Initial dump from Zyxel

package/boot/uboot-zyxel/files/cpu/arc700/Makefile

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+#
+#  Copyright Codito Technologies (www.codito.com)
+#
+#  cpu/arc/Makefile
+#
+#  Copyright (C) 
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2 as
+# published by the Free Software Foundation.
+# 
+# Authors : Sandeep Patil (sandeep.patil@codito.com) 
+# 			Pradeep Sawlani (pradeep.sawlani@codito.com) 
+#
+
+
+include $(TOPDIR)/config.mk
+
+LIB	= $(obj)lib$(CPU).a
+
+START	= start.o
+COBJS	= cpu.o interrupts.o
+SOBJS	=
+
+SRCS    := $(START:.o=.S) $(SOBJS:.o=.S) $(COBJS:.o=.c)
+OBJS    := $(addprefix $(obj),$(COBJS) $(SOBJS))
+START   := $(addprefix $(obj),$(START))
+
+all:	$(obj).depend $(START) $(LIB)
+
+$(LIB):	$(OBJS)
+	$(AR) $(ARFLAGS) $@ $(OBJS)
+
+#########################################################################
+
+# defines $(obj).depend target
+include $(SRCTREE)/rules.mk
+
+sinclude $(obj).depend
+
+#########################################################################

package/boot/uboot-zyxel/files/cpu/arc700/cpu.c

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+/*
+ * Copyright Codito Technologies (www.codito.com) 
+ *
+ * cpu/arc/cpu.c
+ *
+ * Copyright (C) 
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ * 
+ * Authors :Sandeep Patil (sandeep.patil@codito.com)
+ * 			Pradeep Sawlani (pradeep.sawlani@codito.com)
+ */
+
+#include <command.h>
+#include <common.h>
+#include <asm/arcregs.h>
+
+
+int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+	
+#if CFG_UBOOT_ON_FLASH  	
+	/* if uboot is on flash then boot agian from flash */
+	void (*reset)();
+	reset = (void (*)())0x0;
+	(*reset)();
+#endif	
+
+}
+
+
+void disable_icache(void)
+{
+	__asm__ __volatile (	"lr  r0,[0x11] \n\t"
+				"or  r0,r0,1 \n\t"
+				"sr  r0,[0x11] \n\t"
+				::
+				:"r0");	
+
+}
+void dcache_disable(void)
+{
+	/* Flush D cache */
+	__asm__ __volatile (	
+			"sr  1, [0x47] \n\t"
+			::
+			);
+	/* Disable D cache */
+	__asm__ __volatile (	
+			"lr  r0,[0x48] \n\t"
+			"or  r0,r0,1 \n\t"
+			"sr  r0,[0x48] \n\t"
+			::
+			:"r0");	
+	
+
+
+}
+
+dcache_enable()
+{
+
+}
+
+dcache_status()
+{
+}
+
+
+
+void flush_cache (unsigned long dummy1, unsigned long dummy2)
+{
+	/* flushing data cache */
+	write_new_aux_reg(ARC_REG_DC_FLSH, 1);
+
+	/* poll for completion */
+	while (read_new_aux_reg(ARC_REG_DC_CTRL) & (1<<8));
+
+	/* Invalidate instruction cache */
+	write_new_aux_reg(ARC_REG_IC_IVIC, 1);
+	    
+	/* read will only comple when invalidation complete */
+	read_new_aux_reg(ARC_REG_IC_CTRL);
+}	
+
+/*
+ * disable dcache and icahce
+ */
+
+int cpu_init(void)
+{
+	disable_interrupts();
+	return 0;
+}
+
+

package/boot/uboot-zyxel/files/cpu/arc700/interrupts.c

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+/*
+ *  Copyright Codito Technologies (www.codito.com) 
+ *
+ *  cpu/arc/interrupts.c
+ *
+ *  Copyright (C) 
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ * 
+ * Authors : Sandeep Patil (sandeep.patil@codito.com)
+ * 			 Pradeep Sawlani (pradeep.sawlani@codito.com)
+ */
+#include <asm/arcregs.h> 
+
+void disable_interrupts(void)
+{
+	unsigned int status;
+	status = read_new_aux_reg(ARC_REG_STATUS32);
+	status &= STATUS_DISABLE_INTERRUPTS;
+/*	write_new_aux_reg(ARC_REG_STATUS32,status); */
+	__asm__ __volatile__ (
+		"FLAG %0"
+		:
+	       	:"r"(status)
+		);
+
+}
+
+void enable_interrupts(void)
+{
+	unsigned int status ;
+	status = read_new_aux_reg(ARC_REG_STATUS32);
+	status |= STATUS_E1_MASK;
+	status |= STATUS_E2_MASK;
+	write_new_aux_reg(ARC_REG_STATUS32,status);
+}
+

