[PATCH 3/4] PowerPC 440EPx: Sequoia bootwrapper
Jerone Young
jyoung5 at us.ibm.com
Thu Aug 16 03:37:45 EST 2007
What source tree patch based on? The latest kernel.org git tree does not
have arch/powerpc/boot/4xx.c or arch/powerpc/boot/4xx.h . This patch is
attempting to patch these files.
On Tue, 2007-08-14 at 22:53 +0400, Valentine Barshak wrote:
> Bootwrapper code for AMCC 440EPx Sequoia board.
> The DDR2 Denali controller support has been moved to
> arch/powerpc/boot/4xx.c
> The code also uses 440EP clocking fixups
> initially provided for 440EP Bamboo.
>
> Signed-off-by: Valentine Barshak <vbarshak at ru.mvista.com>
> ---
> arch/powerpc/boot/44x.h | 1
> arch/powerpc/boot/4xx.c | 108 +++++++++++++++++++++++++++++++++++++
> arch/powerpc/boot/4xx.h | 1
> arch/powerpc/boot/Makefile | 6 +-
> arch/powerpc/boot/cuboot-sequoia.c | 31 ++++++++++
> arch/powerpc/boot/sequoia.c | 48 ++++++++++++++++
> 6 files changed, 193 insertions(+), 2 deletions(-)
>
> diff -ruN linux-2.6.orig/arch/powerpc/boot/44x.h linux-2.6/arch/powerpc/boot/44x.h
> --- linux-2.6.orig/arch/powerpc/boot/44x.h 2007-08-14 17:11:16.000000000 +0400
> +++ linux-2.6/arch/powerpc/boot/44x.h 2007-08-14 17:25:37.000000000 +0400
> @@ -12,5 +12,6 @@
>
> void ebony_init(void *mac0, void *mac1);
> void bamboo_init(void);
> +void sequoia_init(void *mac0, void *mac1);
>
> #endif /* _PPC_BOOT_44X_H_ */
> diff -ruN linux-2.6.orig/arch/powerpc/boot/4xx.c linux-2.6/arch/powerpc/boot/4xx.c
> --- linux-2.6.orig/arch/powerpc/boot/4xx.c 2007-08-14 17:11:16.000000000 +0400
> +++ linux-2.6/arch/powerpc/boot/4xx.c 2007-08-14 20:16:57.000000000 +0400
> @@ -39,6 +39,114 @@
> dt_fixup_memory(0, memsize);
> }
>
> +/* 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))
> +
> +static inline u32 mfdcr_sdram0(u32 reg)
> +{
> + mtdcr(DCRN_SDRAM0_CFGADDR, reg);
> + return mfdcr(DCRN_SDRAM0_CFGDATA);
> +}
> +
> +void ibm4xx_denali_fixup_memsize(void)
> +{
> + u32 val, max_cs, max_col, max_row;
> + u32 cs, col, row, bank, dpath;
> + unsigned long memsize;
> +
> + val = mfdcr_sdram0(DDR0_02);
> + if (!DDR_GET_VAL(val, DDR_START, DDR_START_SHIFT))
> + fatal("DDR controller is not initialized\n");
> +
> + /* get maximum cs col and row values */
> + max_cs = DDR_GET_VAL(val, DDR_MAX_CS_REG, DDR_MAX_CS_REG_SHIFT);
> + max_col = DDR_GET_VAL(val, DDR_MAX_COL_REG, DDR_MAX_COL_REG_SHIFT);
> + max_row = DDR_GET_VAL(val, DDR_MAX_ROW_REG, DDR_MAX_ROW_REG_SHIFT);
> +
> + /* get CS value */
> + val = mfdcr_sdram0(DDR0_10);
> +
> + val = DDR_GET_VAL(val, DDR_CS_MAP, DDR_CS_MAP_SHIFT);
> + cs = 0;
> + while (val) {
> + if (val && 0x1)
> + cs++;
> + val = val >> 1;
> + }
> +
> + if (!cs)
> + fatal("No memory installed\n");
> + if (cs > max_cs)
> + fatal("DDR wrong CS configuration\n");
> +
> + /* get data path bytes */
> + val = mfdcr_sdram0(DDR0_14);
> +
> + if (DDR_GET_VAL(val, DDR_REDUC, DDR_REDUC_SHIFT))
> + dpath = 8; /* 64 bits */
> + else
> + dpath = 4; /* 32 bits */
> +
> + /* get adress pins (rows) */
> + val = mfdcr_sdram0(DDR0_42);
> +
> + row = DDR_GET_VAL(val, DDR_APIN, DDR_APIN_SHIFT);
> + if (row > max_row)
> + fatal("DDR wrong APIN configuration\n");
> + row = max_row - row;
> +
> + /* get collomn size and banks */
> + val = mfdcr_sdram0(DDR0_43);
> +
> + col = DDR_GET_VAL(val, DDR_COL_SZ, DDR_COL_SZ_SHIFT);
> + if (col > max_col)
> + fatal("DDR wrong COL configuration\n");
> + col = max_col - col;
> +
> + if (DDR_GET_VAL(val, DDR_BANK8, DDR_BANK8_SHIFT))
> + bank = 8; /* 8 banks */
> + else
> + bank = 4; /* 4 banks */
> +
> + memsize = cs * (1 << (col+row)) * bank * dpath;
> + dt_fixup_memory(0, memsize);
> +}
> +
> #define DBCR0_RST_SYSTEM 0x30000000
>
> void ibm44x_dbcr_reset(void)
> 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 2007-08-14 17:11:16.000000000 +0400
> +++ linux-2.6/arch/powerpc/boot/4xx.h 2007-08-14 20:24:22.000000000 +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 2007-08-14 17:25:37.000000000 +0400
> @@ -0,0 +1,31 @@
> +/*
> + * Old U-boot compatibility for Sequoia
> + *
> + * Based on Ebony code by David Gibson <david at gibson.dropbear.id.au>
> + *
> + * Copyright 2007 David Gibson, IBM Corporatio.
