Commit 3ce4aa1b authored by Andrew Morton's avatar Andrew Morton Committed by Linus Torvalds

[PATCH] PPC32: PPC44x lib support

From: Matt Porter <mporter@kernel.crashing.org>

Merge PPC44x library support against new OCP.
parent 558e7b25
......@@ -14,8 +14,10 @@ CFLAGS_btext.o += -mrelocatable-lib
obj-$(CONFIG_PPCBUG_NVRAM) += prep_nvram.o
obj-$(CONFIG_PPC_OCP) += ocp.o
obj-$(CONFIG_IBM_OCP) += ibm_ocp.o
obj-$(CONFIG_44x) += ibm44x_common.o
obj-$(CONFIG_440GP) += ibm440gp_common.o
obj-$(CONFIG_440GX) += ibm440gx_common.o
ifeq ($(CONFIG_4xx),y)
obj-$(CONFIG_4xx) += ppc4xx_pic.o
obj-$(CONFIG_40x) += ppc4xx_setup.o
......
......@@ -24,7 +24,7 @@
/*
* Calculate 440GP clocks
*/
void __init ibm440gp_get_clocks(struct ibm440gp_clocks* p,
void __init ibm440gp_get_clocks(struct ibm44x_clocks* p,
unsigned int sys_clk,
unsigned int ser_clk)
{
......@@ -68,11 +68,11 @@ void __init ibm440gp_get_clocks(struct ibm440gp_clocks* p,
if (cpc0_cr0 & 0x00400000){
/* External UART clock */
p->uart = ser_clk;
p->uart0 = p->uart1 = ser_clk;
}
else {
/* Internal UART clock */
u32 uart_div = ((cpc0_cr0 >> 16) & 0x1f) + 1;
p->uart = p->plb / uart_div;
p->uart0 = p->uart1 = p->plb / uart_div;
}
}
/*
* arch/ppc/syslib/ibm440gp_common.h
* arch/ppc/kernel/ibm440gp_common.h
*
* PPC440GP system library
*
......@@ -20,24 +20,14 @@
#include <linux/config.h>
#include <linux/init.h>
/*
* All clocks are in Hz
*/
struct ibm440gp_clocks {
unsigned int cpu; /* CPUCoreClk */
unsigned int plb; /* PLBClk */
unsigned int opb; /* OPBClk */
unsigned int ebc; /* PerClk */
unsigned int uart;
};
#include <syslib/ibm44x_common.h>
/*
* Please, refer to the Figure 13.1 in 440GP user manual
*
* if internal UART clock is used, ser_clk is ignored
*/
void ibm440gp_get_clocks(struct ibm440gp_clocks*, unsigned int sys_clk,
void ibm440gp_get_clocks(struct ibm44x_clocks*, unsigned int sys_clk,
unsigned int ser_clk) __init;
#endif /* __ASSEMBLY__ */
......
/*
* arch/ppc/kernel/ibm440gx_common.c
*
* PPC440GX system library
*
* Eugene Surovegin <eugene.surovegin@zultys.com> or <ebs@ebshome.net>
* Copyright (c) 2003 Zultys Technologies
*
* 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 <linux/config.h>
#include <linux/kernel.h>
#include <asm/ibm44x.h>
#include <asm/mmu.h>
#include <asm/processor.h>
#include <syslib/ibm440gx_common.h>
/*
* Calculate 440GX clocks
*/
static inline u32 __fix_zero(u32 v, u32 def){
return v ? v : def;
}
void __init ibm440gx_get_clocks(struct ibm44x_clocks* p, unsigned int sys_clk,
