[PATCH 1/4] PowerPC 440EPx: Sequoia bootwrapper

[Josh Boyer]

On Tue, 28 Aug 2007 20:56:10 +0400
Valentine Barshak <vbarshak at ru.mvista.com> wrote:

> +/* 4xx DDR1/2 Denali memory controller support */
> +/* DDR0 registers */
> +#define DDR0_02			2
> +#define DDR0_08			8
> +#define DDR0_10			10
> +#define DDR0_14			14
> +#define DDR0_42			42
> +#define DDR0_43			43
> +
> +/* DDR0_02 */
> +#define DDR_START		0x1
> +#define DDR_START_SHIFT		0
> +#define DDR_MAX_CS_REG		0x3
> +#define DDR_MAX_CS_REG_SHIFT	24
> +#define DDR_MAX_COL_REG		0xf
> +#define DDR_MAX_COL_REG_SHIFT	16
> +#define DDR_MAX_ROW_REG		0xf
> +#define DDR_MAX_ROW_REG_SHIFT	8
> +/* DDR0_08 */
> +#define DDR_DDR2_MODE		0x1
> +#define DDR_DDR2_MODE_SHIFT	0
> +/* DDR0_10 */
> +#define DDR_CS_MAP		0x3
> +#define DDR_CS_MAP_SHIFT	8
> +/* DDR0_14 */
> +#define DDR_REDUC		0x1
> +#define DDR_REDUC_SHIFT		16
> +/* DDR0_42 */
> +#define DDR_APIN		0x7
> +#define DDR_APIN_SHIFT		24
> +/* DDR0_43 */
> +#define DDR_COL_SZ		0x7
> +#define DDR_COL_SZ_SHIFT	8
> +#define DDR_BANK8		0x1
> +#define DDR_BANK8_SHIFT		0
> +
> +#define DDR_GET_VAL(val, mask, shift)	(((val) >> (shift)) & (mask))

Hm.  Having these as just DDR_... seems like it would lead to confusion
if there are other DDR controllers that get added later.  But I'm not
too picky either way.

> diff -ruN linux-2.6.orig/arch/powerpc/boot/4xx.h linux-2.6/arch/powerpc/boot/4xx.h
> --- linux-2.6.orig/arch/powerpc/boot/4xx.h	2007-08-27 14:08:42.000000000 +0400
> +++ linux-2.6/arch/powerpc/boot/4xx.h	2007-08-28 17:04:51.000000000 +0400
> @@ -12,6 +12,7 @@
>  #define _POWERPC_BOOT_4XX_H_
> 
>  void ibm4xx_fixup_memsize(void);
> +void ibm4xx_denali_fixup_memsize(void);
>  void ibm44x_dbcr_reset(void);
>  void ibm40x_dbcr_reset(void);
>  void ibm4xx_quiesce_eth(u32 *emac0, u32 *emac1);
> diff -ruN linux-2.6.orig/arch/powerpc/boot/cuboot-sequoia.c linux-2.6/arch/powerpc/boot/cuboot-sequoia.c
> --- linux-2.6.orig/arch/powerpc/boot/cuboot-sequoia.c	1970-01-01 03:00:00.000000000 +0300
> +++ linux-2.6/arch/powerpc/boot/cuboot-sequoia.c	2007-08-28 17:21:55.000000000 +0400
> @@ -0,0 +1,67 @@

<snip>

> +
> +#include <stdarg.h>
> +#include <stddef.h>
> +#include "types.h"
> +#include "elf.h"
> +#include "string.h"
> +#include "stdio.h"
> +#include "page.h"
> +#include "ops.h"
> +#include "dcr.h"
> +#include "4xx.h"
> +#include "44x.h"
> +#include "cuboot.h"
> +
> +#define TARGET_4xx
> +#define TARGET_44x
> +#include "ppcboot.h"
> +
> +static bd_t bd;
> +static u8 *sequoia_mac0, *sequoia_mac1;
> +
> +extern char _dtb_start[];
> +extern char _dtb_end[];

These got added to ops.h in commit 2f1d4899321be so you don't need to
specify them here anymore.

josh