--- /dev/null
+/*
+ * (C) Copyright 2004
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <mpc8xx.h>
+#include <ppc_asm.tmpl>
+#include <asm/cache.h>
+
+#define CACHE_CMD_ENABLE 0x02000000
+#define CACHE_CMD_DISABLE 0x04000000
+#define CACHE_CMD_LOAD_LOCK 0x06000000
+#define CACHE_CMD_UNLOCK_LINE 0x08000000
+#define CACHE_CMD_UNLOCK_ALL 0x0A000000
+#define CACHE_CMD_INVALIDATE 0x0C000000
+#define SPEED_PLPRCR_WAIT_5CYC 150
+#define _CACHE_ALIGN_SIZE 16
+
+
+ .text
+ .align 2
+ .globl plprcr_write_866
+
+/*
+ * void plprcr_write_866 (long plprcr)
+ * Write PLPRCR, including workaround for device errata SIU4 and SIU9.
+ */
+
+plprcr_write_866:
+ mfspr r10, LR /* save the Link Register value */
+
+ /* turn instruction cache on (no MMU required for instructions)
+ */
+ lis r4, CACHE_CMD_ENABLE@h
+ ori r4, r4, CACHE_CMD_ENABLE@l
+ mtspr IC_CST, r4
+ isync
+
+ /* clear IC_CST error bits
+ */
+ mfspr r4, IC_CST
+
+ bl plprcr_here
+
+plprcr_here:
+ mflr r5
+
+ /* calculate relocation offset
+ */
+ lis r4, plprcr_here@h
+ ori r4, r4, plprcr_here@l
+ sub r5, r5, r4
+
+ /* calculate first address of this function
+ */
+ lis r6, plprcr_write_866@h
+ ori r6, r6, plprcr_write_866@l
+ add r6, r6, r5
+
+ /* calculate end address of this function
+ */
+ lis r7, plprcr_end@h
+ ori r7, r7, plprcr_end@l
+ add r7, r7, r5
+
+ /* load and lock code addresses
+ */
+ mr r5, r6
+
+plprcr_loop:
+ mtspr IC_ADR, r5
+ addi r5, r5, _CACHE_ALIGN_SIZE /* increment by one line */
+
+ lis r4, CACHE_CMD_LOAD_LOCK@h
+ ori r4, r4, CACHE_CMD_LOAD_LOCK@l
+ mtspr IC_CST, r4
+ isync
+
+ cmpw r5, r7
+ blt plprcr_loop
+
+ /* IC_CST error bits not evaluated
+ */
+
+ /* switch PLPRCR
+ */
+ mfspr r4, IMMR /* read IMMR */
+ rlwinm r4, r4, 0, 0, 15 /* only high 16 bits count */
+
+ /* write sequence according to MPC866 Errata
+ */
+ stw r3, PLPRCR(r4)
+ isync
+
+ lis r3, SPEED_PLPRCR_WAIT_5CYC@h
+ ori r3, r3, SPEED_PLPRCR_WAIT_5CYC@l
+
+plprcr_wait:
+ cmpwi r3, 0
+ beq plprcr_wait_end
+ nop
+ subi r3, r3, 1
+ b plprcr_wait
+
+plprcr_wait_end:
+
+ /* turn instruction cache off
+ */
+ lis r4, CACHE_CMD_UNLOCK_ALL@h
+ ori r4, r4, CACHE_CMD_UNLOCK_ALL@l
+ mtspr IC_CST, r4
+ isync
+
+ lis r4, CACHE_CMD_INVALIDATE@h
+ ori r4, r4, CACHE_CMD_INVALIDATE@l
+ mtspr IC_CST, r4
+ isync
+
+ lis r4, CACHE_CMD_DISABLE@h
+ ori r4, r4, CACHE_CMD_DISABLE@l
+ mtspr IC_CST, r4
+ isync
+
+ mtspr LR, r10 /* restore original Link Register value */
+ blr
+
+plprcr_end:
#include <mpc8xx.h>
#include <asm/processor.h>
+#ifndef CONFIG_TQM866M
+
#define PITC_SHIFT 16
#define PITR_SHIFT 16
/* pitc values to time for 58/8192 seconds (about 70.8 milliseconds) */
return (0);
}
+#else /* CONFIG_MPC866_et_al */
+
+static long init_pll_866 (long clk);
+
+/* This function sets up PLL (init_pll_866() is called) and
+ * fills gd->cpu_clk and gd->bus_clk according to the environment
+ * variable 'cpuclk' or to CFG_866_CPUCLK_DEFAULT (if 'cpuclk'
+ * contains invalid value).