unsigned int ser_clk)
{
u32 pllc = CPR_READ(DCRN_CPR_PLLC);
u32 plld = CPR_READ(DCRN_CPR_PLLD);
u32 uart0 = SDR_READ(DCRN_SDR_UART0);
u32 uart1 = SDR_READ(DCRN_SDR_UART1);
/* Dividers */
u32 fbdv = __fix_zero((plld >> 24) & 0x1f, 32);
u32 fwdva = __fix_zero((plld >> 16) & 0xf, 16);
u32 fwdvb = __fix_zero((plld >> 8) & 7, 8);
u32 lfbdv = __fix_zero(plld & 0x3f, 64);
u32 pradv0 = __fix_zero((CPR_READ(DCRN_CPR_PRIMAD) >> 24) & 7, 8);
u32 prbdv0 = __fix_zero((CPR_READ(DCRN_CPR_PRIMBD) >> 24) & 7, 8);
u32 opbdv0 = __fix_zero((CPR_READ(DCRN_CPR_OPBD) >> 24) & 3, 4);
u32 perdv0 = __fix_zero((CPR_READ(DCRN_CPR_PERD) >> 24) & 3, 4);
/* Input clocks for primary dividers */
u32 clk_a, clk_b;
if (pllc & 0x40000000){
u32 m;
/* Feedback path */
switch ((pllc >> 24) & 7){
case 0:
/* PLLOUTx */
m = ((pllc & 0x20000000) ? fwdvb : fwdva) * lfbdv;
break;
case 1:
/* CPU */
m = fwdva * pradv0;
break;
case 5:
/* PERClk */
m = fwdvb * prbdv0 * opbdv0 * perdv0;
break;
default:
printk(KERN_EMERG "invalid PLL feedback source\n");
goto bypass;
}
m *= fbdv;
p->vco = sys_clk * m;
clk_a = p->vco / fwdva;
clk_b = p->vco / fwdvb;
}
else {
bypass:
/* Bypass system PLL */
p->vco = 0;
clk_a = clk_b = sys_clk;
}
p->cpu = clk_a / pradv0;
p->plb = clk_b / prbdv0;
p->opb = p->plb / opbdv0;
p->ebc = p->opb / perdv0;
/* UARTs clock */
if (uart0 & 0x00800000)
p->uart0 = ser_clk;
else
p->uart0 = p->plb / __fix_zero(uart0 & 0xff, 256);
if (uart1 & 0x00800000)
p->uart1 = ser_clk;
else
p->uart1 = p->plb / __fix_zero(uart1 & 0xff, 256);
}
/* Enable L2 cache (call with IRQs disabled) */
void __init ibm440gx_l2c_enable(void){
u32 r;
asm volatile ("sync" ::: "memory");
/* Disable SRAM */
mtdcr(DCRN_SRAM0_DPC, mfdcr(DCRN_SRAM0_DPC) & ~SRAM_DPC_ENABLE);
mtdcr(DCRN_SRAM0_SB0CR, mfdcr(DCRN_SRAM0_SB0CR) & ~SRAM_SBCR_BU_MASK);
mtdcr(DCRN_SRAM0_SB1CR, mfdcr(DCRN_SRAM0_SB1CR) & ~SRAM_SBCR_BU_MASK);
mtdcr(DCRN_SRAM0_SB2CR, mfdcr(DCRN_SRAM0_SB2CR) & ~SRAM_SBCR_BU_MASK);
mtdcr(DCRN_SRAM0_SB3CR, mfdcr(DCRN_SRAM0_SB3CR) & ~SRAM_SBCR_BU_MASK);
/* Enable L2_MODE without ICU/DCU */
r = mfdcr(DCRN_L2C0_CFG) & ~(L2C_CFG_ICU | L2C_CFG_DCU | L2C_CFG_SS_MASK);
r |= L2C_CFG_L2M | L2C_CFG_SS_256;
mtdcr(DCRN_L2C0_CFG, r);
mtdcr(DCRN_L2C0_ADDR, 0);
/* Hardware Clear Command */
mtdcr(DCRN_L2C0_CMD, L2C_CMD_HCC);
while (!(mfdcr(DCRN_L2C0_SR) & L2C_SR_CC)) ;
/* Clear Cache Parity and Tag Errors */
mtdcr(DCRN_L2C0_CMD, L2C_CMD_CCP | L2C_CMD_CTE);
/* Enable 64G snoop region starting at 0 */
r = mfdcr(DCRN_L2C0_SNP0) & ~(L2C_SNP_BA_MASK | L2C_SNP_SSR_MASK);
