From: Valentine Barshak Date: Wed, 29 Aug 2007 13:38:30 +0000 (+0400) Subject: [POWERPC] PowerPC 440EPx: Sequoia bootwrapper X-Git-Tag: v2.6.24-rc1~1450^2~293 X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=606d08bcd674073e0e505cb1eb4ff1516c3b498a;p=linux-2.6 [POWERPC] PowerPC 440EPx: Sequoia bootwrapper Bootwrapper code for AMCC PPC440EPx Sequoia. Signed-off-by: Valentine Barshak Acked-by: David Gibson Signed-off-by: Josh Boyer --- diff --git a/arch/powerpc/boot/4xx.c b/arch/powerpc/boot/4xx.c index 642d8780bb..ebf9e21761 100644 --- a/arch/powerpc/boot/4xx.c +++ b/arch/powerpc/boot/4xx.c @@ -39,6 +39,114 @@ void ibm4xx_fixup_memsize(void) 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 SPRN_DBCR0_40X 0x3F2 #define SPRN_DBCR0_44X 0x134 #define DBCR0_RST_SYSTEM 0x30000000 diff --git a/arch/powerpc/boot/4xx.h b/arch/powerpc/boot/4xx.h index 8f26e480dc..adba6a599a 100644 --- a/arch/powerpc/boot/4xx.h +++ b/arch/powerpc/boot/4xx.h @@ -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 --git a/arch/powerpc/boot/Makefile b/arch/powerpc/boot/Makefile index cd7c05769e..2766069e6a 100644 --- a/arch/powerpc/boot/Makefile +++ b/arch/powerpc/boot/Makefile @@ -48,7 +48,8 @@ src-wlib := string.S crt0.S stdio.c main.c flatdevtree.c flatdevtree_misc.c \ cpm-serial.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 cuboot-8xx.c cuboot-pq2.c + ps3-head.S ps3-hvcall.S ps3.c treeboot-bamboo.c cuboot-8xx.c \ + cuboot-pq2.c cuboot-sequoia.c src-boot := $(src-wlib) $(src-plat) empty.c src-boot := $(addprefix $(obj)/, $(src-boot)) @@ -146,6 +147,7 @@ image-$(CONFIG_PPC_83xx) += cuImage.83xx 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 --git a/arch/powerpc/boot/cuboot-sequoia.c b/arch/powerpc/boot/cuboot-sequoia.c new file mode 100644 index 0000000000..ec635e0bd4 --- /dev/null +++ b/arch/powerpc/boot/cuboot-sequoia.c @@ -0,0 +1,56 @@ +/* + * Old U-boot compatibility for Sequoia + * + * Valentine Barshak + * Copyright 2007 MontaVista Software, Inc + * + * Based on Ebony code by David Gibson + * Copyright IBM Corporation, 2007 + * + * Based on Bamboo code by Josh Boyer + * 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 +#include +#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 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(&bd.bi_enetaddr, &bd.bi_enet1addr); +} + +void platform_init(unsigned long r3, unsigned long r4, unsigned long r5, + unsigned long r6, unsigned long r7) +{ + CUBOOT_INIT(); + platform_ops.fixups = sequoia_fixups; + platform_ops.exit = ibm44x_dbcr_reset; + ft_init(_dtb_start, 0, 32); + serial_console_init(); +}