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 --- Changes in v2: - Added a change in Makefile which was in wrong patch of the patch set
arch/arm/cpu/arm926ejs/mx25/Makefile | 2 + arch/arm/cpu/arm926ejs/mx25/asm-offsets.c | 60 +++++++++++++++++++++++++++++ arch/arm/include/asm/arch-mx25/imx-regs.h | 39 +++++++++++++++++++ 3 files changed, 101 insertions(+), 0 deletions(-) create mode 100644 arch/arm/cpu/arm926ejs/mx25/asm-offsets.c
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; +} diff --git a/arch/arm/include/asm/arch-mx25/imx-regs.h b/arch/arm/include/asm/arch-mx25/imx-regs.h index 55ad115..62ee4d5 100644 --- a/arch/arm/include/asm/arch-mx25/imx-regs.h +++ b/arch/arm/include/asm/arch-mx25/imx-regs.h @@ -141,6 +141,45 @@ struct fuse_bank0_regs { u32 mac_addr[6]; };
+/* Multi-Layer AHB Crossbar Switch (MAX) registers */ +struct max_regs { + u32 mpr0; + u32 pad00[3]; + u32 sgpcr0; + u32 pad01[59]; + u32 mpr1; + u32 pad02[3]; + u32 sgpcr1; + u32 pad03[59]; + u32 mpr2; + u32 pad04[3]; + u32 sgpcr2; + u32 pad05[59]; + u32 mpr3; + u32 pad06[3]; + u32 sgpcr3; + u32 pad07[59]; + u32 mpr4; + u32 pad08[3]; + u32 sgpcr4; + u32 pad09[251]; + u32 mgpcr0; + u32 pad10[63]; + u32 mgpcr1; + u32 pad11[63]; + u32 mgpcr2; + u32 pad12[63]; + u32 mgpcr3; + u32 pad13[63]; + u32 mgpcr4; +}; + +/* AHB <-> IP-Bus Interface (AIPS) */ +struct aips_regs { + u32 mpr_0_7; + u32 mpr_8_15; +}; + #endif
/* AIPS 1 */