r |= L2C_SNP_SSR_32G | L2C_SNP_ESR;
mtdcr(DCRN_L2C0_SNP0, r);
r = mfdcr(DCRN_L2C0_SNP1) & ~(L2C_SNP_BA_MASK | L2C_SNP_SSR_MASK);
r |= 0x80000000 | L2C_SNP_SSR_32G | L2C_SNP_ESR;
mtdcr(DCRN_L2C0_SNP1, r);
asm volatile ("sync" ::: "memory");
/* Enable ICU/DCU ports */
r = mfdcr(DCRN_L2C0_CFG);
r &= ~(L2C_CFG_DCW_MASK | L2C_CFG_CPIM | L2C_CFG_TPIM | L2C_CFG_LIM
| L2C_CFG_PMUX_MASK | L2C_CFG_PMIM | L2C_CFG_TPEI | L2C_CFG_CPEI
| L2C_CFG_NAM | L2C_CFG_NBRM);
r |= L2C_CFG_ICU | L2C_CFG_DCU | L2C_CFG_TPC | L2C_CFG_CPC | L2C_CFG_FRAN
| L2C_CFG_SMCM;
mtdcr(DCRN_L2C0_CFG, r);
asm volatile ("sync; isync" ::: "memory");
}
/* Disable L2 cache (call with IRQs disabled) */
void __init ibm440gx_l2c_disable(void){
u32 r;
asm volatile ("sync" ::: "memory");
/* Disable L2C mode */
r = mfdcr(DCRN_L2C0_CFG) & ~(L2C_CFG_L2M | L2C_CFG_ICU | L2C_CFG_DCU);
mtdcr(DCRN_L2C0_CFG, r);
/* Enable SRAM */
mtdcr(DCRN_SRAM0_DPC, mfdcr(DCRN_SRAM0_DPC) | SRAM_DPC_ENABLE);
mtdcr(DCRN_SRAM0_SB0CR,
SRAM_SBCR_BAS0 | SRAM_SBCR_BS_64KB | SRAM_SBCR_BU_RW);
mtdcr(DCRN_SRAM0_SB1CR,
SRAM_SBCR_BAS1 | SRAM_SBCR_BS_64KB | SRAM_SBCR_BU_RW);
mtdcr(DCRN_SRAM0_SB2CR,
SRAM_SBCR_BAS2 | SRAM_SBCR_BS_64KB | SRAM_SBCR_BU_RW);
mtdcr(DCRN_SRAM0_SB3CR,
SRAM_SBCR_BAS3 | SRAM_SBCR_BS_64KB | SRAM_SBCR_BU_RW);
asm volatile ("sync; isync" ::: "memory");
}
int __init ibm440gx_get_eth_grp(void)
{
return (SDR_READ(DCRN_SDR_PFC1) & DCRN_SDR_PFC1_EPS) >> DCRN_SDR_PFC1_EPS_SHIFT;
}
void __init ibm440gx_set_eth_grp(int group)
{
SDR_WRITE(DCRN_SDR_PFC1, (SDR_READ(DCRN_SDR_PFC1) & ~DCRN_SDR_PFC1_EPS) | (group << DCRN_SDR_PFC1_EPS_SHIFT));
}
void __init ibm440gx_tah_enable(void)
{
/* Enable TAH0 and TAH1 */
SDR_WRITE(DCRN_SDR_MFR,SDR_READ(DCRN_SDR_MFR) &
~DCRN_SDR_MFR_TAH0);
SDR_WRITE(DCRN_SDR_MFR,SDR_READ(DCRN_SDR_MFR) &
~DCRN_SDR_MFR_TAH1);
}
int ibm440gx_show_cpuinfo(struct seq_file *m){
u32 l2c_cfg = mfdcr(DCRN_L2C0_CFG);
const char* s;
if (l2c_cfg & L2C_CFG_L2M){
switch (l2c_cfg & (L2C_CFG_ICU | L2C_CFG_DCU)){
case L2C_CFG_ICU: s = "I-Cache only"; break;
case L2C_CFG_DCU: s = "D-Cache only"; break;
default: s = "I-Cache/D-Cache"; break;
}
}
else
s = "disabled";
seq_printf(m, "L2-Cache\t: %s (0x%08x 0x%08x)\n", s,
l2c_cfg, mfdcr(DCRN_L2C0_SR));
return 0;
}
/*
* arch/ppc/kernel/ibm440gx_common.h
*
* PPC440GX system library
*
* Eugene Surovegin <eugene.surovegin@zultys.com> or <ebs@ebshome.net>
* Copyright (c) 2003 Zultys Technologies
*
* 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.
