Initial revision

4 files changed, 1125 insertions, 0 deletions

diff --git a/cpu/mpc8xx/cpu_init.c b/cpu/mpc8xx/cpu_init.c
new file mode 100644
index 0000000000..abe62094c8
--- /dev/null
+++ b/cpu/mpc8xx/cpu_init.c
@@ -0,0 +1,262 @@
+/*
+ * (C) Copyright 2000-2002
+ * 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 <common.h>
+#include <watchdog.h>
+
+#include <mpc8xx.h>
+#include <commproc.h>
+
+#if defined(CFG_I2C_UCODE_PATCH) || defined(CFG_SPI_UCODE_PATCH)
+void cpm_load_patch (volatile immap_t * immr);
+#endif
+
+/*
+ * Breath some life into the CPU...
+ *
+ * Set up the memory map,
+ * initialize a bunch of registers,
+ * initialize the UPM's
+ */
+void cpu_init_f (volatile immap_t * immr)
+{
+#ifndef CONFIG_MBX
+	volatile memctl8xx_t *memctl = &immr->im_memctl;
+	ulong reg;
+#endif
+
+	/* SYPCR - contains watchdog control (11-9) */
+
+	immr->im_siu_conf.sc_sypcr = CFG_SYPCR;
+
+#if defined(CONFIG_WATCHDOG)
+	reset_8xx_watchdog (immr);
+#endif /* CONFIG_WATCHDOG */
+
+	/* SIUMCR - contains debug pin configuration (11-6) */
+
+	immr->im_siu_conf.sc_siumcr |= CFG_SIUMCR;
+
+	/* initialize timebase status and control register (11-26) */
+	/* unlock TBSCRK */
+
+	immr->im_sitk.sitk_tbscrk = KAPWR_KEY;
+	immr->im_sit.sit_tbscr = CFG_TBSCR;
+
+	/* initialize the PIT (11-31) */
+
+	immr->im_sitk.sitk_piscrk = KAPWR_KEY;
+	immr->im_sit.sit_piscr = CFG_PISCR;
+
+	/* PLL (CPU clock) settings (15-30) */
+
+	immr->im_clkrstk.cark_plprcrk = KAPWR_KEY;
+
+#ifndef CONFIG_MBX		/* MBX board does things different */
+
+	/* If CFG_PLPRCR (set in the various *_config.h files) tries to
+	 * set the MF field, then just copy CFG_PLPRCR over car_plprcr,
+	 * otherwise OR in CFG_PLPRCR so we do not change the currentMF
+	 * field value.
+	 */
+#if ((CFG_PLPRCR & PLPRCR_MF_MSK) != 0)
+	reg = CFG_PLPRCR;			/* reset control bits   */
+#else
+	reg = immr->im_clkrst.car_plprcr;
+	reg &= PLPRCR_MF_MSK;			/* isolate MF field */
+	reg |= CFG_PLPRCR;			/* reset control bits   */
+#endif
+	immr->im_clkrst.car_plprcr = reg;
+
+	/* System integration timers. Don't change EBDF! (15-27) */
+
+	immr->im_clkrstk.cark_sccrk = KAPWR_KEY;
+	reg = immr->im_clkrst.car_sccr;
+	reg &= SCCR_MASK;
+	reg |= CFG_SCCR;
+	immr->im_clkrst.car_sccr = reg;
+
+	/*
+	 * Memory Controller:
+	 */
+
+	/* perform BR0 reset that MPC850 Rev. A can't guarantee */
+	reg = memctl->memc_br0;
+	reg &= BR_PS_MSK;	/* Clear everything except Port Size bits */
+	reg |= BR_V;		/* then add just the "Bank Valid" bit     */
+	memctl->memc_br0 = reg;
+
+	/* Map banks 0 (and maybe 1) to the FLASH banks 0 (and 1) at
+	 * preliminary addresses - these have to be modified later
+	 * when FLASH size has been determined
+	 *
+	 * Depending on the size of the memory region defined by
+	 * CFG_OR0_REMAP some boards (wide address mask) allow to map the
+	 * CFG_MONITOR_BASE, while others (narrower address mask) can't
+	 * map CFG_MONITOR_BASE.
+	 *
+	 * For example, for CONFIG_IVMS8, the CFG_MONITOR_BASE is
+	 * 0xff000000, but CFG_OR0_REMAP's address mask is 0xfff80000.
