* Author :
* Aneesh V <aneesh@ti.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
+ * SPDX-License-Identifier: GPL-2.0+
*/
#include <asm-offsets.h>
#include <config.h>
#include <linux/linkage.h>
-ENTRY(lowlevel_init)
+.pushsection .text.s_init, "ax"
+WEAK(s_init)
+ bx lr
+ENDPROC(s_init)
+.popsection
+
+.pushsection .text.lowlevel_init, "ax"
+WEAK(lowlevel_init)
/*
- * Setup a temporary stack
+ * Setup a temporary stack. Global data is not available yet.
*/
+#if defined(CONFIG_SPL_BUILD) && defined(CONFIG_SPL_STACK)
+ ldr sp, =CONFIG_SPL_STACK
+#else
ldr sp, =CONFIG_SYS_INIT_SP_ADDR
-
+#endif
+ bic sp, sp, #7 /* 8-byte alignment for ABI compliance */
+#ifdef CONFIG_SPL_DM
+ mov r9, #0
+#else
+ /*
+ * Set up global data for boards that still need it. This will be
+ * removed soon.
+ */
+#ifdef CONFIG_SPL_BUILD
+ ldr r9, =gdata
+#else
+ sub sp, sp, #GD_SIZE
+ bic sp, sp, #7
+ mov r9, sp
+#endif
+#endif
/*
* Save the old lr(passed in ip) and the current lr to stack
*/
push {ip, lr}
/*
- * go setup pll, mux, memory
+ * Call the very early init function. This should do only the
+ * absolute bare minimum to get started. It should not:
+ *
+ * - set up DRAM
+ * - use global_data
+ * - clear BSS
+ * - try to start a console
+ *
+ * For boards with SPL this should be empty since SPL can do all of
+ * this init in the SPL board_init_f() function which is called
+ * immediately after this.
*/
bl s_init
pop {ip, pc}
ENDPROC(lowlevel_init)
+.popsection