*
*/
#ifdef __KERNEL__
#ifndef __PPC_SYSLIB_IBM440GX_COMMON_H
#define __PPC_SYSLIB_IBM440GX_COMMON_H
#ifndef __ASSEMBLY__
#include <linux/config.h>
#include <linux/init.h>
#include <linux/seq_file.h>
#include <syslib/ibm44x_common.h>
/*
* Please, refer to the Figure 14.1 in 440GX user manual
*
* if internal UART clock is used, ser_clk is ignored
*/
void ibm440gx_get_clocks(struct ibm44x_clocks*, unsigned int sys_clk,
unsigned int ser_clk) __init;
/* Enable L2 cache */
void ibm440gx_l2c_enable(void) __init;
/* Disable L2 cache */
void ibm440gx_l2c_disable(void) __init;
/* Get Ethernet Group */
int ibm440gx_get_eth_grp(void) __init;
/* Set Ethernet Group */
void ibm440gx_set_eth_grp(int group) __init;
/* Enable TAH devices */
void ibm440gx_tah_enable(void) __init;
/* Add L2C info to /proc/cpuinfo */
int ibm440gx_show_cpuinfo(struct seq_file*);
#endif /* __ASSEMBLY__ */
#endif /* __PPC_SYSLIB_IBM440GX_COMMON_H */
#endif /* __KERNEL__ */
/*
* arch/ppc/kernel/ibm44x_common.h
*
* PPC44x system library
*
* Eugene Surovegin <eugene.surovegin@zultys.com> or <ebs@ebshome.net>
* Copyright (c) 2003 Zultys Technologies
*
* 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.
*
*/
#ifdef __KERNEL__
#ifndef __PPC_SYSLIB_IBM44x_COMMON_H
#define __PPC_SYSLIB_IBM44x_COMMON_H
#ifndef __ASSEMBLY__
/*
* All clocks are in Hz
*/
struct ibm44x_clocks {
unsigned int vco; /* VCO, 0 if system PLL is bypassed */
unsigned int cpu; /* CPUCoreClk */
unsigned int plb; /* PLBClk */
unsigned int opb; /* OPBClk */
unsigned int ebc; /* PerClk */
unsigned int uart0;
unsigned int uart1;
};
#endif /* __ASSEMBLY__ */
#endif /* __PPC_SYSLIB_IBM44x_COMMON_H */
#endif /* __KERNEL__ */
......@@ -19,25 +19,6 @@
#include <linux/config.h>
#ifndef __ASSEMBLY__
/*
* Data structure defining board information maintained by the boot
* ROM on IBM's "Ebony" evaluation board. An effort has been made to
* keep the field names consistent with the 8xx 'bd_t' board info
* structures.
*
* Ebony firmware stores MAC addresses in the F/W VPD area. The
* firmware must store the other dynamic values in NVRAM like on
* the previous 40x systems so they should be accessible if we
* really want them.
*/
typedef struct board_info {
unsigned char bi_enetaddr[2][6]; /* EMAC addresses */
unsigned int bi_opb_busfreq; /* OPB clock in Hz */
int bi_iic_fast[2]; /* Use fast i2c mode */
} bd_t;
#endif /* __ASSEMBLY__ */
#ifndef NR_BOARD_IRQS
#define NR_BOARD_IRQS 0
#endif
......@@ -87,11 +68,35 @@ typedef struct board_info {
*/
#ifdef CONFIG_440GX
/* CPRs */
#define DCRN_CPR_CONFIG_ADDR 0xc
#define DCRN_CPR_CONFIG_DATA 0xd
#define DCRN_CPR_CLKUPD 0x0020
#define DCRN_CPR_PLLC 0x0040
#define DCRN_CPR_PLLD 0x0060
#define DCRN_CPR_PRIMAD 0x0080
#define DCRN_CPR_PRIMBD 0x00a0
#define DCRN_CPR_OPBD 0x00c0
#define DCRN_CPR_PERD 0x00e0
#define DCRN_CPR_MALD 0x0100