> + * Based on cuboot-83xx.c, which is:
> + * Copyright (c) 2007 Freescale Semiconductor, Inc.
> + *
> + * 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 "ops.h"
> +#include "stdio.h"
> +#include "44x.h"
> +#include "cuboot.h"
> +
> +#define TARGET_4xx
> +#define TARGET_44x
> +#include "ppcboot.h"
> +
> +static bd_t bd;
> +
> +void platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
> + unsigned long r6, unsigned long r7)
> +{
> + CUBOOT_INIT();
> + sequoia_init(&bd.bi_enetaddr, &bd.bi_enet1addr);
> +}
> diff -ruN linux-2.6.orig/arch/powerpc/boot/Makefile linux-2.6/arch/powerpc/boot/Makefile
> --- linux-2.6.orig/arch/powerpc/boot/Makefile 2007-08-14 17:11:16.000000000 +0400
> +++ linux-2.6/arch/powerpc/boot/Makefile 2007-08-14 17:25:38.000000000 +0400
> @@ -44,10 +44,11 @@
> src-wlib := string.S crt0.S stdio.c main.c flatdevtree.c flatdevtree_misc.c \
> ns16550.c serial.c simple_alloc.c div64.S util.S \
> gunzip_util.c elf_util.c $(zlib) devtree.c oflib.c ofconsole.c \
> - 4xx.c ebony.c mv64x60.c mpsc.c mv64x60_i2c.c cuboot.c bamboo.c
> + 4xx.c ebony.c mv64x60.c mpsc.c mv64x60_i2c.c cuboot.c bamboo.c \
> + sequoia.c
> src-plat := of.c cuboot-83xx.c cuboot-85xx.c holly.c \
> cuboot-ebony.c treeboot-ebony.c prpmc2800.c \
> - ps3-head.S ps3-hvcall.S ps3.c treeboot-bamboo.c
> + ps3-head.S ps3-hvcall.S ps3.c treeboot-bamboo.c cuboot-sequoia.c
> src-boot := $(src-wlib) $(src-plat) empty.c
>
> src-boot := $(addprefix $(obj)/, $(src-boot))
> @@ -143,6 +144,7 @@
> image-$(CONFIG_PPC_85xx) += cuImage.85xx
> image-$(CONFIG_EBONY) += treeImage.ebony cuImage.ebony
> image-$(CONFIG_BAMBOO) += treeImage.bamboo
> +image-$(CONFIG_SEQUOIA) += cuImage.sequoia
> endif
>
> # For 32-bit powermacs, build the COFF and miboot images
> diff -ruN linux-2.6.orig/arch/powerpc/boot/sequoia.c linux-2.6/arch/powerpc/boot/sequoia.c
> --- linux-2.6.orig/arch/powerpc/boot/sequoia.c 1970-01-01 03:00:00.000000000 +0300
> +++ linux-2.6/arch/powerpc/boot/sequoia.c 2007-08-14 20:52:10.000000000 +0400
> @@ -0,0 +1,48 @@
> +/*
> + * Valentine Barshak <vbarshak at ru.mvista.com>
> + * Copyright 2007 MontaVista Software, Inc
> + *
> + * Based on Bamboo code by Josh Boyer <jwboyer at linux.vnet.ibm.com>
> + * Copyright IBM Corporation, 2007
> + *
> + * 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; version 2 of the License
> + */
> +#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"
> +
> +extern char _dtb_start[];
> +extern char _dtb_end[];
> +
> +static u8 *sequoia_mac0, *sequoia_mac1;
> +
> +
> +static void sequoia_fixups(void)
> +{
> + unsigned long sysclk = 33333333;
> +
> + ibm440ep_fixup_clocks(sysclk, 11059200);
> + ibm4xx_fixup_ebc_ranges("/plb/opb/ebc");
> + ibm4xx_denali_fixup_memsize();
> + dt_fixup_mac_addresses(sequoia_mac0, sequoia_mac1);
> +}
> +
> +void sequoia_init(void *mac0, void *mac1)
> +{
> + platform_ops.fixups = sequoia_fixups;
> + platform_ops.exit = ibm44x_dbcr_reset;
> + sequoia_mac0 = mac0;
> + sequoia_mac1 = mac1;
> + ft_init(_dtb_start, 0, 32);
> + serial_console_init();
> +}
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