Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu: (25 commits)
  m68knommu: fix broken setting of irq_chip and handler
  m68knommu: switch to using -mcpu= flags for ColdFire targets
  m68knommu: arch/m68knommu/Kconfig whitespace cleanup
  m68knommu: create optimal separate instruction and data cache for ColdFire
  m68knommu: support ColdFire caches that do copyback and write-through
  m68knommu: support version 2 ColdFire split cache
  m68knommu: make cache push code ColdFire generic
  m68knommu: clean up ColdFire cache control code
  m68knommu: move inclusion of ColdFire v4 cache registers
  m68knommu: merge bit definitions for version 3 ColdFire cache controller
  m68knommu: create bit definitions for the version 2 ColdFire cache controller
  m68knommu: remove empty __iounmap() it is no used
  m68knommu: remove kernel_map() code, it is not used
  m68knommu: remove do_page_fault(), it is not used
  m68knommu: use user stack pointer hardware on some ColdFire cores
  m68knommu: remove command line printing DEBUG
  m68knommu: remove fasthandler interrupt code
  m68knommu: move UART addressing to part specific includes
  m68knommu: fix clock rate value reported for ColdFire 54xx parts
  m68knommu: move ColdFire CPU names into their headers
  ...
This commit is contained in:
Linus Torvalds
2011-01-18 08:05:20 -08:00
38 changed files with 732 additions and 628 deletions

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@@ -2,21 +2,22 @@
#define _M68KNOMMU_CACHEFLUSH_H
/*
* (C) Copyright 2000-2004, Greg Ungerer <gerg@snapgear.com>
* (C) Copyright 2000-2010, Greg Ungerer <gerg@snapgear.com>
*/
#include <linux/mm.h>
#include <asm/mcfsim.h>
#define flush_cache_all() __flush_cache_all()
#define flush_cache_mm(mm) do { } while (0)
#define flush_cache_dup_mm(mm) do { } while (0)
#define flush_cache_range(vma, start, end) __flush_cache_all()
#define flush_cache_range(vma, start, end) do { } while (0)
#define flush_cache_page(vma, vmaddr) do { } while (0)
#define flush_dcache_range(start,len) __flush_cache_all()
#define flush_dcache_range(start, len) __flush_dcache_all()
#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 0
#define flush_dcache_page(page) do { } while (0)
#define flush_dcache_mmap_lock(mapping) do { } while (0)
#define flush_dcache_mmap_unlock(mapping) do { } while (0)
#define flush_icache_range(start,len) __flush_cache_all()
#define flush_icache_range(start, len) __flush_icache_all()
#define flush_icache_page(vma,pg) do { } while (0)
#define flush_icache_user_range(vma,pg,adr,len) do { } while (0)
#define flush_cache_vmap(start, end) do { } while (0)
@@ -27,66 +28,52 @@
#define copy_from_user_page(vma, page, vaddr, dst, src, len) \
memcpy(dst, src, len)
void mcf_cache_push(void);
static inline void __flush_cache_all(void)
{
#if defined(CONFIG_M5407) || defined(CONFIG_M548x)
/*
* Use cpushl to push and invalidate all cache lines.
* Gas doesn't seem to know how to generate the ColdFire
* cpushl instruction... Oh well, bit stuff it for now.
*/
#ifdef CACHE_PUSH
mcf_cache_push();
#endif
#ifdef CACHE_INVALIDATE
__asm__ __volatile__ (
"nop\n\t"
"clrl %%d0\n\t"
"1:\n\t"
"movel %%d0,%%a0\n\t"
"2:\n\t"
".word 0xf468\n\t"
"addl #0x10,%%a0\n\t"
"cmpl #0x00000800,%%a0\n\t"
"blt 2b\n\t"
"addql #1,%%d0\n\t"
"cmpil #4,%%d0\n\t"
"bne 1b\n\t"
"movel #0xb6088500,%%d0\n\t"
"movec %%d0,%%CACR\n\t"
: : : "d0", "a0" );
#endif /* CONFIG_M5407 */
#if defined(CONFIG_M523x) || defined(CONFIG_M527x)
__asm__ __volatile__ (
"movel #0x81400100, %%d0\n\t"
"movel %0, %%d0\n\t"
"movec %%d0, %%CACR\n\t"
"nop\n\t"
: : : "d0" );
#endif /* CONFIG_M523x || CONFIG_M527x */
#if defined(CONFIG_M528x)
__asm__ __volatile__ (
"movel #0x81000200, %%d0\n\t"
"movec %%d0, %%CACR\n\t"
"nop\n\t"
: : : "d0" );
#endif /* CONFIG_M528x */
#if defined(CONFIG_M5206) || defined(CONFIG_M5206e) || defined(CONFIG_M5272)
__asm__ __volatile__ (
"movel #0x81000100, %%d0\n\t"
"movec %%d0, %%CACR\n\t"
"nop\n\t"
: : : "d0" );
#endif /* CONFIG_M5206 || CONFIG_M5206e || CONFIG_M5272 */
#ifdef CONFIG_M5249
__asm__ __volatile__ (
"movel #0xa1000200, %%d0\n\t"
"movec %%d0, %%CACR\n\t"
"nop\n\t"
: : : "d0" );
#endif /* CONFIG_M5249 */
#ifdef CONFIG_M532x
__asm__ __volatile__ (
"movel #0x81000200, %%d0\n\t"
"movec %%d0, %%CACR\n\t"
"nop\n\t"
: : : "d0" );
#endif /* CONFIG_M532x */
: : "i" (CACHE_INVALIDATE) : "d0" );
#endif
}
/*
* Some ColdFire parts implement separate instruction and data caches,
* on those we should just flush the appropriate cache. If we don't need
* to do any specific flushing then this will be optimized away.
*/
static inline void __flush_icache_all(void)
{
#ifdef CACHE_INVALIDATEI
__asm__ __volatile__ (
"movel %0, %%d0\n\t"
"movec %%d0, %%CACR\n\t"
"nop\n\t"
: : "i" (CACHE_INVALIDATEI) : "d0" );
#endif
}
static inline void __flush_dcache_all(void)
{
#ifdef CACHE_PUSH
mcf_cache_push();
#endif
#ifdef CACHE_INVALIDATED
__asm__ __volatile__ (
"movel %0, %%d0\n\t"
"movec %%d0, %%CACR\n\t"
"nop\n\t"
: : "i" (CACHE_INVALIDATED) : "d0" );
#else
/* Flush the wrtite buffer */
__asm__ __volatile__ ( "nop" );
#endif
}
#endif /* _M68KNOMMU_CACHEFLUSH_H */

