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Commit 6d8a1393 authored by Greg Ungerer's avatar Greg Ungerer
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m68knommu: use read/write IO access functions in ColdFire m532x setup code 

Get rid of the use of local IO access macros and switch to using the standard
read*/write* family of access functions for the ColdFire m532x setup code.
Signed-off-by: default avatarGreg Ungerer <gerg@uclinux.org>
parent e4c2b9be
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Showing with 139 additions and 148 deletions
arch/m68k/include/asm/m532xsim.h
View file @ 6d8a1393
......@@ -15,10 +15,6 @@
#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))
#define MCFINT_VECBASE 64
#define MCFINT_UART0 26 /* Interrupt number for UART0 */
#define MCFINT_UART1 27 /* Interrupt number for UART1 */
......@@ -38,7 +34,7 @@
#define MCF_IRQ_QSPI (MCFINT_VECBASE + MCFINT_QSPI)
#define MCF_WTM_WCR MCF_REG16(0xFC098000)
#define MCF_WTM_WCR 0xFC098000
/*
* Define the 532x SIM register set addresses.
......@@ -181,13 +177,13 @@
*********************************************************************/
/* Register read/write macros */
#define MCF_CCM_CCR MCF_REG16(0xFC0A0004)
#define MCF_CCM_RCON MCF_REG16(0xFC0A0008)
#define MCF_CCM_CIR MCF_REG16(0xFC0A000A)
#define MCF_CCM_MISCCR MCF_REG16(0xFC0A0010)
#define MCF_CCM_CDR MCF_REG16(0xFC0A0012)
#define MCF_CCM_UHCSR MCF_REG16(0xFC0A0014)
#define MCF_CCM_UOCSR MCF_REG16(0xFC0A0016)
#define MCF_CCM_CCR 0xFC0A0004
#define MCF_CCM_RCON 0xFC0A0008
#define MCF_CCM_CIR 0xFC0A000A
#define MCF_CCM_MISCCR 0xFC0A0010
#define MCF_CCM_CDR 0xFC0A0012
#define MCF_CCM_UHCSR 0xFC0A0014
#define MCF_CCM_UOCSR 0xFC0A0016
/* Bit definitions and macros for MCF_CCM_CCR */
#define MCF_CCM_CCR_RESERVED (0x0001)
......@@ -256,27 +252,24 @@
*********************************************************************/
/* Register read/write macros */
#define MCF_FBCS0_CSAR MCF_REG32(0xFC008000)
#define MCF_FBCS0_CSMR MCF_REG32(0xFC008004)
#define MCF_FBCS0_CSCR MCF_REG32(0xFC008008)
#define MCF_FBCS1_CSAR MCF_REG32(0xFC00800C)
#define MCF_FBCS1_CSMR MCF_REG32(0xFC008010)
#define MCF_FBCS1_CSCR MCF_REG32(0xFC008014)
#define MCF_FBCS2_CSAR MCF_REG32(0xFC008018)
#define MCF_FBCS2_CSMR MCF_REG32(0xFC00801C)
#define MCF_FBCS2_CSCR MCF_REG32(0xFC008020)
#define MCF_FBCS3_CSAR MCF_REG32(0xFC008024)
#define MCF_FBCS3_CSMR MCF_REG32(0xFC008028)
#define MCF_FBCS3_CSCR MCF_REG32(0xFC00802C)
#define MCF_FBCS4_CSAR MCF_REG32(0xFC008030)
#define MCF_FBCS4_CSMR MCF_REG32(0xFC008034)
#define MCF_FBCS4_CSCR MCF_REG32(0xFC008038)
#define MCF_FBCS5_CSAR MCF_REG32(0xFC00803C)
#define MCF_FBCS5_CSMR MCF_REG32(0xFC008040)
#define MCF_FBCS5_CSCR MCF_REG32(0xFC008044)
#define MCF_FBCS_CSAR(x) MCF_REG32(0xFC008000+((x)*0x00C))
#define MCF_FBCS_CSMR(x) MCF_REG32(0xFC008004+((x)*0x00C))
#define MCF_FBCS_CSCR(x) MCF_REG32(0xFC008008+((x)*0x00C))
#define MCF_FBCS0_CSAR 0xFC008000
#define MCF_FBCS0_CSMR 0xFC008004
#define MCF_FBCS0_CSCR 0xFC008008
#define MCF_FBCS1_CSAR 0xFC00800C