+	 *
+	 * If BR0 wasn't loaded with address base 0xff000000, then BR0's
+	 * base address remains as 0x00000000. However, the address mask
+	 * have been narrowed to 512Kb, so CFG_MONITOR_BASE wasn't mapped
+	 * into the Bank0.
+	 *
+	 * This is why CONFIG_IVMS8 and similar boards must load BR0 with
+	 * CFG_BR0_PRELIM in advance.
+	 *
+	 * [Thanks to Michael Liao for this explanation.
+	 *  I owe him a free beer. - wd]
+	 */
+
+#if defined(CONFIG_GTH)	        || \
+    defined(CONFIG_HERMES)	|| \
+    defined(CONFIG_ICU862)	|| \
+    defined(CONFIG_IP860)	|| \
+    defined(CONFIG_IVML24)	|| \
+    defined(CONFIG_IVMS8)	|| \
+    defined(CONFIG_LWMON)	|| \
+    defined(CONFIG_MHPC)	|| \
+    defined(CONFIG_PCU_E)	|| \
+    defined(CONFIG_R360MPI)	|| \
+    defined(CONFIG_RPXCLASSIC)	|| \
+    defined(CONFIG_RPXLITE)	|| \
+    defined(CONFIG_SPD823TS)	|| \
+   (defined(CONFIG_MPC860T) && defined(CONFIG_FADS))
+
+	memctl->memc_br0 = CFG_BR0_PRELIM;
+#endif
+
+#if defined(CFG_OR0_REMAP)
+	memctl->memc_or0 = CFG_OR0_REMAP;
+#endif
+#if defined(CFG_OR1_REMAP)
+	memctl->memc_or1 = CFG_OR1_REMAP;
+#endif
+#if defined(CFG_OR5_REMAP)
+	memctl->memc_or5 = CFG_OR5_REMAP;
+#endif
+
+	/* now restrict to preliminary range */
+	memctl->memc_br0 = CFG_BR0_PRELIM;
+	memctl->memc_or0 = CFG_OR0_PRELIM;
+
+#if (defined(CFG_OR1_PRELIM) && defined(CFG_BR1_PRELIM))
+	memctl->memc_or1 = CFG_OR1_PRELIM;
+	memctl->memc_br1 = CFG_BR1_PRELIM;
+#endif
+
+#if defined(CONFIG_IP860) /* disable CS0 now that Flash is mapped on CS1 */
+	memctl->memc_br0 = 0;
+#endif
+
+#if defined(CFG_OR2_PRELIM) && defined(CFG_BR2_PRELIM)
+	memctl->memc_or2 = CFG_OR2_PRELIM;
+	memctl->memc_br2 = CFG_BR2_PRELIM;
+#endif
+
+#if defined(CFG_OR3_PRELIM) && defined(CFG_BR3_PRELIM)
+	memctl->memc_or3 = CFG_OR3_PRELIM;
+	memctl->memc_br3 = CFG_BR3_PRELIM;
+#endif
+
+#if defined(CFG_OR4_PRELIM) && defined(CFG_BR4_PRELIM)
+	memctl->memc_or4 = CFG_OR4_PRELIM;
+	memctl->memc_br4 = CFG_BR4_PRELIM;
+#endif
+
+#if defined(CFG_OR5_PRELIM) && defined(CFG_BR5_PRELIM)
+	memctl->memc_or5 = CFG_OR5_PRELIM;
+	memctl->memc_br5 = CFG_BR5_PRELIM;
+#endif
+
+#if defined(CFG_OR6_PRELIM) && defined(CFG_BR6_PRELIM)
+	memctl->memc_or6 = CFG_OR6_PRELIM;
+	memctl->memc_br6 = CFG_BR6_PRELIM;
+#endif
+
+#if defined(CFG_OR7_PRELIM) && defined(CFG_BR7_PRELIM)
+	memctl->memc_or7 = CFG_OR7_PRELIM;
+	memctl->memc_br7 = CFG_BR7_PRELIM;
+#endif
+
+#endif /* ! CONFIG_MBX */
+
+	/*
+	 * Reset CPM
+	 */
+	immr->im_cpm.cp_cpcr = CPM_CR_RST | CPM_CR_FLG;
+	do {			/* Spin until command processed     */
+		__asm__ ("eieio");
+	} while (immr->im_cpm.cp_cpcr & CPM_CR_FLG);
+
+#ifdef CONFIG_MBX
+	/*
+	 * on the MBX, things are a little bit different:
+	 * - we need to read the VPD to get board information
+	 * - the plprcr is set up dynamically
+	 * - the memory controller is set up dynamically
+	 */
+	mbx_init ();
+#endif /* CONFIG_MBX */
+
+#ifdef CONFIG_RPXCLASSIC
+	rpxclassic_init ();
+#endif
+
+#ifdef CFG_RCCR			/* must be done before cpm_load_patch() */
+	/* write config value */
+	immr->im_cpm.cp_rccr = CFG_RCCR;
+#endif
+
+#if defined(CFG_I2C_UCODE_PATCH) || defined(CFG_SPI_UCODE_PATCH)
+	cpm_load_patch (immr);	/* load mpc8xx  microcode patch */
+#endif
+}
+
+/*
+ * initialize higher level parts of CPU like timers
+ */
+int cpu_init_r (void)
+{
+#if defined(CFG_RTCSC) || defined(CFG_RMDS)
+	DECLARE_GLOBAL_DATA_PTR;
+
+	bd_t *bd = gd->bd;
+	volatile immap_t *immr = (volatile immap_t *) (bd->bi_immr_base);
+#endif
+
+#ifdef CFG_RTCSC
+	/* Unlock RTSC register */
+	immr->im_sitk.sitk_rtcsck = KAPWR_KEY;
+	/* write config value */
+	immr->im_sit.sit_rtcsc = CFG_RTCSC;
+#endif
+
+#ifdef CFG_RMDS
+	/* write config value */
+	immr->im_cpm.cp_rmds = CFG_RMDS;
+#endif
+	return (0);
+}
diff --git a/cpu/mpc8xx/serial.c b/cpu/mpc8xx/serial.c
new file mode 100644
index 0000000000..0690300b24
--- /dev/null
+++ b/cpu/mpc8xx/serial.c
@@ -0,0 +1,640 @@
+/*
+ * (C) Copyright 2000
+ * 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 <common.h>
+#include <commproc.h>
+#include <command.h>
+
+#if !defined(CONFIG_8xx_CONS_NONE)	/* No Console at all */
+
+#if defined(CONFIG_8xx_CONS_SMC1)	/* Console on SMC1 */
+#define	SMC_INDEX	0
+#undef 	SCC_INDEX
+#define PROFF_SMC	PROFF_SMC1
+#define CPM_CR_CH_SMC	CPM_CR_CH_SMC1
+
+#elif defined(CONFIG_8xx_CONS_SMC2)	/* Console on SMC2 */
+#define SMC_INDEX	1
+#undef 	SCC_INDEX
+#define PROFF_SMC	PROFF_SMC2
+#define CPM_CR_CH_SMC	CPM_CR_CH_SMC2
+
+#elif defined(CONFIG_8xx_CONS_SCC1)	/* Console on SCC1 */
+#undef  SMC_INDEX
+#define SCC_INDEX	0
+#define PROFF_SCC	PROFF_SCC1
+#define CPM_CR_CH_SCC	CPM_CR_CH_SCC1
+
+#elif defined(CONFIG_8xx_CONS_SCC2)	/* Console on SCC2 */
+#undef  SMC_INDEX
+#define SCC_INDEX	1
+#define PROFF_SCC	PROFF_SCC2
+#define CPM_CR_CH_SCC	CPM_CR_CH_SCC2
+
+#elif defined(CONFIG_8xx_CONS_SCC3)	/* Console on SCC3 */
+#undef  SMC_INDEX
+#define SCC_INDEX	2
+#define PROFF_SCC	PROFF_SCC3
+#define CPM_CR_CH_SCC	CPM_CR_CH_SCC3
+
+#elif defined(CONFIG_8xx_CONS_SCC4)	/* Console on SCC4 */
+#undef  SMC_INDEX
+#define SCC_INDEX	3
+#define PROFF_SCC	PROFF_SCC4
+#define CPM_CR_CH_SCC	CPM_CR_CH_SCC4
+
+#else /* CONFIG_8xx_CONS_? */
+#error "console not correctly defined"
+#endif
+
+#if (defined (CONFIG_8xx_CONS_SMC1) || defined (CONFIG_8xx_CONS_SMC2))
+
+/*
+ * Minimal serial functions needed to use one of the SMC ports
+ * as serial console interface.