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@@ -32,7 +32,7 @@
*/
#define MCF_MBAR 0x10000000
#define MCF_MBAR2 0x80000000
#if defined(CONFIG_M548x)
#if defined(CONFIG_M54xx)
#define MCF_IPSBAR MCF_MBAR
#elif defined(CONFIG_M520x)
#define MCF_IPSBAR 0xFC000000

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@@ -42,12 +42,16 @@
*/
#ifdef CONFIG_COLDFIRE
#ifdef CONFIG_COLDFIRE_SW_A7
/*
* This is made a little more tricky on the ColdFire. There is no
* separate kernel and user stack pointers. Need to artificially
* This is made a little more tricky on older ColdFires. There is no
* separate supervisor and user stack pointers. Need to artificially
* construct a usp in software... When doing this we need to disable
* interrupts, otherwise bad things could happen.
* interrupts, otherwise bad things will happen.
*/
.globl sw_usp
.globl sw_ksp
.macro SAVE_ALL
move #0x2700,%sr /* disable intrs */
btst #5,%sp@(2) /* from user? */
@@ -74,9 +78,7 @@
7:
.endm
.macro RESTORE_ALL
btst #5,%sp@(PT_SR) /* going user? */
bnes 8f /* no, skip */
.macro RESTORE_USER
move #0x2700,%sr /* disable intrs */
movel sw_usp,%a0 /* get usp */
movel %sp@(PT_OFF_PC),%a0@- /* copy exception program counter */
@@ -91,19 +93,22 @@
subql #8,sw_usp /* set exception */
movel sw_usp,%sp /* restore usp */
rte
8:
moveml %sp@,%d1-%d5/%a0-%a2
lea %sp@(32),%sp /* space for 8 regs */
movel %sp@+,%d0
addql #4,%sp /* orig d0 */
addl %sp@+,%sp /* stkadj */
rte
.endm
.macro RDUSP
movel sw_usp,%a2
.endm
.macro WRUSP
movel %a0,sw_usp
.endm
#else /* !CONFIG_COLDFIRE_SW_A7 */
/*
* Quick exception save, use current stack only.
* Modern ColdFire parts have separate supervisor and user stack
* pointers. Simple load and restore macros for this case.
*/
.macro SAVE_LOCAL
.macro SAVE_ALL
move #0x2700,%sr /* disable intrs */
clrl %sp@- /* stkadj */
movel %d0,%sp@- /* orig d0 */
@@ -112,7 +117,7 @@
moveml %d1-%d5/%a0-%a2,%sp@
.endm
.macro RESTORE_LOCAL
.macro RESTORE_USER
moveml %sp@,%d1-%d5/%a0-%a2
lea %sp@(32),%sp /* space for 8 regs */
movel %sp@+,%d0
@@ -121,6 +126,18 @@
rte
.endm
.macro RDUSP
/*move %usp,%a2*/
.word 0x4e6a
.endm
.macro WRUSP
/*move %a0,%usp*/
.word 0x4e60
.endm
#endif /* !CONFIG_COLDFIRE_SW_A7 */
.macro SAVE_SWITCH_STACK
lea %sp@(-24),%sp /* 6 regs */
moveml %a3-%a6/%d6-%d7,%sp@
@@ -131,14 +148,6 @@
lea %sp@(24),%sp /* 6 regs */
.endm
/*
* Software copy of the user and kernel stack pointers... Ugh...
* Need these to get around ColdFire not having separate kernel
* and user stack pointers.
*/
.globl sw_usp
.globl sw_ksp
#else /* !CONFIG_COLDFIRE */
/*
@@ -167,6 +176,6 @@
moveml %sp@+,%a3-%a6/%d6-%d7
.endm
#endif /* !CONFIG_COLDFIRE */
#endif /* !COLDFIRE_SW_A7 */
#endif /* __ASSEMBLY__ */
#endif /* __M68KNOMMU_ENTRY_H */

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@@ -37,7 +37,7 @@
#if defined(CONFIG_M5206) || defined(CONFIG_M5206e) || \
defined(CONFIG_M520x) || defined(CONFIG_M523x) || \
defined(CONFIG_M527x) || defined(CONFIG_M528x) || \
defined(CONFIG_M532x) || defined(CONFIG_M548x)
defined(CONFIG_M532x) || defined(CONFIG_M54xx)
/* These parts have GPIO organized by 8 bit ports */

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@@ -145,7 +145,6 @@ static inline void io_insl(unsigned int addr, void *buf, int len)
#define IOMAP_WRITETHROUGH 3
extern void *__ioremap(unsigned long physaddr, unsigned long size, int cacheflag);
extern void __iounmap(void *addr, unsigned long size);
static inline void *ioremap(unsigned long physaddr, unsigned long size)
{

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@@ -12,6 +12,10 @@
#define m5206sim_h
/****************************************************************************/
#define CPU_NAME "COLDFIRE(m5206)"
#define CPU_INSTR_PER_JIFFY 3
#include <asm/m52xxacr.h>
/*
* Define the 5206 SIM register set addresses.
@@ -88,6 +92,14 @@
#define MCFSIM_PADDR (MCF_MBAR + 0x1c5) /* Parallel Direction (r/w) */
#define MCFSIM_PADAT (MCF_MBAR + 0x1c9) /* Parallel Port Value (r/w) */
#if defined(CONFIG_NETtel)
#define MCFUART_BASE1 0x180 /* Base address of UART1 */
#define MCFUART_BASE2 0x140 /* Base address of UART2 */
#else
#define MCFUART_BASE1 0x140 /* Base address of UART1 */
#define MCFUART_BASE2 0x180 /* Base address of UART2 */
#endif
/*
* Define system peripheral IRQ usage.
*/
@@ -95,7 +107,7 @@
#define MCF_IRQ_PROFILER 31 /* Timer1, Level 7 */
/*
* Generic GPIO
* Generic GPIO
*/
#define MCFGPIO_PIN_MAX 8
#define MCFGPIO_IRQ_VECBASE -1