#define MCF_FBCS1_CSMR 0xFC008010
#define MCF_FBCS1_CSCR 0xFC008014
#define MCF_FBCS2_CSAR 0xFC008018
#define MCF_FBCS2_CSMR 0xFC00801C
#define MCF_FBCS2_CSCR 0xFC008020
#define MCF_FBCS3_CSAR 0xFC008024
#define MCF_FBCS3_CSMR 0xFC008028
#define MCF_FBCS3_CSCR 0xFC00802C
#define MCF_FBCS4_CSAR 0xFC008030
#define MCF_FBCS4_CSMR 0xFC008034
#define MCF_FBCS4_CSCR 0xFC008038
#define MCF_FBCS5_CSAR 0xFC00803C
#define MCF_FBCS5_CSMR 0xFC008040
#define MCF_FBCS5_CSCR 0xFC008044
/* Bit definitions and macros for MCF_FBCS_CSAR */
#define MCF_FBCS_CSAR_BA(x) ((x)&0xFFFF0000)
......@@ -1114,10 +1107,10 @@
*********************************************************************/
/* Register read/write macros */
#define MCF_PLL_PODR MCF_REG08(0xFC0C0000)
#define MCF_PLL_PLLCR MCF_REG08(0xFC0C0004)
#define MCF_PLL_PMDR MCF_REG08(0xFC0C0008)
#define MCF_PLL_PFDR MCF_REG08(0xFC0C000C)
#define MCF_PLL_PODR 0xFC0C0000
#define MCF_PLL_PLLCR 0xFC0C0004
#define MCF_PLL_PMDR 0xFC0C0008
#define MCF_PLL_PFDR 0xFC0C000C
/* Bit definitions and macros for MCF_PLL_PODR */
#define MCF_PLL_PODR_BUSDIV(x) (((x)&0x0F)<<0)
......@@ -1140,15 +1133,15 @@
*********************************************************************/
/* Register read/write macros */
#define MCF_SCM_MPR MCF_REG32(0xFC000000)
#define MCF_SCM_PACRA MCF_REG32(0xFC000020)
#define MCF_SCM_PACRB MCF_REG32(0xFC000024)
#define MCF_SCM_PACRC MCF_REG32(0xFC000028)
#define MCF_SCM_PACRD MCF_REG32(0xFC00002C)
#define MCF_SCM_PACRE MCF_REG32(0xFC000040)
#define MCF_SCM_PACRF MCF_REG32(0xFC000044)
#define MCF_SCM_MPR 0xFC000000
#define MCF_SCM_PACRA 0xFC000020
#define MCF_SCM_PACRB 0xFC000024
#define MCF_SCM_PACRC 0xFC000028
#define MCF_SCM_PACRD 0xFC00002C
#define MCF_SCM_PACRE 0xFC000040
#define MCF_SCM_PACRF 0xFC000044
#define MCF_SCM_BCR MCF_REG32(0xFC040024)
#define MCF_SCM_BCR 0xFC040024
/*********************************************************************
*
......@@ -1157,17 +1150,16 @@
*********************************************************************/
/* Register read/write macros */
#define MCF_SDRAMC_SDMR MCF_REG32(0xFC0B8000)
#define MCF_SDRAMC_SDCR MCF_REG32(0xFC0B8004)
#define MCF_SDRAMC_SDCFG1 MCF_REG32(0xFC0B8008)
#define MCF_SDRAMC_SDCFG2 MCF_REG32(0xFC0B800C)
#define MCF_SDRAMC_LIMP_FIX MCF_REG32(0xFC0B8080)
#define MCF_SDRAMC_SDDS MCF_REG32(0xFC0B8100)
#define MCF_SDRAMC_SDCS0 MCF_REG32(0xFC0B8110)
#define MCF_SDRAMC_SDCS1 MCF_REG32(0xFC0B8114)
#define MCF_SDRAMC_SDCS2 MCF_REG32(0xFC0B8118)
#define MCF_SDRAMC_SDCS3 MCF_REG32(0xFC0B811C)
#define MCF_SDRAMC_SDCS(x) MCF_REG32(0xFC0B8110+((x)*0x004))
#define MCF_SDRAMC_SDMR 0xFC0B8000
#define MCF_SDRAMC_SDCR 0xFC0B8004
#define MCF_SDRAMC_SDCFG1 0xFC0B8008
#define MCF_SDRAMC_SDCFG2 0xFC0B800C
#define MCF_SDRAMC_LIMP_FIX 0xFC0B8080
#define MCF_SDRAMC_SDDS 0xFC0B8100
#define MCF_SDRAMC_SDCS0 0xFC0B8110
#define MCF_SDRAMC_SDCS1 0xFC0B8114
#define MCF_SDRAMC_SDCS2 0xFC0B8118
#define MCF_SDRAMC_SDCS3 0xFC0B811C
/* Bit definitions and macros for MCF_SDRAMC_SDMR */
#define MCF_SDRAMC_SDMR_CMD (0x00010000)
......