+ * This functions requires an MPC866 series CPU.
+ */
+int get_clocks_866 (void)
+{
+ DECLARE_GLOBAL_DATA_PTR;
+
+ volatile immap_t *immr = (immap_t *) CFG_IMMR;
+ char tmp[64];
+ long cpuclk = 0;
+
+ if (getenv_r ("cpuclk", tmp, sizeof (tmp)) > 0)
+ cpuclk = simple_strtoul (tmp, NULL, 10) * 1000000;
+
+ if ((CFG_866_CPUCLK_MIN > cpuclk) || (CFG_866_CPUCLK_MAX < cpuclk))
+ cpuclk = CFG_866_CPUCLK_DEFAULT;
+
+ gd->cpu_clk = init_pll_866 (cpuclk);
+
+ if ((immr->im_clkrst.car_sccr & SCCR_EBDF11) == 0)
+ gd->bus_clk = gd->cpu_clk;
+ else
+ gd->bus_clk = gd->cpu_clk / 2;
+
+ return (0);
+}
+
+/* Adjust sdram refresh rate to actual CPU clock.
+ */
+int sdram_adjust_866 (void)
+{
+ DECLARE_GLOBAL_DATA_PTR;
+
+ volatile immap_t *immr = (immap_t *) CFG_IMMR;
+ long mamr;
+
+ mamr = immr->im_memctl.memc_mamr;
+ mamr &= ~MAMR_PTA_MSK;
+ mamr |= ((gd->cpu_clk / CFG_866_PTA_PER_CLK) << MAMR_PTA_SHIFT);
+ immr->im_memctl.memc_mamr = mamr;
+
+ return (0);
+}
+
+/* Configure PLL for MPC866/859 CPU series
+ * PLL multiplication factor is set to the value nearest to the desired clk,
+ * assuming a oscclk of 10 MHz.
+ */
+static long init_pll_866 (long clk)
+{
+ extern void plprcr_write_866 (long);
+
+ volatile immap_t *immr = (immap_t *) CFG_IMMR;
+ long n, plprcr;
+ char mfi, mfn, mfd, s, pdf;
+ long step_mfi, step_mfn;
+
+ pdf = 0;
+ if (clk < 80000000) {
+ s = 1;
+ step_mfi = CFG_866_OSCCLK / 2;
+ mfd = 14;
+ step_mfn = CFG_866_OSCCLK / 30;
+ } else {
+ s = 0;
+ step_mfi = CFG_866_OSCCLK;
+ mfd = 29;
+ step_mfn = CFG_866_OSCCLK / 30;
+ }
+
+ /* Calculate integer part of multiplication factor
+ */
+ n = clk / step_mfi;
+ mfi = (char)n;
+
+ /* Calculate numerator of fractional part of multiplication factor
+ */
+ n = clk - (n * step_mfi);
+ mfn = (char)(n / step_mfn);
+
+ /* Calculate effective clk
+ */
+ n = (mfi * step_mfi) + (mfn * step_mfn);
+
+ immr->im_clkrstk.cark_plprcrk = KAPWR_KEY;
+
+ plprcr = (immr->im_clkrst.car_plprcr & ~(PLPRCR_MFN_MSK
+ | PLPRCR_MFD_MSK | PLPRCR_S_MSK
+ | PLPRCR_MFI_MSK | PLPRCR_DBRMO))
+ | (mfn << PLPRCR_MFN_SHIFT)
+ | (mfd << PLPRCR_MFD_SHIFT)
+ | (s << PLPRCR_S_SHIFT)
+ | (mfi << PLPRCR_MFI_SHIFT)
+ | (pdf << PLPRCR_PDF_SHIFT);
+
+ if( (mfn > 0) && ((mfd / mfn) > 10) )
+ plprcr |= PLPRCR_DBRMO;
+
+ plprcr_write_866 (plprcr); /* set value using SIU4/9 workaround */
+ immr->im_clkrstk.cark_plprcrk = 0x00000000;
+
+ return (n);
+}
+
+#endif /* CONFIG_MPC866_et_al */
+
/* ------------------------------------------------------------------------- */
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
#define CONFIG_MPC866 1 /* This is a MPC866 CPU */