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@@ -11,6 +11,11 @@
#define m520xsim_h
/****************************************************************************/
#define CPU_NAME "COLDFIRE(m520x)"
#define CPU_INSTR_PER_JIFFY 3
#include <asm/m52xxacr.h>
/*
* Define the 520x SIM register set addresses.
*/
@@ -54,6 +59,9 @@
#define MCFSIM_SDCS0 0x000a8110 /* SDRAM Chip Select 0 Configuration */
#define MCFSIM_SDCS1 0x000a8114 /* SDRAM Chip Select 1 Configuration */
/*
* EPORT and GPIO registers.
*/
#define MCFEPORT_EPDDR 0xFC088002
#define MCFEPORT_EPDR 0xFC088004
#define MCFEPORT_EPPDR 0xFC088005
@@ -97,6 +105,7 @@
#define MCFGPIO_PCLRR_UART 0xFC0A402A
#define MCFGPIO_PCLRR_FECH 0xFC0A402B
#define MCFGPIO_PCLRR_FECL 0xFC0A402C
/*
* Generic GPIO support
*/
@@ -109,7 +118,6 @@
#define MCFGPIO_PIN_MAX 80
#define MCFGPIO_IRQ_MAX 8
#define MCFGPIO_IRQ_VECBASE MCFINT_VECBASE
/****************************************************************************/
#define MCF_GPIO_PAR_UART (0xA4036)
#define MCF_GPIO_PAR_FECI2C (0xA4033)
@@ -125,6 +133,13 @@
#define MCF_GPIO_PAR_FECI2C_PAR_SDA_URXD2 (0x02)
#define MCF_GPIO_PAR_FECI2C_PAR_SCL_UTXD2 (0x04)
/*
* UART module.
*/
#define MCFUART_BASE1 0x60000 /* Base address of UART1 */
#define MCFUART_BASE2 0x64000 /* Base address of UART2 */
#define MCFUART_BASE3 0x68000 /* Base address of UART2 */
/*
* Reset Controll Unit.
*/

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@@ -11,6 +11,10 @@
#define m523xsim_h
/****************************************************************************/
#define CPU_NAME "COLDFIRE(m523x)"
#define CPU_INSTR_PER_JIFFY 3
#include <asm/m52xxacr.h>
/*
* Define the 523x SIM register set addresses.
@@ -50,6 +54,13 @@
#define MCF_RCR_SWRESET 0x80 /* Software reset bit */
#define MCF_RCR_FRCSTOUT 0x40 /* Force external reset */
/*
* UART module.
*/
#define MCFUART_BASE1 0x200 /* Base address of UART1 */
#define MCFUART_BASE2 0x240 /* Base address of UART2 */
#define MCFUART_BASE3 0x280 /* Base address of UART3 */
#define MCFGPIO_PODR_ADDR (MCF_IPSBAR + 0x100000)
#define MCFGPIO_PODR_DATAH (MCF_IPSBAR + 0x100001)
#define MCFGPIO_PODR_DATAL (MCF_IPSBAR + 0x100002)

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@@ -11,6 +11,11 @@
#define m5249sim_h
/****************************************************************************/
#define CPU_NAME "COLDFIRE(m5249)"
#define CPU_INSTR_PER_JIFFY 3
#include <asm/m52xxacr.h>
/*
* Define the 5249 SIM register set addresses.
*/
@@ -56,6 +61,11 @@
#define MCFSIM_DACR1 0x110 /* DRAM 1 Addr and Ctrl (r/w) */
#define MCFSIM_DMR1 0x114 /* DRAM 1 Mask reg (r/w) */
/*
* UART module.
*/
#define MCFUART_BASE1 0x1c0 /* Base address of UART1 */
#define MCFUART_BASE2 0x200 /* Base address of UART2 */
/*
* Some symbol defines for the above...

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@@ -12,6 +12,11 @@
#define m5272sim_h
/****************************************************************************/
#define CPU_NAME "COLDFIRE(m5272)"
#define CPU_INSTR_PER_JIFFY 3
#include <asm/m52xxacr.h>
/*
* Define the 5272 SIM register set addresses.
*/
@@ -62,6 +67,9 @@
#define MCFSIM_DCMR1 0x5c /* DRAM 1 Mask reg (r/w) */
#define MCFSIM_DCCR1 0x63 /* DRAM 1 Control reg (r/w) */
#define MCFUART_BASE1 0x100 /* Base address of UART1 */
#define MCFUART_BASE2 0x140 /* Base address of UART2 */
#define MCFSIM_PACNT (MCF_MBAR + 0x80) /* Port A Control (r/w) */
#define MCFSIM_PADDR (MCF_MBAR + 0x84) /* Port A Direction (r/w) */
#define MCFSIM_PADAT (MCF_MBAR + 0x86) /* Port A Data (r/w) */

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@@ -11,6 +11,10 @@
#define m527xsim_h
/****************************************************************************/
#define CPU_NAME "COLDFIRE(m527x)"
#define CPU_INSTR_PER_JIFFY 3
#include <asm/m52xxacr.h>
/*
* Define the 5270/5271 SIM register set addresses.
@@ -55,6 +59,12 @@
#define MCFSIM_DMR1 0x5c /* SDRAM address mask 1 */
#endif
/*
* UART module.
*/
#define MCFUART_BASE1 0x200 /* Base address of UART1 */
#define MCFUART_BASE2 0x240 /* Base address of UART2 */
#define MCFUART_BASE3 0x280 /* Base address of UART3 */
#ifdef CONFIG_M5271
#define MCFGPIO_PODR_ADDR (MCF_IPSBAR + 0x100000)

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@@ -11,6 +11,10 @@
#define m528xsim_h
/****************************************************************************/
#define CPU_NAME "COLDFIRE(m528x)"
#define CPU_INSTR_PER_JIFFY 3
#include <asm/m52xxacr.h>
/*
* Define the 5280/5282 SIM register set addresses.
@@ -41,6 +45,13 @@
#define MCFSIM_DACR1 0x50 /* SDRAM base address 1 */
#define MCFSIM_DMR1 0x54 /* SDRAM address mask 1 */
/*
* UART module.
*/
#define MCFUART_BASE1 0x200 /* Base address of UART1 */
#define MCFUART_BASE2 0x240 /* Base address of UART2 */
#define MCFUART_BASE3 0x280 /* Base address of UART3 */
/*
* GPIO registers
*/