/* CPRs read/write helper macros */
#define CPR_READ(offset) ({\
mtdcr(DCRN_CPR_CONFIG_ADDR, offset); \
mfdcr(DCRN_CPR_CONFIG_DATA);})
#define CPR_WRITE(offset, data) ({\
mtdcr(DCRN_CPR_CONFIG_ADDR, offset); \
mtdcr(DCRN_CPR_CONFIG_DATA, data);})
/* SDRs */
#define DCRN_SDR_CONFIG_ADDR 0xe
#define DCRN_SDR_CONFIG_DATA 0xf
#define DCRN_SDR_PFC0 0x4100
#define DCRN_SDR_PFC1 0x4101
#define DCRN_SDR_PFC1_EPS 0x1c000000
#define DCRN_SDR_PFC1_EPS_SHIFT 26
#define DCRN_SDR_PFC1_RMII 0x02000000
#define DCRN_SDR_MFR 0x4300
#define DCRN_SDR_MFR_TAH0 0x80000000 /* TAHOE0 Enable */
#define DCRN_SDR_MFR_TAH1 0x40000000 /* TAHOE1 Enable */
......@@ -117,6 +122,8 @@ typedef struct board_info {
#define DCRN_SDR_MFR_E3TXFH 0x00000004
#define DCRN_SDR_MFR_E3RXFL 0x00000002
#define DCRN_SDR_MFR_E3RXFH 0x00000001
#define DCRN_SDR_UART0 0x0120
#define DCRN_SDR_UART1 0x0121
/* SDR read/write helper macros */
#define SDR_READ(offset) ({\
......@@ -139,8 +146,12 @@ typedef struct board_info {
/* UIC */
#define DCRN_UIC0_BASE 0xc0
#define DCRN_UIC1_BASE 0xd0
#define DCRN_UIC2_BASE 0x210
#define DCRN_UICB_BASE 0x200
#define UIC0 DCRN_UIC0_BASE
#define UIC1 DCRN_UIC1_BASE
#define UIC2 DCRN_UIC2_BASE
#define UICB DCRN_UICB_BASE
#define DCRN_UIC_SR(base) (base + 0x0)
#define DCRN_UIC_ER(base) (base + 0x2)
......@@ -154,6 +165,10 @@ typedef struct board_info {
#define UIC0_UIC1NC 30 /* UIC1 non-critical interrupt */
#define UIC0_UIC1CR 31 /* UIC1 critical interrupt */
#define UICB_UIC0NC 0x40000000
#define UICB_UIC1NC 0x10000000
#define UICB_UIC2NC 0x04000000
/* 440GP MAL DCRs */
#define DCRN_MALCR(base) (base + 0x0) /* Configuration */
#define DCRN_MALESR(base) (base + 0x1) /* Error Status */
......@@ -327,6 +342,81 @@ typedef struct board_info {
#define PPC44x_MEM_SIZE_256M 0x10000000
#define PPC44x_MEM_SIZE_512M 0x20000000
#ifdef CONFIG_440GX
/* Internal SRAM Controller */
#define DCRN_SRAM0_SB0CR 0x020
#define DCRN_SRAM0_SB1CR 0x021
#define DCRN_SRAM0_SB2CR 0x022
#define DCRN_SRAM0_SB3CR 0x023
#define SRAM_SBCR_BAS0 0x80000000
#define SRAM_SBCR_BAS1 0x80010000
#define SRAM_SBCR_BAS2 0x80020000
#define SRAM_SBCR_BAS3 0x80030000
#define SRAM_SBCR_BU_MASK 0x00000180
#define SRAM_SBCR_BS_64KB 0x00000800
#define SRAM_SBCR_BU_RO 0x00000080
#define SRAM_SBCR_BU_RW 0x00000180
#define DCRN_SRAM0_BEAR 0x024
#define DCRN_SRAM0_BESR0 0x025
#define DCRN_SRAM0_BESR1 0x026
#define DCRN_SRAM0_PMEG 0x027
#define DCRN_SRAM0_CID 0x028
#define DCRN_SRAM0_REVID 0x029
#define DCRN_SRAM0_DPC 0x02a
#define SRAM_DPC_ENABLE 0x80000000
/* L2 Cache Controller */
#define DCRN_L2C0_CFG 0x030
#define L2C_CFG_L2M 0x80000000
#define L2C_CFG_ICU 0x40000000
#define L2C_CFG_DCU 0x20000000
#define L2C_CFG_DCW_MASK 0x1e000000
#define L2C_CFG_TPC 0x01000000
#define L2C_CFG_CPC 0x00800000
#define L2C_CFG_FRAN 0x00200000