+ */
+
+int serial_init (void)
+{
+        volatile immap_t *im = (immap_t *)CFG_IMMR;
+	volatile smc_t *sp;
+	volatile smc_uart_t *up;
+	volatile cbd_t *tbdf, *rbdf;
+	volatile cpm8xx_t *cp = &(im->im_cpm);
+#if (!defined(CONFIG_8xx_CONS_SMC1)) && (defined(CONFIG_MPC823) || defined(CONFIG_MPC850))
+	volatile iop8xx_t *ip = (iop8xx_t *)&(im->im_ioport);
+#endif
+	uint	dpaddr;
+
+	/* initialize pointers to SMC */
+
+	sp = (smc_t *) &(cp->cp_smc[SMC_INDEX]);
+	up = (smc_uart_t *) &cp->cp_dparam[PROFF_SMC];
+
+	/* Disable transmitter/receiver.
+	*/
+	sp->smc_smcmr &= ~(SMCMR_REN | SMCMR_TEN);
+
+	/* Enable SDMA.
+	*/
+	im->im_siu_conf.sc_sdcr = 1;
+
+	/* clear error conditions */
+#ifdef	CFG_SDSR
+	im->im_sdma.sdma_sdsr = CFG_SDSR;
+#else
+	im->im_sdma.sdma_sdsr = 0x83;
+#endif
+
+	/* clear SDMA interrupt mask */
+#ifdef	CFG_SDMR
+	im->im_sdma.sdma_sdmr = CFG_SDMR;
+#else
+	im->im_sdma.sdma_sdmr = 0x00;
+#endif
+
+#if defined(CONFIG_8xx_CONS_SMC1)
+	/* Use Port B for SMC1 instead of other functions.
+	*/
+	cp->cp_pbpar |=  0x000000c0;
+	cp->cp_pbdir &= ~0x000000c0;
+	cp->cp_pbodr &= ~0x000000c0;
+#else	/* CONFIG_8xx_CONS_SMC2 */
+# if defined(CONFIG_MPC823) || defined(CONFIG_MPC850)
+	/* Use Port A for SMC2 instead of other functions.
+	*/
+	ip->iop_papar |=  0x00c0;
+	ip->iop_padir &= ~0x00c0;
+	ip->iop_paodr &= ~0x00c0;
+# else	/* must be a 860 then */
+	/* Use Port B for SMC2 instead of other functions.
+	*/
+	cp->cp_pbpar |=  0x00000c00;
+	cp->cp_pbdir &= ~0x00000c00;
+	cp->cp_pbodr &= ~0x00000c00;
+# endif
+#endif
+
+#if defined(CONFIG_FADS)
+	/* Enable RS232 */
+#if defined(CONFIG_8xx_CONS_SMC1)
+	*((uint *) BCSR1) &= ~BCSR1_RS232EN_1;
+#else
+	*((uint *) BCSR1) &= ~BCSR1_RS232EN_2;
+#endif
+#endif	/* CONFIG_FADS */
+
+#if defined(CONFIG_RPXLITE) || defined(CONFIG_RPXCLASSIC)
+	/* Enable Monitor Port Transceiver */
+	*((uchar *) BCSR0) |= BCSR0_ENMONXCVR ;
+#endif /* CONFIG_RPXLITE */
+
+	/* Set the physical address of the host memory buffers in
+	 * the buffer descriptors.
+	 */
+
+#ifdef CFG_ALLOC_DPRAM
+	dpaddr = dpram_alloc_align (sizeof(cbd_t)*2 + 2, 8) ;
+#else
+	dpaddr = CPM_SERIAL_BASE ;
+#endif
+
+	/* Allocate space for two buffer descriptors in the DP ram.
+	 * For now, this address seems OK, but it may have to
+	 * change with newer versions of the firmware.
+	 * damm: allocating space after the two buffers for rx/tx data
+	 */
+
+	rbdf = (cbd_t *)&cp->cp_dpmem[dpaddr];
+	rbdf->cbd_bufaddr = (uint) (rbdf+2);
+	rbdf->cbd_sc = 0;
+	tbdf = rbdf + 1;
+	tbdf->cbd_bufaddr = ((uint) (rbdf+2)) + 1;
+	tbdf->cbd_sc = 0;
+
+	/* Set up the uart parameters in the parameter ram.