arch/m68k/platform/coldfire/m532x.c
View file @ 6d8a1393
......@@ -304,7 +304,7 @@ asmlinkage void __init sysinit(void)
void wtm_init(void)
{
/* Disable watchdog timer */
MCF_WTM_WCR = 0;
writew(0, MCF_WTM_WCR);
}
#define MCF_SCM_BCR_GBW (0x00000100)
......@@ -313,19 +313,19 @@ void wtm_init(void)
void scm_init(void)
{
/* All masters are trusted */
MCF_SCM_MPR = 0x77777777;
writel(0x77777777, MCF_SCM_MPR);
/* Allow supervisor/user, read/write, and trusted/untrusted
access to all slaves */
MCF_SCM_PACRA = 0;
MCF_SCM_PACRB = 0;
MCF_SCM_PACRC = 0;
MCF_SCM_PACRD = 0;
MCF_SCM_PACRE = 0;
MCF_SCM_PACRF = 0;
writel(0, MCF_SCM_PACRA);
writel(0, MCF_SCM_PACRB);
writel(0, MCF_SCM_PACRC);
writel(0, MCF_SCM_PACRD);
writel(0, MCF_SCM_PACRE);
writel(0, MCF_SCM_PACRF);
/* Enable bursts */
MCF_SCM_BCR = (MCF_SCM_BCR_GBR | MCF_SCM_BCR_GBW);
writel(MCF_SCM_BCR_GBR | MCF_SCM_BCR_GBW, MCF_SCM_BCR);
}
......@@ -334,32 +334,32 @@ void fbcs_init(void)
writeb(0x3E, MCFGPIO_PAR_CS);
/* Latch chip select */
MCF_FBCS1_CSAR = 0x10080000;
writel(0x10080000, MCF_FBCS1_CSAR);
MCF_FBCS1_CSCR = 0x002A3780;
MCF_FBCS1_CSMR = (MCF_FBCS_CSMR_BAM_2M | MCF_FBCS_CSMR_V);
writel(0x002A3780, MCF_FBCS1_CSCR);
writel(MCF_FBCS_CSMR_BAM_2M | MCF_FBCS_CSMR_V, MCF_FBCS1_CSMR);
/* Initialize latch to drive signals to inactive states */
*((u16 *)(0x10080000)) = 0xFFFF;
writew(0xffff, 0x10080000);
/* External SRAM */
MCF_FBCS1_CSAR = EXT_SRAM_ADDRESS;
MCF_FBCS1_CSCR = (MCF_FBCS_CSCR_PS_16
| MCF_FBCS_CSCR_AA
| MCF_FBCS_CSCR_SBM
| MCF_FBCS_CSCR_WS(1));
MCF_FBCS1_CSMR = (MCF_FBCS_CSMR_BAM_512K
| MCF_FBCS_CSMR_V);
writel(EXT_SRAM_ADDRESS, MCF_FBCS1_CSAR);
writel(MCF_FBCS_CSCR_PS_16 |
MCF_FBCS_CSCR_AA |
MCF_FBCS_CSCR_SBM |
MCF_FBCS_CSCR_WS(1),
MCF_FBCS1_CSCR);
writel(MCF_FBCS_CSMR_BAM_512K | MCF_FBCS_CSMR_V, MCF_FBCS1_CSMR);
/* Boot Flash connected to FBCS0 */
MCF_FBCS0_CSAR = FLASH_ADDRESS;
MCF_FBCS0_CSCR = (MCF_FBCS_CSCR_PS_16
| MCF_FBCS_CSCR_BEM
| MCF_FBCS_CSCR_AA
| MCF_FBCS_CSCR_SBM
| MCF_FBCS_CSCR_WS(7));
MCF_FBCS0_CSMR = (MCF_FBCS_CSMR_BAM_32M
| MCF_FBCS_CSMR_V);
writel(FLASH_ADDRESS, MCF_FBCS0_CSAR);
writel(MCF_FBCS_CSCR_PS_16 |
MCF_FBCS_CSCR_BEM |
