X-Git-Url: https://git.kernelconcepts.de/?p=karo-tx-uboot.git;a=blobdiff_plain;f=include%2Fppc_asm.tmpl;h=5fcef9cebb48892d46e080aeca59388aca1a18db;hp=f15628aa2e530021507a8ef9d50499e0f139c5f4;hb=f7582ce8496f19edf845d1f62c4b7f385e4cd864;hpb=6b44466cdeabd54f9dabcd2f00d3a232a4b854a9

diff --git a/include/ppc_asm.tmpl b/include/ppc_asm.tmpl
index f15628aa2e..5fcef9cebb 100644
--- a/include/ppc_asm.tmpl
+++ b/include/ppc_asm.tmpl
@@ -2,23 +2,7 @@
  * (C) Copyright 2000-2002
  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
  *
- * 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+
  */
 
 /*
@@ -35,7 +19,7 @@
  *
  * Stolen from prepboot/bootldr.h, (C) 1998 Gabriel Paubert, paubert@iram.es
  *
- * Uses r14 to access the GOT
+ * Uses r12 to access the GOT
  */
 
 #define START_GOT			\
@@ -50,13 +34,13 @@
 	.text	2		;	\
 0:	.long	.LCTOC1-1f	;	\
 	.text			;	\
-1:	mflr	r14		;	\
-	lwz	r0,0b-1b(r14)	;	\
-	add	r14,r0,r14	;
+1:	mflr	r12		;	\
+	lwz	r0,0b-1b(r12)	;	\
+	add	r12,r0,r12	;
 
 #define GOT_ENTRY(NAME)		.L_ ## NAME = . - .LCTOC1 ; .long NAME
 
-#define GOT(NAME)		.L_ ## NAME (r14)
+#define GOT(NAME)		.L_ ## NAME (r12)
 
 
 /***************************************************************************
@@ -113,11 +97,11 @@
 
 #if  defined(CONFIG_5xx)
 /* Some special purpose registers */
-#define DER	149		/* Debug Enable Register	    	*/
-#define COUNTA	150		/* Breakpoint Counter	    	 	*/
-#define COUNTB	151		/* Breakpoint Counter	    	 	*/
-#define LCTRL1	156		/* Load/Store Support	    	 	*/
-#define LCTRL2	157		/* Load/Store Support	    	 	*/
+#define DER	149		/* Debug Enable Register		*/
+#define COUNTA	150		/* Breakpoint Counter			*/
+#define COUNTB	151		/* Breakpoint Counter			*/
+#define LCTRL1	156		/* Load/Store Support			*/
+#define LCTRL2	157		/* Load/Store Support			*/
 #define ICTRL	158		/* I-Bus Support Control Register	*/
 #define EID	81
 #endif	/* CONFIG_5xx */
@@ -151,7 +135,7 @@
 
 #define PLPRCR	0x00000284
 
-#elif defined(CONFIG_8260)
+#elif defined(CONFIG_MPC8260)
 
 #define HID2		1011
 
@@ -175,7 +159,7 @@
 #define IM_IMMR		(IM_REGBASE+0x01a8)
 #define IM_SCCR		(IM_REGBASE+0x0c80)
 
-#elif defined(CONFIG_MPC5xxx) || defined(CONFIG_MPC8220)
+#elif defined(CONFIG_MPC5xxx)
 