+	*/
+	up->smc_rbase = dpaddr;
+	up->smc_tbase = dpaddr+sizeof(cbd_t);
+	up->smc_rfcr = SMC_EB;
+	up->smc_tfcr = SMC_EB;
+
+#if defined(CONFIG_MBX)
+	board_serial_init();
+#endif	/* CONFIG_MBX */
+
+	/* Set UART mode, 8 bit, no parity, one stop.
+	 * Enable receive and transmit.
+	 */
+	sp->smc_smcmr = smcr_mk_clen(9) |  SMCMR_SM_UART;
+
+	/* Mask all interrupts and remove anything pending.
+	*/
+	sp->smc_smcm = 0;
+	sp->smc_smce = 0xff;
+
+	/* Set up the baud rate generator.
+	*/
+	serial_setbrg ();
+
+	/* Make the first buffer the only buffer.
+	*/
+	tbdf->cbd_sc |= BD_SC_WRAP;
+	rbdf->cbd_sc |= BD_SC_EMPTY | BD_SC_WRAP;
+
+	/* Single character receive.
+	*/
+	up->smc_mrblr = 1;
+	up->smc_maxidl = 0;
+
+	/* Initialize Tx/Rx parameters.
+	*/
+
+	while (cp->cp_cpcr & CPM_CR_FLG)  /* wait if cp is busy */
+	  ;
+
+	cp->cp_cpcr = mk_cr_cmd(CPM_CR_CH_SMC, CPM_CR_INIT_TRX) | CPM_CR_FLG;
+
+	while (cp->cp_cpcr & CPM_CR_FLG)  /* wait if cp is busy */
+	  ;
+
+	/* Enable transmitter/receiver.
+	*/
+	sp->smc_smcmr |= SMCMR_REN | SMCMR_TEN;
+
+	return (0);
+}
+
+void
+serial_setbrg (void)
+{
+	DECLARE_GLOBAL_DATA_PTR;
+
+        volatile immap_t *im = (immap_t *)CFG_IMMR;
+	volatile cpm8xx_t *cp = &(im->im_cpm);
+
+	/* Set up the baud rate generator.
+	 * See 8xx_io/commproc.c for details.
+	 *
+	 * Wire BRG1 to SMCx
+	 */
+
+	cp->cp_simode = 0x00000000;
+
+	cp->cp_brgc1 =
+		(((gd->cpu_clk / 16 / gd->baudrate)-1) << 1) | CPM_BRG_EN;
+}
+
+void
+serial_putc(const char c)
+{
+	volatile cbd_t		*tbdf;
+	volatile char		*buf;
+	volatile smc_uart_t	*up;
+        volatile immap_t	*im = (immap_t *)CFG_IMMR;
+	volatile cpm8xx_t	*cpmp = &(im->im_cpm);
+
+	if (c == '\n')
+		serial_putc ('\r');
+
+	up = (smc_uart_t *)&cpmp->cp_dparam[PROFF_SMC];
+
+	tbdf = (cbd_t *)&cpmp->cp_dpmem[up->smc_tbase];
+
+	/* Wait for last character to go.
+	*/
+
+	buf = (char *)tbdf->cbd_bufaddr;
+#if 0
+	__asm__("eieio");
+	while (tbdf->cbd_sc & BD_SC_READY)
+		__asm__("eieio");
+#endif
+
+	*buf = c;
+	tbdf->cbd_datlen = 1;
+	tbdf->cbd_sc |= BD_SC_READY;
+	__asm__("eieio");
+#if 1
+	while (tbdf->cbd_sc & BD_SC_READY)
+		__asm__("eieio");
+#endif
+}
+
+int
+serial_getc(void)
+{
+	volatile cbd_t		*rbdf;
+	volatile unsigned char	*buf;
+	volatile smc_uart_t	*up;
+        volatile immap_t	*im = (immap_t *)CFG_IMMR;
+	volatile cpm8xx_t	*cpmp = &(im->im_cpm);
+	unsigned char		c;
+
+	up = (smc_uart_t *)&cpmp->cp_dparam[PROFF_SMC];
+
+	rbdf = (cbd_t *)&cpmp->cp_dpmem[up->smc_rbase];
+
+	/* Wait for character to show up.