#define CONFIG_TQM866M 1 /* ...on a TQM8xxM module */
-#define CFG_8XX_XIN 10000000 /* XXX XXX XXX */
+#define CFG_866_OSCCLK 10000000 /* 10 MHz - PLL input clock */
+#define CFG_866_CPUCLK_MIN 40000000 /* 40 MHz - CPU minimum clock */
+#define CFG_866_CPUCLK_MAX 133000000 /* 133 MHz - CPU maximum clock */
+#define CFG_866_CPUCLK_DEFAULT 100000000 /* 100 MHz - CPU default clock */
+ /* (it will be used if there is no */
+ /* 'cpuclk' variable with valid value) */
-#define CONFIG_8xx_CONS_SMC1 1 /* Console is on SMC1 */
+#define CONFIG_8xx_CONS_SMC1 1 /* Console is on SMC1 */
#undef CONFIG_8xx_CONS_SMC2
#undef CONFIG_8xx_CONS_NONE
#define CONFIG_BAUDRATE 115200 /* console baudrate = 115kbps */
-#define CONFIG_BOOTCOUNT_LIMIT
+#define CONFIG_BOOTCOUNT_LIMIT
#define CONFIG_BOOTDELAY 5 /* autoboot after 5 seconds */
#define CONFIG_BOARD_TYPES 1 /* support board types */
-#define CONFIG_PREBOOT "echo;" \
+#define CONFIG_PREBOOT "echo;" \
"echo Type \"run flash_nfs\" to mount root filesystem over NFS;" \
"echo"
#undef CONFIG_BOOTARGS
-#define CONFIG_EXTRA_ENV_SETTINGS \
+#define CONFIG_EXTRA_ENV_SETTINGS \
"netdev=eth0\0" \
"nfsargs=setenv bootargs root=/dev/nfs rw " \
"nfsroot=$(serverip):$(rootpath)\0" \
#undef CONFIG_WATCHDOG /* watchdog disabled */
-#define CONFIG_STATUS_LED 1 /* Status LED enabled */
+#define CONFIG_STATUS_LED 1 /* Status LED enabled */
#undef CONFIG_CAN_DRIVER /* CAN Driver support disabled */
/* enable I2C and select the hardware/software driver */
#undef CONFIG_HARD_I2C /* I2C with hardware support */
-#define CONFIG_SOFT_I2C 1 /* I2C bit-banged */
+#define CONFIG_SOFT_I2C 1 /* I2C bit-banged */
#define CFG_I2C_SPEED 93000 /* 93 kHz is supposed to work */
#define CFG_I2C_SLAVE 0xFE
#define I2C_TRISTATE (immr->im_cpm.cp_pbdir &= ~PB_SDA)
#define I2C_READ ((immr->im_cpm.cp_pbdat & PB_SDA) != 0)
#define I2C_SDA(bit) if(bit) immr->im_cpm.cp_pbdat |= PB_SDA; \
- else immr->im_cpm.cp_pbdat &= ~PB_SDA
+ else immr->im_cpm.cp_pbdat &= ~PB_SDA
#define I2C_SCL(bit) if(bit) immr->im_cpm.cp_pbdat |= PB_SCL; \
- else immr->im_cpm.cp_pbdat &= ~PB_SCL
+ else immr->im_cpm.cp_pbdat &= ~PB_SCL
#define I2C_DELAY udelay(2) /* 1/4 I2C clock duration */
#endif /* CONFIG_SOFT_I2C */
#define CFG_I2C_EEPROM_ADDR 0x50 /* EEPROM AT24C256 */
-#define CFG_I2C_EEPROM_ADDR_LEN 2 /* two byte address */
+#define CFG_I2C_EEPROM_ADDR_LEN 2 /* two byte address */
#define CFG_EEPROM_PAGE_WRITE_BITS 4
#define CFG_EEPROM_PAGE_WRITE_DELAY_MS 10 /* and takes up to 10 msec */
#define CONFIG_MAC_PARTITION
#define CONFIG_DOS_PARTITION
-#define CONFIG_RTC_MPC8xx /* use internal RTC of MPC8xx */