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@@ -0,0 +1,94 @@
/****************************************************************************/
/*
* m52xxacr.h -- ColdFire version 2 core cache support
*
* (C) Copyright 2010, Greg Ungerer <gerg@snapgear.com>
*/
/****************************************************************************/
#ifndef m52xxacr_h
#define m52xxacr_h
/****************************************************************************/
/*
* All varients of the ColdFire using version 2 cores have a similar
* cache setup. Although not absolutely identical the cache register
* definitions are compatible for all of them. Mostly they support a
* configurable cache memory that can be instruction only, data only,
* or split instruction and data. The exception is the very old version 2
* core based parts, like the 5206(e), 5249 and 5272, which are instruction
* cache only. Cache size varies from 2k up to 16k.
*/
/*
* Define the Cache Control register flags.
*/
#define CACR_CENB 0x80000000 /* Enable cache */
#define CACR_CDPI 0x10000000 /* Disable invalidation by CPUSHL */
#define CACR_CFRZ 0x08000000 /* Cache freeze mode */
#define CACR_CINV 0x01000000 /* Invalidate cache */
#define CACR_DISI 0x00800000 /* Disable instruction cache */
#define CACR_DISD 0x00400000 /* Disable data cache */
#define CACR_INVI 0x00200000 /* Invalidate instruction cache */
#define CACR_INVD 0x00100000 /* Invalidate data cache */
#define CACR_CEIB 0x00000400 /* Non-cachable instruction burst */
#define CACR_DCM 0x00000200 /* Default cache mode */
#define CACR_DBWE 0x00000100 /* Buffered write enable */
#define CACR_DWP 0x00000020 /* Write protection */
#define CACR_EUSP 0x00000010 /* Enable separate user a7 */
/*
* Define the Access Control register flags.
*/
#define ACR_BASE_POS 24 /* Address Base (upper 8 bits) */
#define ACR_MASK_POS 16 /* Address Mask (next 8 bits) */
#define ACR_ENABLE 0x00008000 /* Enable this ACR */
#define ACR_USER 0x00000000 /* Allow only user accesses */
#define ACR_SUPER 0x00002000 /* Allow supervisor access only */
#define ACR_ANY 0x00004000 /* Allow any access type */
#define ACR_CENB 0x00000000 /* Caching of region enabled */
#define ACR_CDIS 0x00000040 /* Caching of region disabled */
#define ACR_BWE 0x00000020 /* Write buffer enabled */
#define ACR_WPROTECT 0x00000004 /* Write protect region */
/*
* Set the cache controller settings we will use. On the cores that support
* a split cache configuration we allow all the combinations at Kconfig
* time. For those cores that only have an instruction cache we just set
* that as on.
*/
#if defined(CONFIG_CACHE_I)
#define CACHE_TYPE (CACR_DISD + CACR_EUSP)
#define CACHE_INVTYPEI 0
#elif defined(CONFIG_CACHE_D)
#define CACHE_TYPE (CACR_DISI + CACR_EUSP)
#define CACHE_INVTYPED 0
#elif defined(CONFIG_CACHE_BOTH)
#define CACHE_TYPE CACR_EUSP
#define CACHE_INVTYPEI CACR_INVI
#define CACHE_INVTYPED CACR_INVD
#else
/* This is the instruction cache only devices (no split cache, no eusp) */
#define CACHE_TYPE 0
#define CACHE_INVTYPEI 0
#endif
#define CACHE_INIT (CACR_CINV + CACHE_TYPE)
#define CACHE_MODE (CACR_CENB + CACHE_TYPE + CACR_DCM)
#define CACHE_INVALIDATE (CACHE_MODE + CACR_CINV)
#if defined(CACHE_INVTYPEI)
#define CACHE_INVALIDATEI (CACHE_MODE + CACR_CINV + CACHE_INVTYPEI)
#endif
#if defined(CACHE_INVTYPED)
#define CACHE_INVALIDATED (CACHE_MODE + CACR_CINV + CACHE_INVTYPED)
#endif
#define ACR0_MODE ((CONFIG_RAMBASE & 0xff000000) + \
(0x000f0000) + \
(ACR_ENABLE + ACR_ANY + ACR_CENB + ACR_BWE))
#define ACR1_MODE 0
/****************************************************************************/
#endif /* m52xxsim_h */

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@@ -14,6 +14,11 @@
#define m5307sim_h
/****************************************************************************/
#define CPU_NAME "COLDFIRE(m5307)"
#define CPU_INSTR_PER_JIFFY 3
#include <asm/m53xxacr.h>
/*
* Define the 5307 SIM register set addresses.
*/
@@ -93,6 +98,17 @@
#define MCFSIM_PADDR (MCF_MBAR + 0x244)
#define MCFSIM_PADAT (MCF_MBAR + 0x248)
/*
* UART module.
*/
#if defined(CONFIG_NETtel) || defined(CONFIG_SECUREEDGEMP3)
#define MCFUART_BASE1 0x200 /* Base address of UART1 */
#define MCFUART_BASE2 0x1c0 /* Base address of UART2 */
#else
#define MCFUART_BASE1 0x1c0 /* Base address of UART1 */
#define MCFUART_BASE2 0x200 /* Base address of UART2 */
#endif
/*
* Generic GPIO support
*/
@@ -146,32 +162,5 @@
#define MCF_IRQ_TIMER 30 /* Timer0, Level 6 */
#define MCF_IRQ_PROFILER 31 /* Timer1, Level 7 */
/*
* Define the Cache register flags.
*/
#define CACR_EC (1<<31)
#define CACR_ESB (1<<29)
#define CACR_DPI (1<<28)
#define CACR_HLCK (1<<27)
#define CACR_CINVA (1<<24)
#define CACR_DNFB (1<<10)
#define CACR_DCM_WTHRU (0<<8)
#define CACR_DCM_WBACK (1<<8)
#define CACR_DCM_OFF_PRE (2<<8)
#define CACR_DCM_OFF_IMP (3<<8)
#define CACR_DW (1<<5)
#define ACR_BASE_POS 24
#define ACR_MASK_POS 16
#define ACR_ENABLE (1<<15)
#define ACR_USER (0<<13)
#define ACR_SUPER (1<<13)
#define ACR_ANY (2<<13)
#define ACR_CM_WTHRU (0<<5)
#define ACR_CM_WBACK (1<<5)
#define ACR_CM_OFF_PRE (2<<5)
#define ACR_CM_OFF_IMP (3<<5)
#define ACR_WPROTECT (1<<2)
/****************************************************************************/
#endif /* m5307sim_h */

