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-rw-r--r--arch/nds32/config.mk35
-rw-r--r--arch/nds32/lib/Makefile46
-rw-r--r--arch/nds32/lib/board.c439
-rw-r--r--arch/nds32/lib/bootm.c241
-rw-r--r--arch/nds32/lib/interrupts.c129
5 files changed, 890 insertions, 0 deletions
diff --git a/arch/nds32/config.mk b/arch/nds32/config.mk
new file mode 100644
index 000000000..c589829ee
--- /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-
+
+CONFIG_STANDALONE_LOAD_ADDR = 0x300000 -T nds32.lds
+
+PLATFORM_RELFLAGS += -fno-strict-aliasing -fno-common -mrelax
+PLATFORM_RELFLAGS += -gdwarf-2
+PLATFORM_CPPFLAGS += -DCONFIG_NDS32 -D__nds32__ -G0 -ffixed-10 -fpie
+
+LDFLAGS_u-boot = --gc-sections --relax
diff --git a/arch/nds32/lib/Makefile b/arch/nds32/lib/Makefile
new file mode 100644
index 000000000..e5c31c312
--- /dev/null
+++ b/arch/nds32/lib/Makefile
@@ -0,0 +1,46 @@
+#
+# (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)
+ $(call cmd_link_o_target, $(OBJS))
+
+#########################################################################
+
+# 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 000000000..1776a7257
--- /dev/null
+++ b/arch/nds32/lib/board.c
@@ -0,0 +1,439 @@
+/*
+ * (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;
+
+ulong monitor_flash_len;
+
+/*
+ * 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);
+
+void __dram_init_banksize(void)
+{
+ gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
+ gd->bd->bi_dram[0].size = gd->ram_size;
+}
+void dram_init_banksize(void)
+ __attribute__((weak, alias("__dram_init_banksize")));
+
+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)
+#ifndef CONFIG_SKIP_LOWLEVEL_INIT
+ pmu_init,
+#endif
+#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 */
+ display_dram_config,
+ NULL,
+};
+
+void board_init_f(ulong bootflag)
+{
+ bd_t *bd;
+ init_fnc_t **init_fnc_ptr;
+ gd_t *id;
+ ulong addr, addr_sp;
+
+ /* Pointer is writable since we allocated a register for it */
+ gd = (gd_t *) ((CONFIG_SYS_INIT_SP_ADDR) & ~0x07);
+
+ memset((void *)gd, 0, GENERATED_GBL_DATA_SIZE);
+
+ gd->mon_len = (unsigned int)(&__bss_end__) - (unsigned int)(&_start);
+
+ for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
+ if ((*init_fnc_ptr)() != 0)
+ hang();
+ }
+
+ debug("monitor len: %08lX\n", gd->mon_len);
+ /*
+ * Ram is setup, size stored in gd !!
+ */
+ debug("ramsize: %08lX\n", gd->ram_size);
+
+ addr = CONFIG_SYS_SDRAM_BASE + gd->ram_size;
+
+#if !(defined(CONFIG_SYS_ICACHE_OFF) && defined(CONFIG_SYS_DCACHE_OFF))
+ /* reserve TLB table */
+ addr -= (4096 * 4);
+
+ /* round down to next 64 kB limit */
+ addr &= ~(0x10000 - 1);
+
+ gd->tlb_addr = addr;
+ debug("TLB table at: %08lx\n", addr);
+#endif
+
+ /* round down to next 4 kB limit */
+ addr &= ~(4096 - 1);
+ debug("Top of RAM usable for U-Boot at: %08lx\n", addr);
+
+#ifdef CONFIG_LCD
+#ifdef CONFIG_FB_ADDR
+ gd->fb_base = CONFIG_FB_ADDR;
+#else
+ /* reserve memory for LCD display (always full pages) */
+ addr = lcd_setmem(addr);
+ gd->fb_base = addr;
+#endif /* CONFIG_FB_ADDR */
+#endif /* CONFIG_LCD */
+
+ /*
+ * reserve memory for U-Boot code, data & bss
+ * round down to next 4 kB limit
+ */
+ addr -= gd->mon_len;
+ addr &= ~(4096 - 1);
+
+ debug("Reserving %ldk for U-Boot at: %08lx\n", gd->mon_len >> 10, addr);
+
+ /*
+ * reserve memory for malloc() arena
+ */
+ addr_sp = addr - TOTAL_MALLOC_LEN;
+ debug("Reserving %dk for malloc() at: %08lx\n",
+ TOTAL_MALLOC_LEN >> 10, addr_sp);
+ /*
+ * (permanently) allocate a Board Info struct
+ * and a permanent copy of the "global" data
+ */
+ addr_sp -= GENERATED_BD_INFO_SIZE;
+ bd = (bd_t *) addr_sp;
+ gd->bd = bd;
+ memset((void *)bd, 0, GENERATED_BD_INFO_SIZE);
+ debug("Reserving %zu Bytes for Board Info at: %08lx\n",
+ GENERATED_BD_INFO_SIZE, addr_sp);
+
+ addr_sp -= GENERATED_GBL_DATA_SIZE;
+ id = (gd_t *) addr_sp;
+ debug("Reserving %zu Bytes for Global Data at: %08lx\n",
+ GENERATED_GBL_DATA_SIZE, addr_sp);
+
+ /* setup stackpointer for exeptions */
+ gd->irq_sp = addr_sp;
+#ifdef CONFIG_USE_IRQ
+ addr_sp -= (CONFIG_STACKSIZE_IRQ + CONFIG_STACKSIZE_FIQ);
+ debug("Reserving %zu Bytes for IRQ stack at: %08lx\n",
+ CONFIG_STACKSIZE_IRQ+CONFIG_STACKSIZE_FIQ, addr_sp);
+#endif
+ /* leave 3 words for abort-stack */
+ addr_sp -= 12;
+
+ /* 8-byte alignment for ABI compliance */
+ addr_sp &= ~0x07;
+ debug("New Stack Pointer is: %08lx\n", addr_sp);
+
+ gd->bd->bi_baudrate = gd->baudrate;
+ /* Ram isn't board specific, so move it to board code ... */
+ dram_init_banksize();
+ display_dram_config(); /* and display it */
+
+ gd->relocaddr = addr;
+ gd->start_addr_sp = addr_sp;
+
+ gd->reloc_off = addr - _TEXT_BASE;
+
+ debug("relocation Offset is: %08lx\n", gd->reloc_off);
+ memcpy(id, (void *)gd, GENERATED_GBL_DATA_SIZE);
+
+ relocate_code(addr_sp, id, addr);
+
+ /* NOTREACHED - relocate_code() does not return */
+}
+
+/*
+ * This is the next part if the initialization sequence: we are now
+ * running from RAM and have a "normal" C environment, i. e. global
+ * data can be written, BSS has been cleared, the stack size in not
+ * that critical any more, etc.