+#define CONFIG_RTC_MPC8xx /* use internal RTC of MPC8xx */
#define CONFIG_COMMANDS ( CONFIG_CMD_DFL | \
CFG_CMD_ASKENV | \
/*
* Miscellaneous configurable options
*/
-#define CFG_LONGHELP /* undef to save memory */
-#define CFG_PROMPT "=> " /* Monitor Command Prompt */
+#define CFG_LONGHELP /* undef to save memory */
+#define CFG_PROMPT "=> " /* Monitor Command Prompt */
#if 0
-#define CFG_HUSH_PARSER 1 /* use "hush" command parser */
+#define CFG_HUSH_PARSER 1 /* use "hush" command parser */
#endif
#ifdef CFG_HUSH_PARSER
-#define CFG_PROMPT_HUSH_PS2 "> "
+#define CFG_PROMPT_HUSH_PS2 "> "
#endif
#if (CONFIG_COMMANDS & CFG_CMD_KGDB)
-#define CFG_CBSIZE 1024 /* Console I/O Buffer Size */
+#define CFG_CBSIZE 1024 /* Console I/O Buffer Size */
#else
-#define CFG_CBSIZE 256 /* Console I/O Buffer Size */
+#define CFG_CBSIZE 256 /* Console I/O Buffer Size */
#endif
-#define CFG_PBSIZE (CFG_CBSIZE+sizeof(CFG_PROMPT)+16) /* Print Buffer Size */
-#define CFG_MAXARGS 16 /* max number of command args */
+#define CFG_PBSIZE (CFG_CBSIZE+sizeof(CFG_PROMPT)+16) /* Print Buffer Size */
+#define CFG_MAXARGS 16 /* max number of command args */
#define CFG_BARGSIZE CFG_CBSIZE /* Boot Argument Buffer Size */
#define CFG_MEMTEST_START 0x0400000 /* memtest works on */
#define CFG_MEMTEST_END 0x0C00000 /* 4 ... 12 MB in DRAM */
-#define CFG_LOAD_ADDR 0x100000 /* default load address */
+#define CFG_LOAD_ADDR 0x100000 /* default load address */
-#define CFG_HZ 1000 /* decrementer freq: 1 ms ticks */
+#define CFG_HZ 1000 /* decrementer freq: 1 ms ticks */
#define CFG_BAUDRATE_TABLE { 9600, 19200, 38400, 57600, 115200 }
* Definitions for initial stack pointer and data area (in DPRAM)
*/
#define CFG_INIT_RAM_ADDR CFG_IMMR
-#define CFG_INIT_RAM_END 0x2F00 /* End of used area in DPRAM */
-#define CFG_GBL_DATA_SIZE 64 /* size in bytes reserved for initial data */
+#define CFG_INIT_RAM_END 0x2F00 /* End of used area in DPRAM */
+#define CFG_GBL_DATA_SIZE 64 /* size in bytes reserved for initial data */
#define CFG_GBL_DATA_OFFSET (CFG_INIT_RAM_END - CFG_GBL_DATA_SIZE)
-#define CFG_INIT_SP_OFFSET CFG_GBL_DATA_OFFSET
+#define CFG_INIT_SP_OFFSET CFG_GBL_DATA_OFFSET
/*-----------------------------------------------------------------------
* Start addresses for the final memory configuration
* (Set up by the startup code)
* Please note that CFG_SDRAM_BASE _must_ start at 0
*/
-#define CFG_SDRAM_BASE 0x00000000
+#define CFG_SDRAM_BASE 0x00000000
#define CFG_FLASH_BASE 0x40000000
-#define CFG_MONITOR_LEN (256 << 10) /* Reserve 256 kB for Monitor */