MCF_FBCS_CSCR_AA |
MCF_FBCS_CSCR_SBM |
MCF_FBCS_CSCR_WS(7),
MCF_FBCS0_CSCR);
writel(MCF_FBCS_CSMR_BAM_32M | MCF_FBCS_CSMR_V, MCF_FBCS0_CSMR);
}
void sdramc_init(void)
......@@ -368,86 +368,86 @@ void sdramc_init(void)
* Check to see if the SDRAM has already been initialized
* by a run control tool
*/
if (!(MCF_SDRAMC_SDCR & MCF_SDRAMC_SDCR_REF)) {
if (!(readl(MCF_SDRAMC_SDCR) & MCF_SDRAMC_SDCR_REF)) {
/* SDRAM chip select initialization */
/* Initialize SDRAM chip select */
MCF_SDRAMC_SDCS0 = (0
| MCF_SDRAMC_SDCS_BA(SDRAM_ADDRESS)
| MCF_SDRAMC_SDCS_CSSZ(MCF_SDRAMC_SDCS_CSSZ_32MBYTE));
writel(MCF_SDRAMC_SDCS_BA(SDRAM_ADDRESS) |
MCF_SDRAMC_SDCS_CSSZ(MCF_SDRAMC_SDCS_CSSZ_32MBYTE),
MCF_SDRAMC_SDCS0);
/*
* Basic configuration and initialization
*/
MCF_SDRAMC_SDCFG1 = (0
| MCF_SDRAMC_SDCFG1_SRD2RW((int)((SDRAM_CASL + 2) + 0.5 ))
| MCF_SDRAMC_SDCFG1_SWT2RD(SDRAM_TWR + 1)
| MCF_SDRAMC_SDCFG1_RDLAT((int)((SDRAM_CASL*2) + 2))
| MCF_SDRAMC_SDCFG1_ACT2RW((int)((SDRAM_TRCD ) + 0.5))
| MCF_SDRAMC_SDCFG1_PRE2ACT((int)((SDRAM_TRP ) + 0.5))
| MCF_SDRAMC_SDCFG1_REF2ACT((int)(((SDRAM_TRFC) ) + 0.5))
| MCF_SDRAMC_SDCFG1_WTLAT(3));
MCF_SDRAMC_SDCFG2 = (0
| MCF_SDRAMC_SDCFG2_BRD2PRE(SDRAM_BL/2 + 1)
| MCF_SDRAMC_SDCFG2_BWT2RW(SDRAM_BL/2 + SDRAM_TWR)
| MCF_SDRAMC_SDCFG2_BRD2WT((int)((SDRAM_CASL+SDRAM_BL/2-1.0)+0.5))
| MCF_SDRAMC_SDCFG2_BL(SDRAM_BL-1));
writel(MCF_SDRAMC_SDCFG1_SRD2RW((int)((SDRAM_CASL + 2) + 0.5)) |
MCF_SDRAMC_SDCFG1_SWT2RD(SDRAM_TWR + 1) |
MCF_SDRAMC_SDCFG1_RDLAT((int)((SDRAM_CASL * 2) + 2)) |
MCF_SDRAMC_SDCFG1_ACT2RW((int)(SDRAM_TRCD + 0.5)) |
MCF_SDRAMC_SDCFG1_PRE2ACT((int)(SDRAM_TRP + 0.5)) |
MCF_SDRAMC_SDCFG1_REF2ACT((int)(SDRAM_TRFC + 0.5)) |
MCF_SDRAMC_SDCFG1_WTLAT(3),
MCF_SDRAMC_SDCFG1);
writel(MCF_SDRAMC_SDCFG2_BRD2PRE(SDRAM_BL / 2 + 1) |
MCF_SDRAMC_SDCFG2_BWT2RW(SDRAM_BL / 2 + SDRAM_TWR) |
MCF_SDRAMC_SDCFG2_BRD2WT((int)((SDRAM_CASL + SDRAM_BL / 2 - 1.0) + 0.5)) |
MCF_SDRAMC_SDCFG2_BL(SDRAM_BL - 1),
MCF_SDRAMC_SDCFG2);
/*
* Precharge and enable write to SDMR
*/
MCF_SDRAMC_SDCR = (0
| MCF_SDRAMC_SDCR_MODE_EN
| MCF_SDRAMC_SDCR_CKE
| MCF_SDRAMC_SDCR_DDR
| MCF_SDRAMC_SDCR_MUX(1)
| MCF_SDRAMC_SDCR_RCNT((int)(((SDRAM_TREFI/(SYSTEM_PERIOD*64)) - 1) + 0.5))