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@@ -9,6 +9,11 @@
#define m532xsim_h
/****************************************************************************/
#define CPU_NAME "COLDFIRE(m532x)"
#define CPU_INSTR_PER_JIFFY 3
#include <asm/m53xxacr.h>
#define MCF_REG32(x) (*(volatile unsigned long *)(x))
#define MCF_REG16(x) (*(volatile unsigned short *)(x))
#define MCF_REG08(x) (*(volatile unsigned char *)(x))
@@ -74,31 +79,11 @@
#define MCF_IRQ_PROFILER (64 + 33) /* Timer1 */
/*
* Define the Cache register flags.
* UART module.
*/
#define CACR_EC (1<<31)
#define CACR_ESB (1<<29)
#define CACR_DPI (1<<28)
#define CACR_HLCK (1<<27)
#define CACR_CINVA (1<<24)
#define CACR_DNFB (1<<10)
#define CACR_DCM_WTHRU (0<<8)
#define CACR_DCM_WBACK (1<<8)
#define CACR_DCM_OFF_PRE (2<<8)
#define CACR_DCM_OFF_IMP (3<<8)
#define CACR_DW (1<<5)
#define ACR_BASE_POS 24
#define ACR_MASK_POS 16
#define ACR_ENABLE (1<<15)
#define ACR_USER (0<<13)
#define ACR_SUPER (1<<13)
#define ACR_ANY (2<<13)
#define ACR_CM_WTHRU (0<<5)
#define ACR_CM_WBACK (1<<5)
#define ACR_CM_OFF_PRE (2<<5)
#define ACR_CM_OFF_IMP (3<<5)
#define ACR_WPROTECT (1<<2)
#define MCFUART_BASE1 0xFC060000 /* Base address of UART1 */
#define MCFUART_BASE2 0xFC064000 /* Base address of UART2 */
#define MCFUART_BASE3 0xFC068000 /* Base address of UART3 */
/*********************************************************************
*

View File

@@ -0,0 +1,101 @@
/****************************************************************************/
/*
* m53xxacr.h -- ColdFire version 3 core cache support
*
* (C) Copyright 2010, Greg Ungerer <gerg@snapgear.com>
*/
/****************************************************************************/
#ifndef m53xxacr_h
#define m53xxacr_h
/****************************************************************************/
/*
* All varients of the ColdFire using version 3 cores have a similar
* cache setup. They have a unified instruction and data cache, with
* configurable write-through or copy-back operation.
*/
/*
* Define the Cache Control register flags.
*/
#define CACR_EC 0x80000000 /* Enable cache */
#define CACR_ESB 0x20000000 /* Enable store buffer */
#define CACR_DPI 0x10000000 /* Disable invalidation by CPUSHL */
#define CACR_HLCK 0x08000000 /* Half cache lock mode */
#define CACR_CINVA 0x01000000 /* Invalidate cache */
#define CACR_DNFB 0x00000400 /* Inhibited fill buffer */
#define CACR_DCM_WT 0x00000000 /* Cacheable write-through */
#define CACR_DCM_CB 0x00000100 /* Cacheable copy-back */
#define CACR_DCM_PRE 0x00000200 /* Cache inhibited, precise */
#define CACR_DCM_IMPRE 0x00000300 /* Cache inhibited, imprecise */
#define CACR_WPROTECT 0x00000020 /* Write protect*/
#define CACR_EUSP 0x00000010 /* Eanble separate user a7 */
/*
* Define the Access Control register flags.
*/
#define ACR_BASE_POS 24 /* Address Base (upper 8 bits) */
#define ACR_MASK_POS 16 /* Address Mask (next 8 bits) */
#define ACR_ENABLE 0x00008000 /* Enable this ACR */
#define ACR_USER 0x00000000 /* Allow only user accesses */
#define ACR_SUPER 0x00002000 /* Allow supervisor access only */
#define ACR_ANY 0x00004000 /* Allow any access type */
#define ACR_CM_WT 0x00000000 /* Cacheable, write-through */
#define ACR_CM_CB 0x00000020 /* Cacheable, copy-back */
#define ACR_CM_PRE 0x00000040 /* Cache inhibited, precise */
#define ACR_CM_IMPRE 0x00000060 /* Cache inhibited, imprecise */
#define ACR_WPROTECT 0x00000004 /* Write protect region */
/*
* Define the cache type and arrangement (needed for pushes).
*/
#if defined(CONFIG_M5307)
#define CACHE_SIZE 0x2000 /* 8k of unified cache */
#define ICACHE_SIZE CACHE_SIZE
#define DCACHE_SIZE CACHE_SIZE
#elif defined(CONFIG_M532x)
#define CACHE_SIZE 0x4000 /* 32k of unified cache */
#define ICACHE_SIZE CACHE_SIZE
#define DCACHE_SIZE CACHE_SIZE
#endif
#define CACHE_LINE_SIZE 16 /* 16 byte line size */
#define CACHE_WAYS 4 /* 4 ways - set associative */
/*
* Set the cache controller settings we will use. This default in the
* CACR is cache inhibited, we use the ACR register to set cacheing
* enabled on the regions we want (eg RAM).
*/
#if defined(CONFIG_CACHE_COPYBACK)
#define CACHE_TYPE ACR_CM_CB
#define CACHE_PUSH
#else
#define CACHE_TYPE ACR_CM_WT
#endif
#ifdef CONFIG_COLDFIRE_SW_A7
#define CACHE_MODE (CACR_EC + CACR_ESB + CACR_DCM_PRE)
#else
#define CACHE_MODE (CACR_EC + CACR_ESB + CACR_DCM_PRE + CACR_EUSP)
#endif
/*
* Unified cache means we will never need to flush for coherency of
* instruction fetch. We will need to flush to maintain memory/DMA
* coherency though in all cases. And for copyback caches we will need
* to push cached data as well.
*/
#define CACHE_INIT CACR_CINVA
#define CACHE_INVALIDATE CACR_CINVA
#define CACHE_INVALIDATED CACR_CINVA
#define ACR0_MODE ((CONFIG_RAMBASE & 0xff000000) + \
(0x000f0000) + \
(ACR_ENABLE + ACR_ANY + CACHE_TYPE))
#define ACR1_MODE 0
/****************************************************************************/
#endif /* m53xxsim_h */

