kbuild: move asm-offsets.c from SoC directory to arch/$(ARCH)/lib

U-Boot has supported two kinds of asm-offsets.h.

One is generic for all architectures and its source is located at
./lib/asm-offsets.c.

The other is SoC specific and its source is under SoC directory.
The problem here is that only boards with SoC directory can use
the asm-offsets infrastructure.
Putting asm-offsets.c right under CPU directory does not work.

Now a new demand is coming. PowerPC folks want to use asm-offsets.
But no PowerPC boards have SoC directory.

It seems inconsistent that some boards add asm-offsets.c to SoC
directoreis and some to CPU directories.
It looks more reasonable to put asm-offsets.c under arch/$(ARCH)/lib.

This commit merges asm-offsets.c under SoC directories into
arch/$(ARCH)/lib/asm-offsets.c.

By the way, I doubt the necessity of some entries in asm-offsets.c.
I am leaving refactoring to the board maintainers.
Please check "TODO" in the comment blocks in
arch/{arm,nds32}/lib/asm-offsets.c.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Cc: Yuantian Tang <Yuantian.Tang@freescale.com>

1 files changed, 82 insertions, 0 deletions

diff --git a/arch/nds32/lib/asm-offsets.c b/arch/nds32/lib/asm-offsets.c
new file mode 100644
index 0000000..39e3480
--- /dev/null
+++ b/arch/nds32/lib/asm-offsets.c
@@ -0,0 +1,82 @@
+/*
+ * Adapted from Linux v2.6.36 kernel: arch/powerpc/kernel/asm-offsets.c
+ *
+ * Generate definitions needed by assembly language modules.
+ * This code generates raw asm output which is post-processed to extract
+ * and format the required data.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#include <common.h>
+
+#include <linux/kbuild.h>
+
+int main(void)
+{
+	/*
+	 * TODO : Check if each entry in this file is really necessary.
+	 *   - struct ftahbc02s
+	 *   - struct ftsdmc021
+	 *   - struct andes_pcu
+	 *   - struct dwcddr21mctl
+	 * are used only for generating asm-offsets.h.
+	 * It means their offset addresses are referenced only from assembly
+	 * code. Is it better to define the macros directly in headers?
+	 */
+
+#ifdef CONFIG_FTSMC020
+	OFFSET(FTSMC020_BANK0_CR,	ftsmc020, bank[0].cr);
+	OFFSET(FTSMC020_BANK0_TPR,	ftsmc020, bank[0].tpr);
+#endif
+	BLANK();
+#ifdef CONFIG_FTAHBC020S
+	OFFSET(FTAHBC020S_SLAVE_BSR_4,	ftahbc02s, s_bsr[4]);
+	OFFSET(FTAHBC020S_SLAVE_BSR_6,	ftahbc02s, s_bsr[6]);
+	OFFSET(FTAHBC020S_CR,		ftahbc02s, cr);
+#endif
+	BLANK();
+#ifdef CONFIG_FTPMU010
+	OFFSET(FTPMU010_PDLLCR0,	ftpmu010, PDLLCR0);
+#endif
+	BLANK();
+#ifdef CONFIG_FTSDMC021
+	OFFSET(FTSDMC021_TP1,		ftsdmc021, tp1);
+	OFFSET(FTSDMC021_TP2,		ftsdmc021, tp2);
+	OFFSET(FTSDMC021_CR1,		ftsdmc021, cr1);
+	OFFSET(FTSDMC021_CR2,		ftsdmc021, cr2);
+	OFFSET(FTSDMC021_BANK0_BSR,	ftsdmc021, bank0_bsr);
+	OFFSET(FTSDMC021_BANK1_BSR,	ftsdmc021, bank1_bsr);
+	OFFSET(FTSDMC021_BANK2_BSR,	ftsdmc021, bank2_bsr);
+	OFFSET(FTSDMC021_BANK3_BSR,	ftsdmc021, bank3_bsr);
+#endif
+	BLANK();
+#ifdef CONFIG_ANDES_PCU
+	OFFSET(ANDES_PCU_PCS4,		andes_pcu, pcs4.parm);	/* 0x104 */
+#endif
+	BLANK();
+#ifdef CONFIG_DWCDDR21MCTL
+	OFFSET(DWCDDR21MCTL_CCR,	dwcddr21mctl, ccr);	/* 0x04 */
+	OFFSET(DWCDDR21MCTL_DCR,	dwcddr21mctl, dcr);	/* 0x04 */
+	OFFSET(DWCDDR21MCTL_IOCR,	dwcddr21mctl, iocr);	/* 0x08 */
+	OFFSET(DWCDDR21MCTL_CSR,	dwcddr21mctl, csr);	/* 0x0c */
+	OFFSET(DWCDDR21MCTL_DRR,	dwcddr21mctl, drr);	/* 0x10 */
+	OFFSET(DWCDDR21MCTL_DLLCR0,	dwcddr21mctl, dllcr[0]); /* 0x24 */
+	OFFSET(DWCDDR21MCTL_DLLCR1,	dwcddr21mctl, dllcr[1]); /* 0x28 */
+	OFFSET(DWCDDR21MCTL_DLLCR2,	dwcddr21mctl, dllcr[2]); /* 0x2c */
+	OFFSET(DWCDDR21MCTL_DLLCR3,	dwcddr21mctl, dllcr[3]); /* 0x30 */
+	OFFSET(DWCDDR21MCTL_DLLCR4,	dwcddr21mctl, dllcr[4]); /* 0x34 */
+	OFFSET(DWCDDR21MCTL_DLLCR5,	dwcddr21mctl, dllcr[5]); /* 0x38 */
+	OFFSET(DWCDDR21MCTL_DLLCR6,	dwcddr21mctl, dllcr[6]); /* 0x3c */
+	OFFSET(DWCDDR21MCTL_DLLCR7,	dwcddr21mctl, dllcr[7]); /* 0x40 */
+	OFFSET(DWCDDR21MCTL_DLLCR8,	dwcddr21mctl, dllcr[8]); /* 0x44 */
+	OFFSET(DWCDDR21MCTL_DLLCR9,	dwcddr21mctl, dllcr[9]); /* 0x48 */
+	OFFSET(DWCDDR21MCTL_RSLR0,	dwcddr21mctl, rslr[0]);	/* 0x4c */
+	OFFSET(DWCDDR21MCTL_RDGR0,	dwcddr21mctl, rdgr[0]);	/* 0x5c */
+	OFFSET(DWCDDR21MCTL_DTAR,	dwcddr21mctl, dtar);	/* 0xa4 */
+	OFFSET(DWCDDR21MCTL_MR,		dwcddr21mctl, mr);	/* 0x1f0 */
+#endif
+
+	return 0;
+}