| MCF_SDRAMC_SDCR_PS_16
| MCF_SDRAMC_SDCR_IPALL);
writel(MCF_SDRAMC_SDCR_MODE_EN |
MCF_SDRAMC_SDCR_CKE |
MCF_SDRAMC_SDCR_DDR |
MCF_SDRAMC_SDCR_MUX(1) |
MCF_SDRAMC_SDCR_RCNT((int)(((SDRAM_TREFI / (SYSTEM_PERIOD * 64)) - 1) + 0.5)) |
MCF_SDRAMC_SDCR_PS_16 |
MCF_SDRAMC_SDCR_IPALL,
MCF_SDRAMC_SDCR);
/*
* Write extended mode register
*/
MCF_SDRAMC_SDMR = (0
| MCF_SDRAMC_SDMR_BNKAD_LEMR
| MCF_SDRAMC_SDMR_AD(0x0)
| MCF_SDRAMC_SDMR_CMD);
writel(MCF_SDRAMC_SDMR_BNKAD_LEMR |
MCF_SDRAMC_SDMR_AD(0x0) |
MCF_SDRAMC_SDMR_CMD,
MCF_SDRAMC_SDMR);
/*
* Write mode register and reset DLL
*/
MCF_SDRAMC_SDMR = (0
| MCF_SDRAMC_SDMR_BNKAD_LMR
| MCF_SDRAMC_SDMR_AD(0x163)
| MCF_SDRAMC_SDMR_CMD);
writel(MCF_SDRAMC_SDMR_BNKAD_LMR |
MCF_SDRAMC_SDMR_AD(0x163) |
MCF_SDRAMC_SDMR_CMD,
MCF_SDRAMC_SDMR);
/*
* Execute a PALL command
*/
MCF_SDRAMC_SDCR |= MCF_SDRAMC_SDCR_IPALL;
writel(readl(MCF_SDRAMC_SDCR) | MCF_SDRAMC_SDCR_IPALL, MCF_SDRAMC_SDCR);
/*
* Perform two REF cycles
*/
MCF_SDRAMC_SDCR |= MCF_SDRAMC_SDCR_IREF;
MCF_SDRAMC_SDCR |= MCF_SDRAMC_SDCR_IREF;
writel(readl(MCF_SDRAMC_SDCR) | MCF_SDRAMC_SDCR_IREF, MCF_SDRAMC_SDCR);
writel(readl(MCF_SDRAMC_SDCR) | MCF_SDRAMC_SDCR_IREF, MCF_SDRAMC_SDCR);
/*
* Write mode register and clear reset DLL
*/
MCF_SDRAMC_SDMR = (0
| MCF_SDRAMC_SDMR_BNKAD_LMR
| MCF_SDRAMC_SDMR_AD(0x063)
| MCF_SDRAMC_SDMR_CMD);
writel(MCF_SDRAMC_SDMR_BNKAD_LMR |
MCF_SDRAMC_SDMR_AD(0x063) |
MCF_SDRAMC_SDMR_CMD,
MCF_SDRAMC_SDMR);
/*
* Enable auto refresh and lock SDMR
*/
MCF_SDRAMC_SDCR &= ~MCF_SDRAMC_SDCR_MODE_EN;
MCF_SDRAMC_SDCR |= (0
| MCF_SDRAMC_SDCR_REF
| MCF_SDRAMC_SDCR_DQS_OE(0xC));
writel(readl(MCF_SDRAMC_SDCR) & ~MCF_SDRAMC_SDCR_MODE_EN,
MCF_SDRAMC_SDCR);
writel(MCF_SDRAMC_SDCR_REF | MCF_SDRAMC_SDCR_DQS_OE(0xC),
MCF_SDRAMC_SDCR);
}
}
......@@ -475,7 +475,7 @@ int clock_pll(int fsys, int flags)
if (fsys == 0) {
/* Return current PLL output */
mfd = MCF_PLL_PFDR;
mfd = readb(MCF_PLL_PFDR);
return (fref * mfd / (BUSDIV * 4));
}
......@@ -501,9 +501,10 @@ int clock_pll(int fsys, int flags)
* If it has then the SDRAM needs to be put into self refresh
* mode before reprogramming the PLL.