View File

@@ -14,6 +14,11 @@
#define m5407sim_h
/****************************************************************************/
#define CPU_NAME "COLDFIRE(m5407)"
#define CPU_INSTR_PER_JIFFY 3
#include <asm/m54xxacr.h>
/*
* Define the 5407 SIM register set addresses.
*/
@@ -73,6 +78,9 @@
#define MCFSIM_DACR1 0x110 /* DRAM 1 Addr and Ctrl (r/w) */
#define MCFSIM_DMR1 0x114 /* DRAM 1 Mask reg (r/w) */
#define MCFUART_BASE1 0x1c0 /* Base address of UART1 */
#define MCFUART_BASE2 0x200 /* Base address of UART2 */
#define MCFSIM_PADDR (MCF_MBAR + 0x244)
#define MCFSIM_PADAT (MCF_MBAR + 0x248)
@@ -117,39 +125,5 @@
#define MCF_IRQ_TIMER 30 /* Timer0, Level 6 */
#define MCF_IRQ_PROFILER 31 /* Timer1, Level 7 */
/*
* Define the Cache register flags.
*/
#define CACR_DEC 0x80000000 /* Enable data cache */
#define CACR_DWP 0x40000000 /* Data write protection */
#define CACR_DESB 0x20000000 /* Enable data store buffer */
#define CACR_DDPI 0x10000000 /* Disable CPUSHL */
#define CACR_DHCLK 0x08000000 /* Half data cache lock mode */
#define CACR_DDCM_WT 0x00000000 /* Write through cache*/
#define CACR_DDCM_CP 0x02000000 /* Copyback cache */
#define CACR_DDCM_P 0x04000000 /* No cache, precise */
#define CACR_DDCM_IMP 0x06000000 /* No cache, imprecise */
#define CACR_DCINVA 0x01000000 /* Invalidate data cache */
#define CACR_BEC 0x00080000 /* Enable branch cache */
#define CACR_BCINVA 0x00040000 /* Invalidate branch cache */
#define CACR_IEC 0x00008000 /* Enable instruction cache */
#define CACR_DNFB 0x00002000 /* Inhibited fill buffer */
#define CACR_IDPI 0x00001000 /* Disable CPUSHL */
#define CACR_IHLCK 0x00000800 /* Intruction cache half lock */
#define CACR_IDCM 0x00000400 /* Intruction cache inhibit */
#define CACR_ICINVA 0x00000100 /* Invalidate instr cache */
#define ACR_BASE_POS 24 /* Address Base */
#define ACR_MASK_POS 16 /* Address Mask */
#define ACR_ENABLE 0x00008000 /* Enable address */
#define ACR_USER 0x00000000 /* User mode access only */
#define ACR_SUPER 0x00002000 /* Supervisor mode only */
#define ACR_ANY 0x00004000 /* Match any access mode */
#define ACR_CM_WT 0x00000000 /* Write through mode */
#define ACR_CM_CP 0x00000020 /* Copyback mode */
#define ACR_CM_OFF_PRE 0x00000040 /* No cache, precise */
#define ACR_CM_OFF_IMP 0x00000060 /* No cache, imprecise */
#define ACR_WPROTECT 0x00000004 /* Write protect */
/****************************************************************************/
#endif /* m5407sim_h */

View File

@@ -0,0 +1,97 @@
/*
* Bit definitions for the MCF54xx ACR and CACR registers.
*/
#ifndef m54xxacr_h
#define m54xxacr_h
/*
* Define the Cache register flags.
*/
#define CACR_DEC 0x80000000 /* Enable data cache */
#define CACR_DWP 0x40000000 /* Data write protection */
#define CACR_DESB 0x20000000 /* Enable data store buffer */
#define CACR_DDPI 0x10000000 /* Disable invalidation by CPUSHL */
#define CACR_DHCLK 0x08000000 /* Half data cache lock mode */
#define CACR_DDCM_WT 0x00000000 /* Write through cache*/
#define CACR_DDCM_CP 0x02000000 /* Copyback cache */
#define CACR_DDCM_P 0x04000000 /* No cache, precise */
#define CACR_DDCM_IMP 0x06000000 /* No cache, imprecise */
#define CACR_DCINVA 0x01000000 /* Invalidate data cache */
#define CACR_BEC 0x00080000 /* Enable branch cache */
#define CACR_BCINVA 0x00040000 /* Invalidate branch cache */
#define CACR_IEC 0x00008000 /* Enable instruction cache */
#define CACR_DNFB 0x00002000 /* Inhibited fill buffer */
#define CACR_IDPI 0x00001000 /* Disable CPUSHL */
#define CACR_IHLCK 0x00000800 /* Intruction cache half lock */
#define CACR_IDCM 0x00000400 /* Intruction cache inhibit */
#define CACR_ICINVA 0x00000100 /* Invalidate instr cache */
#define CACR_EUSP 0x00000020 /* Enable separate user a7 */
#define ACR_BASE_POS 24 /* Address Base */
#define ACR_MASK_POS 16 /* Address Mask */
#define ACR_ENABLE 0x00008000 /* Enable address */
#define ACR_USER 0x00000000 /* User mode access only */
#define ACR_SUPER 0x00002000 /* Supervisor mode only */
#define ACR_ANY 0x00004000 /* Match any access mode */
#define ACR_CM_WT 0x00000000 /* Write through mode */
#define ACR_CM_CP 0x00000020 /* Copyback mode */
#define ACR_CM_OFF_PRE 0x00000040 /* No cache, precise */
#define ACR_CM_OFF_IMP 0x00000060 /* No cache, imprecise */
#define ACR_CM 0x00000060 /* Cache mode mask */
#define ACR_WPROTECT 0x00000004 /* Write protect */
#if defined(CONFIG_M5407)
#define ICACHE_SIZE 0x4000 /* instruction - 16k */
#define DCACHE_SIZE 0x2000 /* data - 8k */
#elif defined(CONFIG_M54xx)
#define ICACHE_SIZE 0x8000 /* instruction - 32k */
#define DCACHE_SIZE 0x8000 /* data - 32k */
#endif
#define CACHE_LINE_SIZE 0x0010 /* 16 bytes */
#define CACHE_WAYS 4 /* 4 ways */
/*
* Version 4 cores have a true harvard style separate instruction
* and data cache. Enable data and instruction caches, also enable write
* buffers and branch accelerator.
*/
/* attention : enabling CACR_DESB requires a "nop" to flush the store buffer */
/* use '+' instead of '|' for assembler's sake */
/* Enable data cache */
/* Enable data store buffer */
/* outside ACRs : No cache, precise */
/* Enable instruction+branch caches */
#if defined(CONFIG_M5407)
#define CACHE_MODE (CACR_DEC+CACR_DESB+CACR_DDCM_P+CACR_BEC+CACR_IEC)
#else
#define CACHE_MODE (CACR_DEC+CACR_DESB+CACR_DDCM_P+CACR_BEC+CACR_IEC+CACR_EUSP)
#endif
#if defined(CONFIG_CACHE_COPYBACK)
#define DATA_CACHE_MODE (ACR_ENABLE+ACR_ANY+ACR_CM_CP)
#else
#define DATA_CACHE_MODE (ACR_ENABLE+ACR_ANY+ACR_CM_WT)
#endif
#define INSN_CACHE_MODE (ACR_ENABLE+ACR_ANY)
#define CACHE_INIT (CACR_DCINVA+CACR_BCINVA+CACR_ICINVA)
#define CACHE_INVALIDATE (CACHE_MODE+CACR_DCINVA+CACR_BCINVA+CACR_ICINVA)
#define CACHE_INVALIDATEI (CACHE_MODE+CACR_BCINVA+CACR_ICINVA)
#define CACHE_INVALIDATED (CACHE_MODE+CACR_DCINVA)
#define ACR0_MODE (0x000f0000+DATA_CACHE_MODE)
#define ACR1_MODE 0
#define ACR2_MODE (0x000f0000+INSN_CACHE_MODE)
#define ACR3_MODE 0
#if ((DATA_CACHE_MODE & ACR_CM) == ACR_CM_CP)
/* Copyback cache mode must push dirty cache lines first */
#define CACHE_PUSH
#endif
#endif /* m54xxacr_h */

