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authorMatthias Weisser <weisserm@arcor.de>2011-07-06 00:28:31 +0000
committerAlbert ARIBAUD <albert.u.boot@aribaud.net>2011-07-14 15:41:24 +0200
commit23210d8e1b369404c27ec6cc4a44ed069c4bb5ac (patch)
tree08db1b8173e06f9836fc197c44f3d0a91d7c7cb7 /arch/arm/cpu
parentdddb7c9ffdb3813c1242aa43b935dd3484c53a35 (diff)
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imx: Add auto generation of asm-offsets.h for imx25
Offsets to registers may be needed in asm code. This patch adds automated generation of these offsets form C structures. Signed-off-by: Matthias Weisser <weisserm@arcor.de>
Diffstat (limited to 'arch/arm/cpu')
-rw-r--r--arch/arm/cpu/arm926ejs/mx25/Makefile2
-rw-r--r--arch/arm/cpu/arm926ejs/mx25/asm-offsets.c60
2 files changed, 62 insertions, 0 deletions
diff --git a/arch/arm/cpu/arm926ejs/mx25/Makefile b/arch/arm/cpu/arm926ejs/mx25/Makefile
index 3c2a65e..9219c06 100644
--- a/arch/arm/cpu/arm926ejs/mx25/Makefile
+++ b/arch/arm/cpu/arm926ejs/mx25/Makefile
@@ -34,6 +34,8 @@ all: $(obj).depend $(LIB)
$(LIB): $(OBJS)
$(call cmd_link_o_target, $(OBJS))
+$(OBJS) : $(TOPDIR)/include/asm/arch/asm-offsets.h
+
#########################################################################
# defines $(obj).depend target
diff --git a/arch/arm/cpu/arm926ejs/mx25/asm-offsets.c b/arch/arm/cpu/arm926ejs/mx25/asm-offsets.c
new file mode 100644
index 0000000..ba8dfd4
--- /dev/null
+++ b/arch/arm/cpu/arm926ejs/mx25/asm-offsets.c
@@ -0,0 +1,60 @@
+/*
+ * Adapted from Linux v2.6.36 kernel: arch/powerpc/kernel/asm-offsets.c
+ *
+ * This program is used to generate definitions needed by
+ * assembly language modules.
+ *
+ * We use the technique used in the OSF Mach kernel code:
+ * generate asm statements containing #defines,
+ * compile this file to assembler, and then extract the
+ * #defines from the assembly-language output.
+ *
+ * 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.
+ */
+
+#include <common.h>
+#include <asm/arch/imx-regs.h>
+
+#include <linux/kbuild.h>
+
+int main(void)
+{
+ /* Clock Control Module */
+ DEFINE(CCM_CCTL, offsetof(struct ccm_regs, cctl));
+ DEFINE(CCM_CGCR0, offsetof(struct ccm_regs, cgr0));
+ DEFINE(CCM_CGCR1, offsetof(struct ccm_regs, cgr1));
+ DEFINE(CCM_CGCR2, offsetof(struct ccm_regs, cgr2));
+ DEFINE(CCM_PCDR2, offsetof(struct ccm_regs, pcdr[2]));
+ DEFINE(CCM_MCR, offsetof(struct ccm_regs, mcr));
+
+ /* Enhanced SDRAM Controller */
+ DEFINE(ESDRAMC_ESDCTL0, offsetof(struct esdramc_regs, ctl0));
+ DEFINE(ESDRAMC_ESDCFG0, offsetof(struct esdramc_regs, cfg0));
+ DEFINE(ESDRAMC_ESDMISC, offsetof(struct esdramc_regs, misc));
+
+ /* Multi-Layer AHB Crossbar Switch */
+ DEFINE(MAX_MPR0, offsetof(struct max_regs, mpr0));
+ DEFINE(MAX_SGPCR0, offsetof(struct max_regs, sgpcr0));
+ DEFINE(MAX_MPR1, offsetof(struct max_regs, mpr1));
+ DEFINE(MAX_SGPCR1, offsetof(struct max_regs, sgpcr1));
+ DEFINE(MAX_MPR2, offsetof(struct max_regs, mpr2));
+ DEFINE(MAX_SGPCR2, offsetof(struct max_regs, sgpcr2));
+ DEFINE(MAX_MPR3, offsetof(struct max_regs, mpr3));
+ DEFINE(MAX_SGPCR3, offsetof(struct max_regs, sgpcr3));
+ DEFINE(MAX_MPR4, offsetof(struct max_regs, mpr4));
+ DEFINE(MAX_SGPCR4, offsetof(struct max_regs, sgpcr4));
+ DEFINE(MAX_MGPCR0, offsetof(struct max_regs, mgpcr0));
+ DEFINE(MAX_MGPCR1, offsetof(struct max_regs, mgpcr1));
+ DEFINE(MAX_MGPCR2, offsetof(struct max_regs, mgpcr2));
+ DEFINE(MAX_MGPCR3, offsetof(struct max_regs, mgpcr3));
+ DEFINE(MAX_MGPCR4, offsetof(struct max_regs, mgpcr4));
+
+ /* AHB <-> IP-Bus Interface */
+ DEFINE(AIPS_MPR_0_7, offsetof(struct aips_regs, mpr_0_7));
+ DEFINE(AIPS_MPR_8_15, offsetof(struct aips_regs, mpr_8_15));
+
+ return 0;
+}