+#define CFG_MONITOR_LEN (256 << 10) /* Reserve 256 kB for Monitor */
#define CFG_MONITOR_BASE CFG_FLASH_BASE
-#define CFG_MALLOC_LEN (128 << 10) /* Reserve 128 kB for malloc() */
+#define CFG_MALLOC_LEN (128 << 10) /* Reserve 128 kB for malloc() */
/*
* For booting Linux, the board info and command line data
* have to be in the first 8 MB of memory, since this is
* the maximum mapped by the Linux kernel during initialization.
*/
-#define CFG_BOOTMAPSZ (8 << 20) /* Initial Memory map for Linux */
+#define CFG_BOOTMAPSZ (8 << 20) /* Initial Memory map for Linux */
/*-----------------------------------------------------------------------
* FLASH organization
#define CFG_FLASH_ERASE_TOUT 120000 /* Timeout for Flash Erase (in ms) */
#define CFG_FLASH_WRITE_TOUT 500 /* Timeout for Flash Write (in ms) */
-#define CFG_ENV_IS_IN_FLASH 1
-#define CFG_ENV_OFFSET 0x40000 /* Offset of Environment Sector */
-#define CFG_ENV_SIZE 0x08000 /* Total Size of Environment Sector */
-#define CFG_ENV_SECT_SIZE 0x20000 /* Total Size of Environment Sector */
+#define CFG_ENV_IS_IN_FLASH 1
+#define CFG_ENV_OFFSET 0x40000 /* Offset of Environment Sector */
+#define CFG_ENV_SIZE 0x08000 /* Total Size of Environment Sector */
+#define CFG_ENV_SECT_SIZE 0x20000 /* Total Size of Environment Sector */
/* Address and size of Redundant Environment Sector */
#define CFG_ENV_OFFSET_REDUND (CFG_ENV_OFFSET+CFG_ENV_SECT_SIZE)
* Hardware Information Block
*/
#define CFG_HWINFO_OFFSET 0x0003FFC0 /* offset of HW Info block */
-#define CFG_HWINFO_SIZE 0x00000040 /* size of HW Info block */
+#define CFG_HWINFO_SIZE 0x00000040 /* size of HW Info block */
#define CFG_HWINFO_MAGIC 0x54514D38 /* 'TQM8' */
/*-----------------------------------------------------------------------
*-----------------------------------------------------------------------
* PCMCIA config., multi-function pin tri-state
*/
-#ifndef CONFIG_CAN_DRIVER
+#ifndef CONFIG_CAN_DRIVER
#define CFG_SIUMCR (SIUMCR_DBGC00 | SIUMCR_DBPC00 | SIUMCR_MLRC01)
#else /* we must activate GPL5 in the SIUMCR for CAN */
#define CFG_SIUMCR (SIUMCR_DBGC11 | SIUMCR_DBPC00 | SIUMCR_MLRC01)
*/
#define CFG_PISCR (PISCR_PS | PISCR_PITF)
-/*-----------------------------------------------------------------------
- * PLPRCR - PLL, Low-Power, and Reset Control Register 15-30
- *-----------------------------------------------------------------------
- * Reset PLL lock status sticky bit, timer expired status bit and timer
- * interrupt status bit
- *
- * set PLL multiplication factor
- */
-#if defined(CONFIG_133MHz)
- /* for 133 MHz, we use a 10 MHz clock:
- * MFN = 0x09, MFD = 0x1D, S = 0, MFI = 13
- */
-#define CFG_PLPRCR \
- ( 9 << PLPRCR_MFN_SHIFT | 0x1D << PLPRCR_MFD_SHIFT | \
- 0 << PLPRCR_S_SHIFT | 0x0D << PLPRCR_MFI_SHIFT | \
- PLPRCR_TEXPS )
-#elif defined(CONFIG_80MHz) /* for 80 MHz, we use a 16 MHz clock * 5 */
-#define CFG_PLPRCR \
- ( (5-1)<<PLPRCR_MFI_SHIFT | PLPRCR_TEXPS )
-#else /* up to 66 MHz we use a 1:1 clock */
-#define CFG_PLPRCR ( PLPRCR_SPLSS | PLPRCR_TEXPS )
-#endif /* CONFIG_??MHz */
-
/*-----------------------------------------------------------------------
* SCCR - System Clock and reset Control Register 15-27
*-----------------------------------------------------------------------
* power management and some other internal clocks
*/
#define SCCR_MASK SCCR_EBDF11
-#if defined(CONFIG_133MHz) /* for 133 MHz, we use a 10 MHz clock * 13 */
-#define CFG_SCCR (/* SCCR_TBS | */ \
- SCCR_COM00 | SCCR_DFSYNC00 | SCCR_DFBRG00 | \
- SCCR_DFNL000 | SCCR_DFNH000 | SCCR_DFLCD000 | \
- SCCR_DFALCD00)
-#elif defined(CONFIG_80MHz) /* for 80 MHz, we use a 16 MHz clock * 5 */
-#define CFG_SCCR (/* SCCR_TBS | */ \
- SCCR_COM00 | SCCR_DFSYNC00 | SCCR_DFBRG00 | \
- SCCR_DFNL000 | SCCR_DFNH000 | SCCR_DFLCD000 | \
- SCCR_DFALCD00)
-#else /* up to 66 MHz we use a 1:1 clock */
-#define CFG_SCCR (SCCR_TBS | \
- SCCR_COM00 | SCCR_DFSYNC00 | SCCR_DFBRG00 | \
+#define CFG_SCCR (SCCR_COM00 | SCCR_DFSYNC00 | SCCR_DFBRG00 | \
SCCR_DFNL000 | SCCR_DFNH000 | SCCR_DFLCD000 | \
SCCR_DFALCD00)
-#endif /* CONFIG_??MHz */
/*-----------------------------------------------------------------------
* PCMCIA stuff
*-----------------------------------------------------------------------
*/
-#define CONFIG_IDE_8xx_PCCARD 1 /* Use IDE with PC Card Adapter */
+#define CONFIG_IDE_8xx_PCCARD 1 /* Use IDE with PC Card Adapter */
-#undef CONFIG_IDE_8xx_DIRECT /* Direct IDE not supported */
-#undef CONFIG_IDE_LED /* LED for ide not supported */
+#undef CONFIG_IDE_8xx_DIRECT /* Direct IDE not supported */
+#undef CONFIG_IDE_LED /* LED for ide not supported */
#undef CONFIG_IDE_RESET /* reset for ide not supported */
#define CFG_IDE_MAXBUS 1 /* max. 1 IDE bus */
*-----------------------------------------------------------------------
*
*/
-#define CFG_DER 0
+#define CFG_DER 0
/*
* Init Memory Controller:
#define CFG_PRELIM_OR_AM 0xE0000000 /* OR addr mask */
/*
- * FLASH timing:
+ * FLASH timing: Default value of OR0 after reset
*/
-#if defined(CONFIG_133MHz)
-/* 133 MHz CPU - 66 MHz bus: */
-#define CFG_OR_TIMING_FLASH (OR_ACS_DIV1 | OR_TRLX | OR_CSNT_SAM | \
- OR_SCY_3_CLK | OR_EHTR | OR_BI)
-#elif defined(CONFIG_100MHz)
-/* 100 MHz CPU - 50 MHz bus: */