+	*/
+	buf = (unsigned char *)rbdf->cbd_bufaddr;
+	while (rbdf->cbd_sc & BD_SC_EMPTY)
+		;
+	c = *buf;
+	rbdf->cbd_sc |= BD_SC_EMPTY;
+
+	return(c);
+}
+
+int
+serial_tstc()
+{
+	volatile cbd_t		*rbdf;
+	volatile smc_uart_t	*up;
+        volatile immap_t	*im = (immap_t *)CFG_IMMR;
+	volatile cpm8xx_t	*cpmp = &(im->im_cpm);
+
+	up = (smc_uart_t *)&cpmp->cp_dparam[PROFF_SMC];
+
+	rbdf = (cbd_t *)&cpmp->cp_dpmem[up->smc_rbase];
+
+	return(!(rbdf->cbd_sc & BD_SC_EMPTY));
+}
+
+#else	/* ! CONFIG_8xx_CONS_SMC1, CONFIG_8xx_CONS_SMC2 */
+
+int serial_init (void)
+{
+        volatile immap_t *im = (immap_t *)CFG_IMMR;
+	volatile scc_t *sp;
+	volatile scc_uart_t *up;
+	volatile cbd_t *tbdf, *rbdf;
+	volatile cpm8xx_t *cp = &(im->im_cpm);
+	uint	 dpaddr;
+#if (SCC_INDEX != 2) || !defined(CONFIG_MPC850)
+	volatile iop8xx_t *ip = (iop8xx_t *)&(im->im_ioport);
+#endif
+
+	/* initialize pointers to SCC */
+
+	sp = (scc_t *) &(cp->cp_scc[SCC_INDEX]);
+	up = (scc_uart_t *) &cp->cp_dparam[PROFF_SCC];
+
+#if defined(CONFIG_LWMON) && defined(CONFIG_8xx_CONS_SCC2)
+    {	/* Disable Ethernet, enable Serial */
+	uchar c;
+
+	c = pic_read  (0x61);
+	c &= ~0x40;	/* enable COM3 */
+	c |=  0x80;	/* disable Ethernet */
+	pic_write (0x61, c);
+
+	/* enable RTS2 */
+	cp->cp_pbpar |=  0x2000;
+	cp->cp_pbdat |=  0x2000;
+	cp->cp_pbdir |=  0x2000;
+    }
+#endif	/* CONFIG_LWMON */
+
+	/* Disable transmitter/receiver.
+	*/
+	sp->scc_gsmrl &= ~(SCC_GSMRL_ENR | SCC_GSMRL_ENT);
+
+#if (SCC_INDEX == 2) && defined(CONFIG_MPC850)
+	/*
+	 * The MPC850 has SCC3 on Port B
+	 */
+	cp->cp_pbpar |=  0x06;
+	cp->cp_pbdir &= ~0x06;
+	cp->cp_pbodr &= ~0x06;
+
+#elif (SCC_INDEX < 2) || !defined(CONFIG_IP860)
+	/*
+	 * Standard configuration for SCC's is on Part A
+	 */
+	ip->iop_papar |=  ((3 << (2 * SCC_INDEX)));
+	ip->iop_padir &= ~((3 << (2 * SCC_INDEX)));
+	ip->iop_paodr &= ~((3 << (2 * SCC_INDEX)));
+#else
+	/*
+	 * The IP860 has SCC3 and SCC4 on Port D
+	 */
+	ip->iop_pdpar |=  ((3 << (2 * SCC_INDEX)));
+#endif
+
+	/* Allocate space for two buffer descriptors in the DP ram.
+	 */
+
+#ifdef CFG_ALLOC_DPRAM
+	dpaddr = dpram_alloc_align (sizeof(cbd_t)*2 + 2, 8) ;
+#else
+	dpaddr = CPM_SERIAL_BASE ;
+#endif
+
+	/* Enable SDMA.
+	*/
+	im->im_siu_conf.sc_sdcr = 0x0001;
+
+	/* Set the physical address of the host memory buffers in
+	 * the buffer descriptors.
+	 */
+
+	rbdf = (cbd_t *)&cp->cp_dpmem[dpaddr];
+	rbdf->cbd_bufaddr = (uint) (rbdf+2);
+	rbdf->cbd_sc = 0;
+	tbdf = rbdf + 1;
+	tbdf->cbd_bufaddr = ((uint) (rbdf+2)) + 1;
+	tbdf->cbd_sc = 0;
+
+	/* Set up the baud rate generator.
+	*/
+	serial_setbrg ();
+
+	/* Set up the uart parameters in the parameter ram.
+	*/
+	up->scc_genscc.scc_rbase = dpaddr;
+	up->scc_genscc.scc_tbase = dpaddr+sizeof(cbd_t);
+
+	/* Initialize Tx/Rx parameters.