View File

@@ -1,13 +1,13 @@
/*
* File: m548xgpt.h
* Purpose: Register and bit definitions for the MCF548X
* File: m54xxgpt.h
* Purpose: Register and bit definitions for the MCF54XX
*
* Notes:
*
*/
#ifndef m548xgpt_h
#define m548xgpt_h
#ifndef m54xxgpt_h
#define m54xxgpt_h
/*********************************************************************
*
@@ -87,4 +87,4 @@
/********************************************************************/
#endif /* m548xgpt_h */
#endif /* m54xxgpt_h */

View File

@@ -1,11 +1,16 @@
/*
* m548xsim.h -- ColdFire 547x/548x System Integration Unit support.
* m54xxsim.h -- ColdFire 547x/548x System Integration Unit support.
*/
#ifndef m548xsim_h
#define m548xsim_h
#ifndef m54xxsim_h
#define m54xxsim_h
#define MCFINT_VECBASE 64
#define CPU_NAME "COLDFIRE(m54xx)"
#define CPU_INSTR_PER_JIFFY 2
#include <asm/m54xxacr.h>
#define MCFINT_VECBASE 64
/*
* Interrupt Controller Registers
@@ -21,6 +26,14 @@
#define MCFINTC_IACKL 0x19 /* */
#define MCFINTC_ICR0 0x40 /* Base ICR register */
/*
* UART module.
*/
#define MCFUART_BASE1 0x8600 /* Base address of UART1 */
#define MCFUART_BASE2 0x8700 /* Base address of UART2 */
#define MCFUART_BASE3 0x8800 /* Base address of UART3 */
#define MCFUART_BASE4 0x8900 /* Base address of UART4 */
/*
* Define system peripheral IRQ usage.
*/
@@ -52,4 +65,4 @@
#define MCF_PAR_PSC_RTS_RTS (0x30)
#define MCF_PAR_PSC_CANRX (0x40)
#endif /* m548xsim_h */
#endif /* m54xxsim_h */

View File

@@ -1,150 +0,0 @@
/****************************************************************************/
/*
* mcfcache.h -- ColdFire CPU cache support code
*
* (C) Copyright 2004, Greg Ungerer <gerg@snapgear.com>
*/
/****************************************************************************/
#ifndef __M68KNOMMU_MCFCACHE_H
#define __M68KNOMMU_MCFCACHE_H
/****************************************************************************/
/*
* The different ColdFire families have different cache arrangments.
* Everything from a small instruction only cache, to configurable
* data and/or instruction cache, to unified instruction/data, to
* harvard style separate instruction and data caches.
*/
#if defined(CONFIG_M5206) || defined(CONFIG_M5206e) || defined(CONFIG_M5272)
/*
* Simple version 2 core cache. These have instruction cache only,
* we just need to invalidate it and enable it.
*/
.macro CACHE_ENABLE
movel #0x01000000,%d0 /* invalidate cache cmd */
movec %d0,%CACR /* do invalidate cache */
movel #0x80000100,%d0 /* setup cache mask */
movec %d0,%CACR /* enable cache */
.endm
#endif /* CONFIG_M5206 || CONFIG_M5206e || CONFIG_M5272 */
#if defined(CONFIG_M523x) || defined(CONFIG_M527x)
/*
* New version 2 cores have a configurable split cache arrangement.
* For now I am just enabling instruction cache - but ultimately I
* think a split instruction/data cache would be better.
*/
.macro CACHE_ENABLE
movel #0x01400000,%d0
movec %d0,%CACR /* invalidate cache */
nop
movel #0x0000c000,%d0 /* set SDRAM cached only */
movec %d0,%ACR0
movel #0x00000000,%d0 /* no other regions cached */
movec %d0,%ACR1
movel #0x80400100,%d0 /* configure cache */
movec %d0,%CACR /* enable cache */
nop
.endm
#endif /* CONFIG_M523x || CONFIG_M527x */
#if defined(CONFIG_M528x)
.macro CACHE_ENABLE
nop
movel #0x01000000, %d0
movec %d0, %CACR /* Invalidate cache */
nop
movel #0x0000c020, %d0 /* Set SDRAM cached only */
movec %d0, %ACR0
movel #0x00000000, %d0 /* No other regions cached */
movec %d0, %ACR1
movel #0x80000200, %d0 /* Setup cache mask */
movec %d0, %CACR /* Enable cache */
nop
.endm
#endif /* CONFIG_M528x */
#if defined(CONFIG_M5249) || defined(CONFIG_M5307)
/*
* The version 3 core cache. Oddly enough the version 2 core 5249
* has the same SDRAM and cache setup as the version 3 cores.
* This is a single unified instruction/data cache.
*/
.macro CACHE_ENABLE
movel #0x01000000,%d0 /* invalidate whole cache */
movec %d0,%CACR
nop
#if defined(DEBUGGER_COMPATIBLE_CACHE) || defined(CONFIG_SECUREEDGEMP3)
movel #0x0000c000,%d0 /* set SDRAM cached (write-thru) */
#else
movel #0x0000c020,%d0 /* set SDRAM cached (copyback) */
#endif
movec %d0,%ACR0
movel #0x00000000,%d0 /* no other regions cached */
movec %d0,%ACR1
movel #0xa0000200,%d0 /* enable cache */
movec %d0,%CACR
nop
.endm
#endif /* CONFIG_M5249 || CONFIG_M5307 */
#if defined(CONFIG_M532x)
.macro CACHE_ENABLE
movel #0x01000000,%d0 /* invalidate cache cmd */
movec %d0,%CACR /* do invalidate cache */
nop
movel #0x4001C000,%d0 /* set SDRAM cached (write-thru) */
movec %d0,%ACR0
movel #0x00000000,%d0 /* no other regions cached */
movec %d0,%ACR1
movel #0x80000200,%d0 /* setup cache mask */
movec %d0,%CACR /* enable cache */
nop
.endm
#endif /* CONFIG_M532x */
#if defined(CONFIG_M5407) || defined(CONFIG_M548x)
/*
* Version 4 cores have a true harvard style separate instruction
* and data cache. Invalidate and enable cache, also enable write
* buffers and branch accelerator.
*/
.macro CACHE_ENABLE
movel #0x01040100,%d0 /* invalidate whole cache */
movec %d0,%CACR
nop
movel #0x000fc000,%d0 /* set SDRAM cached only */
movec %d0, %ACR0
movel #0x00000000,%d0 /* no other regions cached */
movec %d0, %ACR1
movel #0x000fc000,%d0 /* set SDRAM cached only */
movec %d0, %ACR2
movel #0x00000000,%d0 /* no other regions cached */
movec %d0, %ACR3
movel #0xb6088400,%d0 /* enable caches */
movec %d0,%CACR
nop
.endm
#endif /* CONFIG_M5407 */
#if defined(CONFIG_M520x)
.macro CACHE_ENABLE
move.l #0x01000000,%d0 /* invalidate whole cache */
movec %d0,%CACR
nop
move.l #0x0000c000,%d0 /* set SDRAM cached (write-thru) */
movec %d0,%ACR0
move.l #0x00000000,%d0 /* no other regions cached */
movec %d0,%ACR1
move.l #0x80400000,%d0 /* enable 8K instruction cache */
movec %d0,%CACR
nop
.endm
#endif /* CONFIG_M520x */
/****************************************************************************/
#endif /* __M68KNOMMU_MCFCACHE_H */