+ */
+void board_init_r(gd_t *id, ulong dest_addr)
+{
+ char *s;
+ bd_t *bd;
+ ulong malloc_start;
+
+ extern void malloc_bin_reloc(void);
+
+ gd = id;
+ bd = gd->bd;
+
+ gd->flags |= GD_FLG_RELOC; /* tell others: relocation done */
+
+ monitor_flash_len = &_end - &_start;
+ debug("monitor flash len: %08lX\n", monitor_flash_len);
+
+ board_init(); /* Setup chipselects */
+
+#if defined(CONFIG_NEEDS_MANUAL_RELOC)
+ /*
+ * We have to relocate the command table manually
+ */
+ fixup_cmdtable(&__u_boot_cmd_start,
+ (ulong)(&__u_boot_cmd_end - &__u_boot_cmd_start));
+#endif /* defined(CONFIG_NEEDS_MANUAL_RELOC) */
+
+#ifdef CONFIG_SERIAL_MULTI
+ serial_initialize();
+#endif
+
+ debug("Now running in RAM - U-Boot at: %08lx\n", dest_addr);
+
+ /* The Malloc area is immediately below the monitor copy in DRAM */
+ malloc_start = dest_addr - TOTAL_MALLOC_LEN;
+ mem_malloc_init(malloc_start, TOTAL_MALLOC_LEN);
+ malloc_bin_reloc();
+
+#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 */
+
+#if defined(CONFIG_CMD_NAND)
+ puts("NAND: ");
+ nand_init(); /* go init the NAND */
+#endif
+
+#ifdef CONFIG_GENERIC_MMC
+ puts("MMC: ");
+ mmc_initialize(gd->bd);
+#endif
+
+ /* initialize environment */
+ env_relocate();
+
+#if defined(CONFIG_CMD_PCI) || defined(CONFIG_PCI)
+ nds32_pci_init();
+#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
+
+#if defined(CONFIG_USE_IRQ)
+ /* set up exceptions */
+ interrupt_init();
+ /* enable exceptions */
+ enable_interrupts();
+#endif
+
+ /* 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
+
+#if defined(CONFIG_CMD_NET)
+ puts("Net: ");
+
+ 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 000000000..b0a5a0dff
--- /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(&params);
+#endif
+#ifdef CONFIG_REVISION_TAG
+ setup_revision_tag(&params);
+#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 000000000..974d52a1a
--- /dev/null
+++ b/arch/nds32/lib/interrupts.c
@@ -0,0 +1,129 @@
+/*
+ * (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/ptrace.h>
+#include <asm/system.h>
+#undef INTERRUPT_MODE
+
+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"
+ "lp : %08lx gp : %08lx fp : %08lx\n",
+ regs->ipc, regs->sp, regs->lp, 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->r[27], regs->r[26], regs->r[25], regs->r[24]);
+ printf("r23: %08lx r22: %08lx r21: %08lx r20: %08lx\n",
+ regs->r[23], regs->r[22], regs->r[21], regs->r[20]);
+ printf("r19: %08lx r18: %08lx r17: %08lx r16: %08lx\n",
+ regs->r[19], regs->r[18], regs->r[17], regs->r[16]);
+ printf("r15: %08lx r14: %08lx r13: %08lx r12: %08lx\n",
+ regs->r[15], regs->r[14], regs->r[13], regs->r[12]);
+ printf("r11: %08lx r10: %08lx r9 : %08lx r8 : %08lx\n",
+ regs->r[11], regs->r[10], regs->r[9], regs->r[8]);
+ printf("r7 : %08lx r6 : %08lx r5 : %08lx r4 : %08lx\n",
+ regs->r[7], regs->r[6], regs->r[5], regs->r[4]);
+ printf("r3 : %08lx r2 : %08lx r1 : %08lx r0 : %08lx\n",
+ regs->r[3], regs->r[2], regs->r[1], regs->r[0]);
+ 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();
+}
generated by cgit v1.2.3-70-g09d2 (git 2.51.2) at 2025-11-04 04:51:42 +0000