+	*/
+	while (cp->cp_cpcr & CPM_CR_FLG)  /* wait if cp is busy */
+		;
+	cp->cp_cpcr = mk_cr_cmd(CPM_CR_CH_SCC, CPM_CR_INIT_TRX) | CPM_CR_FLG;
+
+	while (cp->cp_cpcr & CPM_CR_FLG)  /* wait if cp is busy */
+		;
+
+	up->scc_genscc.scc_rfcr  = SCC_EB | 0x05;
+	up->scc_genscc.scc_tfcr  = SCC_EB | 0x05;
+
+	up->scc_genscc.scc_mrblr = 1;	/* Single character receive */
+	up->scc_maxidl = 0;		/* disable max idle */
+	up->scc_brkcr  = 1;		/* send one break character on stop TX */
+	up->scc_parec  = 0;
+	up->scc_frmec  = 0;
+	up->scc_nosec  = 0;
+	up->scc_brkec  = 0;
+	up->scc_uaddr1 = 0;
+	up->scc_uaddr2 = 0;
+	up->scc_toseq  = 0;
+	up->scc_char1  = 0x8000;
+	up->scc_char2  = 0x8000;
+	up->scc_char3  = 0x8000;
+	up->scc_char4  = 0x8000;
+	up->scc_char5  = 0x8000;
+	up->scc_char6  = 0x8000;
+	up->scc_char7  = 0x8000;
+	up->scc_char8  = 0x8000;
+	up->scc_rccm   = 0xc0ff;
+
+	/* Set low latency / small fifo.
+	 */
+	sp->scc_gsmrh = SCC_GSMRH_RFW;
+
+	/* Set SCC(x) clock mode to 16x
+	 * See 8xx_io/commproc.c for details.
+	 *
+	 * Wire BRG1 to SCCn
+	 */
+
+	/* Set UART mode, clock divider 16 on Tx and Rx
+	 */
+	sp->scc_gsmrl |=
+		(SCC_GSMRL_MODE_UART | SCC_GSMRL_TDCR_16 | SCC_GSMRL_RDCR_16);
+
+	sp->scc_psmr  |= SCU_PSMR_CL;
+
+	/* Mask all interrupts and remove anything pending.
+	*/
+	sp->scc_sccm = 0;
+	sp->scc_scce = 0xffff;
+	sp->scc_dsr  = 0x7e7e;
+	sp->scc_psmr = 0x3000;
+
+	/* Make the first buffer the only buffer.
+	*/
+	tbdf->cbd_sc |= BD_SC_WRAP;
+	rbdf->cbd_sc |= BD_SC_EMPTY | BD_SC_WRAP;
+
+	/* Enable transmitter/receiver.
+	*/
+	sp->scc_gsmrl |= (SCC_GSMRL_ENR | SCC_GSMRL_ENT);
+
+	return (0);
+}
+
+void
+serial_setbrg (void)
+{
+	DECLARE_GLOBAL_DATA_PTR;
+
+        volatile immap_t *im = (immap_t *)CFG_IMMR;
+	volatile cpm8xx_t *cp = &(im->im_cpm);
+
+	/* Set up the baud rate generator.
+	 * See 8xx_io/commproc.c for details.
+	 *
+	 * Wire BRG1 to SCCx
+	 */
+
+	cp->cp_sicr &= ~(0x000000FF << (8 * SCC_INDEX));
+	/* no |= needed, since BRG1 is 000 */
+
+	cp->cp_brgc1 =
+		(((gd->cpu_clk / 16 / gd->baudrate)-1) << 1) | CPM_BRG_EN;
+}
+
+void
+serial_putc(const char c)
+{
+	volatile cbd_t		*tbdf;
+	volatile char		*buf;
+	volatile scc_uart_t	*up;
+        volatile immap_t	*im = (immap_t *)CFG_IMMR;
+	volatile cpm8xx_t	*cpmp = &(im->im_cpm);
+
+	if (c == '\n')
+		serial_putc ('\r');
+
+	up = (scc_uart_t *)&cpmp->cp_dparam[PROFF_SCC];
+
+	tbdf = (cbd_t *)&cpmp->cp_dpmem[up->scc_genscc.scc_tbase];
+
+	/* Wait for last character to go.