*/
if (MCF_SDRAMC_SDCR & MCF_SDRAMC_SDCR_REF)
if (readl(MCF_SDRAMC_SDCR) & MCF_SDRAMC_SDCR_REF)
/* Put SDRAM into self refresh mode */
MCF_SDRAMC_SDCR &= ~MCF_SDRAMC_SDCR_CKE;
writel(readl(MCF_SDRAMC_SDCR) & ~MCF_SDRAMC_SDCR_CKE,
MCF_SDRAMC_SDCR);
/*
* Initialize the PLL to generate the new system clock frequency.
......@@ -514,11 +515,10 @@ int clock_pll(int fsys, int flags)
clock_limp(DEFAULT_LPD);
/* Reprogram PLL for desired fsys */
MCF_PLL_PODR = (0
| MCF_PLL_PODR_CPUDIV(BUSDIV/3)
| MCF_PLL_PODR_BUSDIV(BUSDIV));
writeb(MCF_PLL_PODR_CPUDIV(BUSDIV/3) | MCF_PLL_PODR_BUSDIV(BUSDIV),
MCF_PLL_PODR);
MCF_PLL_PFDR = mfd;
writeb(mfd, MCF_PLL_PFDR);
/* Exit LIMP mode */
clock_exit_limp();
......@@ -526,12 +526,13 @@ int clock_pll(int fsys, int flags)
/*
* Return the SDRAM to normal operation if it is in use.
*/
if (MCF_SDRAMC_SDCR & MCF_SDRAMC_SDCR_REF)
if (readl(MCF_SDRAMC_SDCR) & MCF_SDRAMC_SDCR_REF)
/* Exit self refresh mode */
MCF_SDRAMC_SDCR |= MCF_SDRAMC_SDCR_CKE;
writel(readl(MCF_SDRAMC_SDCR) | MCF_SDRAMC_SDCR_CKE,
MCF_SDRAMC_SDCR);
/* Errata - workaround for SDRAM opeartion after exiting LIMP mode */
MCF_SDRAMC_LIMP_FIX = MCF_SDRAMC_REFRESH;
writel(MCF_SDRAMC_REFRESH, MCF_SDRAMC_LIMP_FIX);
/* wait for DQS logic to relock */
for (i = 0; i < 0x200; i++)
......@@ -552,14 +553,12 @@ int clock_limp(int div)
/* Save of the current value of the SSIDIV so we don't
overwrite the value*/
temp = (MCF_CCM_CDR & MCF_CCM_CDR_SSIDIV(0xF));
temp = readw(MCF_CCM_CDR) & MCF_CCM_CDR_SSIDIV(0xF);
/* Apply the divider to the system clock */
MCF_CCM_CDR = ( 0
| MCF_CCM_CDR_LPDIV(div)
| MCF_CCM_CDR_SSIDIV(temp));
writew(MCF_CCM_CDR_LPDIV(div) | MCF_CCM_CDR_SSIDIV(temp), MCF_CCM_CDR);
MCF_CCM_MISCCR |= MCF_CCM_MISCCR_LIMP;
writew(readw(MCF_CCM_MISCCR) | MCF_CCM_MISCCR_LIMP, MCF_CCM_MISCCR);
return (FREF/(3*(1 << div)));
}
......@@ -569,10 +568,10 @@ int clock_exit_limp(void)
int fout;
/* Exit LIMP mode */
MCF_CCM_MISCCR = (MCF_CCM_MISCCR & ~ MCF_CCM_MISCCR_LIMP);
writew(readw(MCF_CCM_MISCCR) & ~MCF_CCM_MISCCR_LIMP, MCF_CCM_MISCCR);
/* Wait for PLL to lock */
while (!(MCF_CCM_MISCCR & MCF_CCM_MISCCR_PLL_LOCK))
while (!(readw(MCF_CCM_MISCCR) & MCF_CCM_MISCCR_PLL_LOCK))
;
fout = get_sys_clock();
......@@ -585,10 +584,10 @@ int get_sys_clock(void)
int divider;
/* Test to see if device is in LIMP mode */
if (MCF_CCM_MISCCR & MCF_CCM_MISCCR_LIMP) {
divider = MCF_CCM_CDR & MCF_CCM_CDR_LPDIV(0xF);
if (readw(MCF_CCM_MISCCR) & MCF_CCM_MISCCR_LIMP) {
divider = readw(MCF_CCM_CDR) & MCF_CCM_CDR_LPDIV(0xF);
return (FREF/(2 << divider));
}
else
return ((FREF * MCF_PLL_PFDR) / (BUSDIV * 4));
return (FREF * readb(MCF_PLL_PFDR)) / (BUSDIV * 4);
}
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