View File

@@ -41,8 +41,8 @@
#elif defined(CONFIG_M5407)
#include <asm/m5407sim.h>
#include <asm/mcfintc.h>
#elif defined(CONFIG_M548x)
#include <asm/m548xsim.h>
#elif defined(CONFIG_M54xx)
#include <asm/m54xxsim.h>
#endif
/****************************************************************************/

View File

@@ -12,49 +12,6 @@
#define mcfuart_h
/****************************************************************************/
/*
* Define the base address of the UARTS within the MBAR address
* space.
*/
#if defined(CONFIG_M5272)
#define MCFUART_BASE1 0x100 /* Base address of UART1 */
#define MCFUART_BASE2 0x140 /* Base address of UART2 */
#elif defined(CONFIG_M5206) || defined(CONFIG_M5206e)
#if defined(CONFIG_NETtel)
#define MCFUART_BASE1 0x180 /* Base address of UART1 */
#define MCFUART_BASE2 0x140 /* Base address of UART2 */
#else
#define MCFUART_BASE1 0x140 /* Base address of UART1 */
#define MCFUART_BASE2 0x180 /* Base address of UART2 */
#endif
#elif defined(CONFIG_M523x) || defined(CONFIG_M527x) || defined(CONFIG_M528x)
#define MCFUART_BASE1 0x200 /* Base address of UART1 */
#define MCFUART_BASE2 0x240 /* Base address of UART2 */
#define MCFUART_BASE3 0x280 /* Base address of UART3 */
#elif defined(CONFIG_M5249) || defined(CONFIG_M5307) || defined(CONFIG_M5407)
#if defined(CONFIG_NETtel) || defined(CONFIG_SECUREEDGEMP3)
#define MCFUART_BASE1 0x200 /* Base address of UART1 */
#define MCFUART_BASE2 0x1c0 /* Base address of UART2 */
#else
#define MCFUART_BASE1 0x1c0 /* Base address of UART1 */
#define MCFUART_BASE2 0x200 /* Base address of UART2 */
#endif
#elif defined(CONFIG_M520x)
#define MCFUART_BASE1 0x60000 /* Base address of UART1 */
#define MCFUART_BASE2 0x64000 /* Base address of UART2 */
#define MCFUART_BASE3 0x68000 /* Base address of UART2 */
#elif defined(CONFIG_M532x)
#define MCFUART_BASE1 0xfc060000 /* Base address of UART1 */
#define MCFUART_BASE2 0xfc064000 /* Base address of UART2 */
#define MCFUART_BASE3 0xfc068000 /* Base address of UART3 */
#elif defined(CONFIG_M548x)
#define MCFUART_BASE1 0x8600 /* on M548x */
#define MCFUART_BASE2 0x8700 /* on M548x */
#define MCFUART_BASE3 0x8800 /* on M548x */
#define MCFUART_BASE4 0x8900 /* on M548x */
#endif
#include <linux/serial_core.h>
#include <linux/platform_device.h>
@@ -217,7 +174,7 @@ struct mcf_platform_uart {
#define MCFUART_URF_RXS 0xc0 /* Receiver status */
#endif
#if defined(CONFIG_M548x)
#if defined(CONFIG_M54xx)
#define MCFUART_TXFIFOSIZE 512
#elif defined(CONFIG_M5272)
#define MCFUART_TXFIFOSIZE 25

View File

@@ -20,23 +20,26 @@
static inline unsigned long rdusp(void)
{
#ifdef CONFIG_COLDFIRE
#ifdef CONFIG_COLDFIRE_SW_A7
extern unsigned int sw_usp;
return sw_usp;
#else
unsigned long usp;
__asm__ __volatile__("move %/usp,%0" : "=a" (usp));
register unsigned long usp __asm__("a0");
/* move %usp,%a0 */
__asm__ __volatile__(".word 0x4e68" : "=a" (usp));
return usp;
#endif
}
static inline void wrusp(unsigned long usp)
{
#ifdef CONFIG_COLDFIRE
#ifdef CONFIG_COLDFIRE_SW_A7
extern unsigned int sw_usp;
sw_usp = usp;
#else
__asm__ __volatile__("move %0,%/usp" : : "a" (usp));
register unsigned long a0 __asm__("a0") = usp;
/* move %a0,%usp */
__asm__ __volatile__(".word 0x4e60" : : "a" (a0) );
#endif
}