 #define HID0_ICE_BITPOS	16
 #define HID0_DCE_BITPOS	17
@@ -235,7 +219,7 @@
 	stw	r22,_CTR(r21);	\
 	mfspr	r20,XER;	\
 	stw	r20,_XER(r21);	\
-	mfspr	r20,DEAR;	\
+	mfspr	r20, DAR_DEAR;	\
 	stw	r20,_DAR(r21);	\
 	mfspr	r22,reg1;	\
 	mfspr	r23,reg2;	\
@@ -257,48 +241,43 @@
  * OFFSET values only; they must be relocated first before they can
  * be used!
  */
-#define STD_EXCEPTION(n, label, hdlr)			\
-	. = n;						\
-label:							\
-	EXCEPTION_PROLOG(SRR0, SRR1);			\
-	lwz	r3,GOT(transfer_to_handler);		\
-	mtlr	r3;					\
-	addi	r3,r1,STACK_FRAME_OVERHEAD;		\
-	li	r20,MSR_KERNEL;				\
+#define COPY_EE(d, s)		rlwimi d,s,0,16,16
+#define NOCOPY(d, s)
+#define EXC_XFER_TEMPLATE(label, hdlr, msr, copyee)	\
+	bl	1f;					\
+1:	mflr    r20;					\
+	lwz	r20,(.L_ ## label)-1b+8(r20);		\
+	mtlr	r20;					\
+	li	r20,msr;				\
+	copyee(r20,r23);				\
 	rlwimi	r20,r23,0,25,25;			\
-	blrl;	 					\
+	blrl;						\
 .L_ ## label :						\
 	.long	hdlr - _start + _START_OFFSET;		\
-	.long	int_return - _start + _START_OFFSET
+	.long	int_return - _start + _START_OFFSET;	\
+	.long	transfer_to_handler - _start + _START_OFFSET
+
+#define STD_EXCEPTION(n, label, hdlr)				\
+	. = n;							\
+label:								\
+	EXCEPTION_PROLOG(SRR0, SRR1);				\
+	addi	r3,r1,STACK_FRAME_OVERHEAD;			\
+	EXC_XFER_TEMPLATE(label, hdlr, MSR_KERNEL, NOCOPY)	\
 
 #define CRIT_EXCEPTION(n, label, hdlr)				\
-        . = n;							\
+	. = n;							\
 label:								\
-        EXCEPTION_PROLOG(csrr0, csrr1);				\
-        lwz     r3,GOT(transfer_to_handler);			\
-        mtlr    r3;						\
-        addi    r3,r1,STACK_FRAME_OVERHEAD;			\
-        li      r20,(MSR_KERNEL & ~(MSR_ME|MSR_DE|MSR_CE));	\
-        rlwimi  r20,r23,0,25,25;				\
-        blrl;							\
-.L_ ## label :							\
-        .long   hdlr - _start + _START_OFFSET;			\
-        .long   crit_return - _start + _START_OFFSET
-
-#ifdef CONFIG_440
+	EXCEPTION_PROLOG(CSRR0, CSRR1);				\
+	addi	r3,r1,STACK_FRAME_OVERHEAD;			\
+	EXC_XFER_TEMPLATE(label, hdlr,				\
+	MSR_KERNEL & ~(MSR_ME|MSR_DE|MSR_CE), NOCOPY)		\
+
 #define MCK_EXCEPTION(n, label, hdlr)				\
-        . = n;							\
+	. = n;							\
 label:								\
-        EXCEPTION_PROLOG(MCSRR0, MCSRR1);			\
-        lwz     r3,GOT(transfer_to_handler);			\
-        mtlr    r3;						\
-        addi    r3,r1,STACK_FRAME_OVERHEAD;			\
-        li      r20,(MSR_KERNEL & ~(MSR_ME|MSR_DE|MSR_CE));	\
-        rlwimi  r20,r23,0,25,25;				\
-        blrl;							\
-.L_ ## label :							\
-        .long   hdlr - _start + _START_OFFSET;			\
-        .long   mck_return - _start + _START_OFFSET
-#endif /* CONFIG_440  */
+	EXCEPTION_PROLOG(MCSRR0, MCSRR1);			\
+	addi	r3,r1,STACK_FRAME_OVERHEAD;			\
+	EXC_XFER_TEMPLATE(label, hdlr,				\
+	MSR_KERNEL & ~(MSR_ME|MSR_DE|MSR_CE), NOCOPY)		\
 
 #endif	/* __PPC_ASM_TMPL__ */