package/boot/uboot-zyxel/files/cpu/arc700/start.S

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+/* 
+ * Copyright Codito Technologies (www.codito.com) 
+ *
+ *  cpu/arc/start.S
+ *
+ *  Copyright (C) 
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ * 
+ * Authors : Sandeep Patil (sandeep.patil@codito.com)
+ *  		 Pradeep Sawlani (pradeep.sawlani@codito.com)
+ */
+
+#include <asm/arcregs.h>	/* required for STATUS_H_SET */
+#include <config.h>
+
+	/* .text section loaded at TEXT_BASE defined in board/aa3/config.mk */
+	.section .text , "ax" , @progbits
+	.type _start, @function
+	.align 4
+	.globl _start
+
+.globl _TEXT_BASE
+_TEXT_BASE:
+	.word TEXT_BASE
+	
+.globl _bss_start
+_bss_start:
+	.word __bss_start
+
+.globl _bss_end
+_bss_end:
+	.word __bss_end
+
+.globl _arcboot_start
+_arcboot_start:
+	.word _start		
+
+_start:
+	/* Disable interrupts */
+/*	lr    r2,[ARC_REG_STATUS32]	
+	and   r2,r2,STATUS_DISABLE_INTERRUPTS
+	sr    r2,[ARC_REG_STATUS32]
+*/	
+
+#if CONFIG_SYS_UBOOT_ON_FLASH
+	/* For relocation following registers are used : 
+	*  r1 : destination
+	*  r2 : source 
+	*  r3 : till
+	*  r4 : jump to next loop
+	*  r5 : temporary storage
+	*  r6 : jump to same loop   
+	*/
+
+	/* Relocate vector table if necessary */
+#if CONFIG_SYS_FLASH_BASE
+				
+	mov r1,0x0	
+	mov r2,CONFIG_SYS_FLASH_BASE	        /* vector table start address in flash is (__vector_start + flash base - text base) since vector start and text base
+					   are same we move only CONFIG_SYS_FLASH_BASE */
+
+ 
+	mov r3,__vector_end		/* vector end table address in flash is (__vector_end + flash base - text base) */
+	add r3,r3,CONFIG_SYS_FLASH_BASE-TEXT_BASE
+
+	mov r4,relocate_text 			/* address of relocate text in flash = relocate text + flash base - text base */
+	add r4,r4,CONFIG_SYS_FLASH_BASE-TEXT_BASE
+	
+	mov r6,copy_vector_table
+	add r6,r6,CONFIG_SYS_FLASH_BASE-TEXT_BASE
+copy_vector_table :
+		cmp r2,r3
+		JEQ [r4]
+	
+		/* copy from r2 to dest i.e in r1 register which point to 0x0 */	
+		ld.ab r5,[r2,4]
+		st.ab r5,[r1,4]
+		
+		j [r6]
+		
+#endif /* CONFIG_SYS_FLASH_BASE */
+
+	/* Relocate text section */
+relocate_text:
+	mov r1,__text_start
+	
+	mov r2,__text_start
+	add r2,r2,CONFIG_SYS_FLASH_BASE-TEXT_BASE
+
+	mov r3,__text_end
+	add r3,r3,CONFIG_SYS_FLASH_BASE-TEXT_BASE
+
+
+	mov r4,relocate_data 	
+	add r4,r4,CONFIG_SYS_FLASH_BASE-TEXT_BASE
+
+	mov r6,copy_text_section
+	add r6,r6,CONFIG_SYS_FLASH_BASE-TEXT_BASE
+
+copy_text_section :
+		cmp r2,r3
+		JEQ [r4]
+	
+		/* copy from r2 to dest i.e in r1 register */	
+		ld.ab r5,[r2,4]
+		st.ab r5,[r1,4]
+		
+		j [r6]
+			
+
+	/* Relocate data section */
+relocate_data:
+	mov r1,__data_start
+
+	mov r2,__data_start
+	add r2,r2,CONFIG_SYS_FLASH_BASE-TEXT_BASE
+
+	mov r3,__data_end
+	add r3,r3,CONFIG_SYS_FLASH_BASE-TEXT_BASE
+
+	mov r4,fill_bss
+	
+	mov r6,copy_data_section
+	add r6,r6,CONFIG_SYS_FLASH_BASE-TEXT_BASE
+
+copy_data_section :
+	
+		cmp r2,r3
+		JEQ [r4]
+	
+		/* copy from r2 to dest i.e in r1 register */	
+		ld.ab r5,[r2,4]
+		st.ab r5,[r1,4]
+		
+		j [r6]
+
+
+#endif /* FLASH */
+/* This code will be executed from ram */	
+	.globl fill_bass
+fill_bss:
+	/* Clear bss */
+	mov_s r2, __bss_start
+	mov_s r3, __bss_end
+
+_clear_bss:
+	st.ab 0,[r2,4]
+	brlt  r2,r3,_clear_bss
+	
+	/* setup stack pointer */
+	mov sp,TEXT_BASE - CONFIG_SYS_MALLOC_LEN - 4 
+	mov fp,sp	
+	jal start_arcboot
+
+	/* Interrupt service routines */
+res_service	:	
+mem_service	:
+instr_service	:
+handle_interrupt:
+EV_MachineCheck	:
+
+EV_TLBMissI	:
+EV_TLBMissD	:
+EV_TLBProtV	:
+EV_PrivilegeV	:
+EV_Trap		:
+EV_Extension	:
+reserved	:
+			FLAG STATUS_H_SET
+			NOP
+			NOP
+			NOP