-#elif defined(CONFIG_80MHz)
-/* 80 MHz CPU - 40 MHz bus: ACS = 00, TRLX = 0, CSNT = 1, SCY = 3, EHTR = 1 */
-#define CFG_OR_TIMING_FLASH (OR_ACS_DIV1 | 0 | OR_CSNT_SAM | \
- OR_SCY_3_CLK | OR_EHTR | OR_BI)
-#elif defined(CONFIG_66MHz)
-/* 66 MHz CPU - 66 MHz bus: ACS = 00, TRLX = 1, CSNT = 1, SCY = 3, EHTR = 1 */
-#define CFG_OR_TIMING_FLASH (OR_ACS_DIV1 | OR_TRLX | OR_CSNT_SAM | \
- OR_SCY_3_CLK | OR_EHTR | OR_BI)
-#else /* 50 MHz */
-/* 50 MHz CPU - 50 MHz bus: ACS = 00, TRLX = 1, CSNT = 1, SCY = 2, EHTR = 1 */
-#define CFG_OR_TIMING_FLASH (OR_ACS_DIV1 | OR_TRLX | OR_CSNT_SAM | \
- OR_SCY_2_CLK | OR_EHTR | OR_BI)
-#endif /*CONFIG_??MHz */
+#define CFG_OR_TIMING_FLASH (OR_CSNT_SAM | OR_ACS_MSK | OR_BI | \
+ OR_SCY_15_CLK | OR_TRLX)
#define CFG_OR0_REMAP (CFG_REMAP_OR_AM | CFG_OR_TIMING_FLASH)
#define CFG_OR0_PRELIM (CFG_PRELIM_OR_AM | CFG_OR_TIMING_FLASH)
*/
#define SDRAM_BASE2_PRELIM 0x00000000 /* SDRAM bank #0 */
#define SDRAM_BASE3_PRELIM 0x20000000 /* SDRAM bank #1 */
-#define SDRAM_MAX_SIZE (256 << 20) /* max 256 MB per bank */
+#define SDRAM_MAX_SIZE (256 << 20) /* max 256 MB per bank */
/* SDRAM timing: Multiplexed addresses, GPL5 output to GPL5_A (don't care) */
#define CFG_OR_TIMING_SDRAM 0x00000A00
#define CFG_OR2_PRELIM (CFG_PRELIM_OR_AM | CFG_OR_TIMING_SDRAM )
#define CFG_BR2_PRELIM ((SDRAM_BASE2_PRELIM & BR_BA_MSK) | BR_MS_UPMA | BR_V )
-#ifndef CONFIG_CAN_DRIVER
-#define CFG_OR3_PRELIM CFG_OR2_PRELIM
+#ifndef CONFIG_CAN_DRIVER
+#define CFG_OR3_PRELIM CFG_OR2_PRELIM
#define CFG_BR3_PRELIM ((SDRAM_BASE3_PRELIM & BR_BA_MSK) | BR_MS_UPMA | BR_V )
#else /* CAN uses CS3#, so we can have only one SDRAM bank anyway */
-#define CFG_CAN_BASE 0xC0000000 /* CAN mapped at 0xC0000000 */
+#define CFG_CAN_BASE 0xC0000000 /* CAN mapped at 0xC0000000 */
#define CFG_CAN_OR_AM 0xFFFF8000 /* 32 kB address mask */
#define CFG_OR3_CAN (CFG_CAN_OR_AM | OR_G5LA | OR_BI)
#define CFG_BR3_CAN ((CFG_CAN_BASE & BR_BA_MSK) | \
BR_PS_8 | BR_MS_UPMB | BR_V )
#endif /* CONFIG_CAN_DRIVER */
+/*
+ *
+ * 4096 Rows from SDRAM example configuration
+ * 1000 factor s -> ms
+ * 64 PTP (pre-divider from MPTPR) from SDRAM example configuration
+ * 4 Number of refresh cycles per period
+ * 64 Refresh cycle in ms per number of rows
+ */
+#define CFG_866_PTA_PER_CLK ((4096 * 64 * 1000) / (4 * 64))
+
/*
* Memory Periodic Timer Prescaler
- *
- * The Divider for PTA (refresh timer) configuration is based on an
- * example SDRAM configuration (64 MBit, one bank). The adjustment to
- * the number of chip selects (NCS) and the actually needed refresh
- * rate is done by setting MPTPR.
