* (C) Copyright 2003 Motorola Inc. (MPC85xx port)
* Xianghua Xiao (X.Xiao@motorola.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 <common.h>
#include <command.h>
#include <asm/processor.h>
#include <asm/io.h>
+#ifdef CONFIG_POST
+#include <post.h>
+#endif
int interrupt_init_cpu(unsigned int *decrementer_count)
{
ccsr_pic_t __iomem *pic = (void *)CONFIG_SYS_MPC8xxx_PIC_ADDR;
+#ifdef CONFIG_POST
+ /*
+ * The POST word is stored in the PIC's TFRR register which gets
+ * cleared when the PIC is reset. Save it off so we can restore it
+ * later.
+ */
+ ulong post_word = post_word_load();
+#endif
+
out_be32(&pic->gcr, MPC85xx_PICGCR_RST);
while (in_be32(&pic->gcr) & MPC85xx_PICGCR_RST)
;
*decrementer_count = get_tbclk() / CONFIG_SYS_HZ;
/* PIE is same as DIE, dec interrupt enable */
- mtspr(SPRN_TCR, TCR_PIE);
+ mtspr(SPRN_TCR, mfspr(SPRN_TCR) | TCR_PIE);
#ifdef CONFIG_INTERRUPTS
pic->iivpr1 = 0x810001; /* 50220 enable ecm interrupts */
pic->ctpr=0; /* 40080 clear current task priority register */
#endif
+#ifdef CONFIG_POST
+ post_word_store(post_word);
+#endif
+
return (0);
}