cpu/mcf530x/start.S

3  * Based on code from Bernhard Kuhn <bkuhn@metrowerks.com>
5  * SPDX-License-Identifier:	GPL-2.0+
8 #include <asm-offsets.h>
20 	moveml	%d0-%d7/%a0-%a6,%sp@
24 	moveml	%sp@,%d0-%d7/%a0-%a6;
29 /* If we come from a pre-loader we don't need an initial exception
38  * These vectors are to catch any un-intended traps.
45 .long	_start - CONFIG_SYS_TEXT_BASE
111 	 * if we come from a pre-loader we have no exception table and
119 	/* initialize general use internal ram */
129 	/* setup stack initially on top of internal static ram  */
136 	move.l	%sp, -(%sp)
139 	/* update stack and frame-pointers */
144 	move.l	%d0, -(%sp)
147 	/* run low-level CPU init code (from flash) */
150 	/* run low-level board init code (from flash) */
151 	clr.l	%sp@-
161  * This "function" does not return, instead it continues in RAM
162  * after relocating the monitor code.
175 	/* copy the code to RAM */
183  * initialization, now running from RAM.
186 	add.l	#(in_ram - CONFIG_SYS_MONITOR_BASE), %a1
196 	add.l	#(_sbss - CONFIG_SYS_MONITOR_BASE), %a1
198 	add.l	#(_ebss - CONFIG_SYS_MONITOR_BASE), %d1
205 	 * fix got table in RAM
208 	add.l	#(__got_start - CONFIG_SYS_MONITOR_BASE), %a1
214 	add.l	#(__got_end - CONFIG_SYS_MONITOR_BASE), %a2
224 	/* calculate relative jump to board_init_r in ram */
226 	add.l	#(board_init_r - CONFIG_SYS_MONITOR_BASE), %a1
229 	move.l	%a0,-(%sp)	/* dest_addr */
230 	move.l	%d0,-(%sp)	/* gd */
239 /* exception code */
247 	movel	%sp,%sp@-
255 	movel	%sp,%sp@-
265 .ascii	" (", U_BOOT_DATE, " - ", U_BOOT_TIME, ")"