- *
- * PTA is calculated from
- * PTA = (gclk * Trefresh) / ((2 ^ (2 * DFBRG)) * PTP * NCS)
- *
- * gclk CPU clock (not bus clock!)
- * Trefresh Refresh cycle * 4 (four word bursts used)
- *
- * 4096 Rows from SDRAM example configuration
- * 1000 factor s -> ms
- * 32 PTP (pre-divider from MPTPR) from SDRAM example configuration
- * 4 Number of refresh cycles per period
- * 64 Refresh cycle in ms per number of rows
- * --------------------------------------------
- * Divider = 4096 * 32 * 1000 / (4 * 64) = 512000
- *
- * 50 MHz => 50.000.000 / Divider = 98
- * 66 Mhz => 66.000.000 / Divider = 129
- * 80 Mhz => 80.000.000 / Divider = 156
+ * Periodic timer for refresh, start with refresh rate for 40 MHz clock
+ * (CFG_866_CPUCLK_MIN / CFG_866_PTA_PER_CLK)
*/
-#if defined(CONFIG_133MHz)
-#define CFG_MAMR_PTA 129
-#elif defined(CONFIG_100MHz)
-#define CFG_MAMR_PTA 98
-#elif defined(CONFIG_80MHz)
-#define CFG_MAMR_PTA 156
-#elif defined(CONFIG_66MHz)
-#define CFG_MAMR_PTA 129
-#else /* 50 MHz */
-#define CFG_MAMR_PTA 98
-#endif /*CONFIG_??MHz */
+#define CFG_MAMR_PTA 39
/*
* For 16 MBit, refresh rates could be 31.3 us
#define CFG_MAMR_9COL ((CFG_MAMR_PTA << MAMR_PTA_SHIFT) | MAMR_PTAE | \
MAMR_AMA_TYPE_1 | MAMR_DSA_1_CYCL | MAMR_G0CLA_A10 | \
MAMR_RLFA_1X | MAMR_WLFA_1X | MAMR_TLFA_4X)
+/* 10 column SDRAM */
+#define CFG_MAMR_10COL ((CFG_MAMR_PTA << MAMR_PTA_SHIFT) | MAMR_PTAE | \
+ MAMR_AMA_TYPE_2 | MAMR_DSA_1_CYCL | MAMR_G0CLA_A9 | \
+ MAMR_RLFA_1X | MAMR_WLFA_1X | MAMR_TLFA_4X)
/*
* Internal Definitions
*
* Boot Flags
*/
-#define BOOTFLAG_COLD 0x01 /* Normal Power-On: Boot from FLASH */
+#define BOOTFLAG_COLD 0x01 /* Normal Power-On: Boot from FLASH */
#define BOOTFLAG_WARM 0x02 /* Software reboot */
#define CONFIG_SCC1_ENET
projects / karo-tx-uboot.git / commitdiff