_TAG) || \ + defined(CONFIG_INITRD_TAG) || \ + defined(CONFIG_SERIAL_TAG) || \ + defined(CONFIG_REVISION_TAG) +static void setup_start_tag(bd_t *bd) +{ + params = (struct tag *)bd->bi_boot_params; + + params->hdr.tag = ATAG_CORE; + params->hdr.size = tag_size(tag_core); + + params->u.core.flags = 0; + params->u.core.pagesize = 0; + params->u.core.rootdev = 0; + + params = tag_next(params); +} + + +#ifdef CONFIG_SETUP_MEMORY_TAGS +static void setup_memory_tags(bd_t *bd) +{ + int i; + + for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) { + params->hdr.tag = ATAG_MEM; + params->hdr.size = tag_size(tag_mem32); + + params->u.mem.start = bd->bi_dram[i].start; + params->u.mem.size = bd->bi_dram[i].size; + + params = tag_next(params); + } +} +#endif /* CONFIG_SETUP_MEMORY_TAGS */ + + +static void setup_commandline_tag(bd_t *bd, char *commandline) +{ + char *p; + + if (!commandline) + return; + + /* eat leading white space */ + for (p = commandline; *p == ' '; p++) + ; + + /* skip non-existent command lines so the kernel will still + * use its default command line. + */ + if (*p == '\0') + return; + + params->hdr.tag = ATAG_CMDLINE; + params->hdr.size = + (sizeof(struct tag_header) + strlen(p) + 1 + 4) >> 2; + + strcpy(params->u.cmdline.cmdline, p) + ; + + params = tag_next(params); +} + + +#ifdef CONFIG_INITRD_TAG +static void setup_initrd_tag(bd_t *bd, ulong initrd_start, ulong initrd_end) +{ + /* an ATAG_INITRD node tells the kernel where the compressed + * ramdisk can be found. ATAG_RDIMG is a better name, actually. + */ + params->hdr.tag = ATAG_INITRD2; + params->hdr.size = tag_size(tag_initrd); + + params->u.initrd.start = initrd_start; + params->u.initrd.size = initrd_end - initrd_start; + + params = tag_next(params); +} +#endif /* CONFIG_INITRD_TAG */ + +#ifdef CONFIG_SERIAL_TAG +void setup_serial_tag(struct tag **tmp) +{ + struct tag *params = *tmp; + struct tag_serialnr serialnr; + void get_board_serial(struct tag_serialnr *serialnr); + + get_board_serial(&serialnr); + params->hdr.tag = ATAG_SERIAL; + params->hdr.size = tag_size(tag_serialnr); + params->u.serialnr.low = serialnr.low; + params->u.serialnr.high = serialnr.high; + params = tag_next(params); + *tmp = params; +} +#endif + +#ifdef CONFIG_REVISION_TAG +void setup_revision_tag(struct tag **in_params) +{ + u32 rev = 0; + u32 get_board_rev(void); + + rev = get_board_rev(); + params->hdr.tag = ATAG_REVISION; + params->hdr.size = tag_size(tag_revision); + params->u.revision.rev = rev; + params = tag_next(params); +} +#endif /* CONFIG_REVISION_TAG */ + + +static void setup_end_tag(bd_t *bd) +{ + params->hdr.tag = ATAG_NONE; + params->hdr.size = 0; +} + +#endif /* CONFIG_SETUP_MEMORY_TAGS || CONFIG_CMDLINE_TAG || CONFIG_INITRD_TAG */ diff --git a/arch/nds32/lib/interrupts.c b/arch/nds32/lib/interrupts.c new file mode 100644 index 0000000..6c3b0f0 --- /dev/null +++ b/arch/nds32/lib/interrupts.c @@ -0,0 +1,131 @@ +/* + * (C) Copyright 2002 + * Sysgo Real-Time Solutions, GmbH <www.elinos.com> + * Alex Zuepke azu@sysgo.de + * + * Copyright (C) 2011 Andes Technology Corporation + * Shawn Lin, Andes Technology Corporation nobuhiro@andestech.com + * Macpaul Lin, Andes Technology Corporation macpaul@andestech.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/ptregs.h> +#include <asm/system.h> +#undef INTERRUPT_MODE + +extern void reset_cpu(ulong addr); + +static int int_flag; + +int irq_flags; /* needed by asm-nds32/system.h */ + +int GIE_STATUS(void) +{ + int ret; + + __asm__ __volatile__ ( + "mfsr $p0, $psw\n\t" + "andi %0, %0, 0x1\n\t" + : "=r" (ret) + : + : "memory" + ); + return ret; +} + +#ifdef CONFIG_USE_INTERRUPT + +/* enable interrupts */ +void enable_interrupts(void) +{ + local_irq_restore(int_flag); +} + +/* + * disable interrupts + * Return TRUE if GIE is enabled before we disable it. + */ +int disable_interrupts(void) +{ + + int gie_ori_status; + + gie_ori_status = GIE_STATUS(); + + local_irq_save(int_flag); + + return gie_ori_status; +} +#endif + +void bad_mode(void) +{ + panic("Resetting CPU ...\n"); + reset_cpu(0); +} + +void show_regs(struct pt_regs *regs) +{ + const char *processor_modes[] = {"USER", "SuperUser" , "HyperVisor"}; + + printf("\n"); + printf("pc : [<%08lx>] sp: [<%08lx>]\n" + "ra : %08lx gp : %08lx fp : %08lx\n", + regs->PC, regs->SP, regs->RA, regs->GP, regs->FP); + printf("D1H: %08lx D1L: %08lx D0H: %08lx D0L: %08lx\n", + regs->D1HI, regs->D1LO, regs->D0HI, regs->D0LO); + printf("r27: %08lx r26: %08lx r25: %08lx r24: %08lx\n", + regs->R27, regs->R26, regs->R25, regs->R24); + printf("r23: %08lx r22: %08lx r21: %08lx r20: %08lx\n", + regs->R23, regs->R22, regs->R21, regs->R20); + printf("r19: %08lx r18: %08lx r17: %08lx r16: %08lx\n", + regs->R19, regs->R18, regs->R17, regs->R16); + printf("r15: %08lx r14: %08lx r13: %08lx r12: %08lx\n", + regs->R15, regs->R14, regs->R13, regs->R12); + printf("r11: %08lx r10: %08lx r9 : %08lx r8 : %08lx\n", + regs->R11, regs->R10, regs->R9, regs->R8); + printf("r7 : %08lx r6 : %08lx r5 : %08lx r4 : %08lx\n", + regs->R7, regs->R6, regs->R5, regs->R4); + printf("r3 : %08lx r2 : %08lx r1 : %08lx r0 : %08lx\n", + regs->R3, regs->R2, regs->R1, regs->R0); + printf(" Interrupts %s Mode %s\n", + interrupts_enabled(regs) ? "on" : "off", + processor_modes[processor_mode(regs)]); +} + +void do_interruption(struct pt_regs *pt_regs, int EVIC_num) +{ + const char *interruption_type[] = { + "Reset", + "TLB Fill", + "TLB Not Present", + "TLB Misc", + "VLPT Miss", + "Cache Parity Error", + "Debug", + "General Exception", + "External Interrupt" + }; + + printf("%s\n", interruption_type[EVIC_num]); + show_regs(pt_regs); + bad_mode(); +}