#define L2C_CFG_SS_MASK 0x00180000
#define L2C_CFG_SS_256 0x00000000
#define L2C_CFG_CPIM 0x00040000
#define L2C_CFG_TPIM 0x00020000
#define L2C_CFG_LIM 0x00010000
#define L2C_CFG_PMUX_MASK 0x00007000
#define L2C_CFG_PMUX_SNP 0x00000000
#define L2C_CFG_PMUX_IF 0x00001000
#define L2C_CFG_PMUX_DF 0x00002000
#define L2C_CFG_PMUX_DS 0x00003000
#define L2C_CFG_PMIM 0x00000800
#define L2C_CFG_TPEI 0x00000400
#define L2C_CFG_CPEI 0x00000200
#define L2C_CFG_NAM 0x00000100
#define L2C_CFG_SMCM 0x00000080
#define L2C_CFG_NBRM 0x00000040
#define DCRN_L2C0_CMD 0x031
#define L2C_CMD_CLR 0x80000000
#define L2C_CMD_DIAG 0x40000000
#define L2C_CMD_INV 0x20000000
#define L2C_CMD_CCP 0x10000000
#define L2C_CMD_CTE 0x08000000
#define L2C_CMD_STRC 0x04000000
#define L2C_CMD_STPC 0x02000000
#define L2C_CMD_RPMC 0x01000000
#define L2C_CMD_HCC 0x00800000
#define DCRN_L2C0_ADDR 0x032
#define DCRN_L2C0_DATA 0x033
#define DCRN_L2C0_SR 0x034
#define L2C_SR_CC 0x80000000
#define L2C_SR_CPE 0x40000000
#define L2C_SR_TPE 0x20000000
#define L2C_SR_LRU 0x10000000
#define L2C_SR_PCS 0x08000000
#define DCRN_L2C0_REVID 0x035
#define DCRN_L2C0_SNP0 0x036
#define DCRN_L2C0_SNP1 0x037
#define L2C_SNP_BA_MASK 0xffff0000
#define L2C_SNP_SSR_MASK 0x0000f000
#define L2C_SNP_SSR_32G 0x0000f000
#define L2C_SNP_ESR 0x00000800
#endif /* CONFIG_440GX */
/*
* PCI-X definitions
*/
......@@ -423,7 +513,11 @@ typedef struct board_info {
#define IIC_CLOCK 50
#undef NR_UICS
#ifdef CONFIG_440GX
#define NR_UICS 3
#else
#define NR_UICS 2
#endif
#define UIC_CASCADE_MASK 0x0003 /* bits 30 & 31 */
#define BD_EMAC_ADDR(e,i) bi_enetaddr[e][i]
......
......@@ -15,6 +15,7 @@
#define __ASM_IBM4XX_H__
#include <linux/config.h>
#include <asm/types.h>
#ifdef CONFIG_40x
......@@ -22,8 +23,8 @@
#include <platforms/4xx/ash.h>
#endif
#if defined (CONFIG_CEDAR)
#include <platforms/4xx/cedar.h>
#if defined(CONFIG_BUBINGA)
#include <platforms/4xx/bubinga.h>
#endif
#if defined(CONFIG_CPCI405)
......@@ -46,17 +47,27 @@
#include <platforms/4xx/redwood5.h>
#endif
#if defined(CONFIG_REDWOOD_6)
#include <platforms/4xx/redwood6.h>
#endif
#if defined(CONFIG_SYCAMORE)
#include <platforms/4xx/sycamore.h>
#endif
#if defined(CONFIG_WALNUT)
#include <platforms/4xx/walnut.h>
#endif
#ifndef __ASSEMBLY__
#ifdef CONFIG_40x
/*
* The "residual" board information structure the boot loader passes
* into the kernel.
*/
extern bd_t __res;
#endif
void ppc4xx_setup_arch(void);
void ppc4xx_map_io(void);
......@@ -91,12 +102,14 @@ void ppc4xx_init(unsigned long r3, unsigned long r4, unsigned long r5,
#endif
#ifndef __ASSEMBLY__
#ifdef CONFIG_40x
/*
* The "residual" board information structure the boot loader passes
* into the kernel.
*/
extern bd_t __res;
#endif
#endif
#endif /* CONFIG_40x */
#endif /* __ASM_IBM4XX_H__ */
......
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