+	*/
+
+	buf = (char *)tbdf->cbd_bufaddr;
+#if 0
+	__asm__("eieio");
+	while (tbdf->cbd_sc & BD_SC_READY)
+		__asm__("eieio");
+#endif
+
+	*buf = c;
+	tbdf->cbd_datlen = 1;
+	tbdf->cbd_sc |= BD_SC_READY;
+	__asm__("eieio");
+#if 1
+	while (tbdf->cbd_sc & BD_SC_READY)
+		__asm__("eieio");
+#endif
+}
+
+int
+serial_getc(void)
+{
+	volatile cbd_t		*rbdf;
+	volatile unsigned char	*buf;
+	volatile scc_uart_t	*up;
+        volatile immap_t	*im = (immap_t *)CFG_IMMR;
+	volatile cpm8xx_t	*cpmp = &(im->im_cpm);
+	unsigned char		c;
+
+	up = (scc_uart_t *)&cpmp->cp_dparam[PROFF_SCC];
+
+	rbdf = (cbd_t *)&cpmp->cp_dpmem[up->scc_genscc.scc_rbase];
+
+	/* Wait for character to show up.
+	*/
+	buf = (unsigned char *)rbdf->cbd_bufaddr;
+	while (rbdf->cbd_sc & BD_SC_EMPTY)
+		;
+	c = *buf;
+	rbdf->cbd_sc |= BD_SC_EMPTY;
+
+	return(c);
+}
+
+int
+serial_tstc()
+{
+	volatile cbd_t		*rbdf;
+	volatile scc_uart_t	*up;
+        volatile immap_t	*im = (immap_t *)CFG_IMMR;
+	volatile cpm8xx_t	*cpmp = &(im->im_cpm);
+
+	up = (scc_uart_t *)&cpmp->cp_dparam[PROFF_SCC];
+
+	rbdf = (cbd_t *)&cpmp->cp_dpmem[up->scc_genscc.scc_rbase];
+
+	return(!(rbdf->cbd_sc & BD_SC_EMPTY));
+}
+
+#endif	/* CONFIG_8xx_CONS_SMC1, CONFIG_8xx_CONS_SMC2 */
+
+
+void
+serial_puts (const char *s)
+{
+	while (*s) {
+		serial_putc (*s++);
+	}
+}
+
+
+#if (CONFIG_COMMANDS & CFG_CMD_KGDB)
+
+void
+kgdb_serial_init(void)
+{
+#if defined(CONFIG_8xx_CONS_SMC1)
+	serial_printf("[on SMC1] ");
+#elif defined(CONFIG_8xx_CONS_SMC2)
+	serial_printf("[on SMC2] ");
+#elif defined(CONFIG_8xx_CONS_SCC1)
+	serial_printf("[on SCC1] ");
+#elif defined(CONFIG_8xx_CONS_SCC2)
+	serial_printf("[on SCC2] ");
+#elif defined(CONFIG_8xx_CONS_SCC3)
+	serial_printf("[on SCC3] ");
+#elif defined(CONFIG_8xx_CONS_SCC4)
+	serial_printf("[on SCC4] ");
+#endif
+}
+
+void
+putDebugChar (int c)
+{
+	serial_putc (c);
+}
+
+void
+putDebugStr (const char *str)
+{
+	serial_puts (str);
+}
+
+int
+getDebugChar (void)
+{
+	return serial_getc();
+}
+
+void
+kgdb_interruptible (int yes)
+{
+	return;
+}
+#endif	/* CFG_CMD_KGDB	*/
+
+#endif	/* CONFIG_8xx_CONS_NONE */
diff --git a/cpu/mpc8xx/speed.c b/cpu/mpc8xx/speed.c
new file mode 100644
index 0000000000..ef32371aba
--- /dev/null
+++ b/cpu/mpc8xx/speed.c
@@ -0,0 +1,187 @@
+/*
+ * (C) Copyright 2000-2002
+ * 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 <common.h>
+#include <mpc8xx.h>
+#include <asm/processor.h>
+
+#define PITC_SHIFT 16
+#define PITR_SHIFT 16
+/* pitc values to time for 58/8192 seconds (about 70.8 milliseconds) */
+#define SPEED_PIT_COUNTS 58
+#define SPEED_PITC	 ((SPEED_PIT_COUNTS - 1) << PITC_SHIFT)
+#define SPEED_PITC_INIT	 ((SPEED_PIT_COUNTS + 1) << PITC_SHIFT)
+
+#if !defined(CONFIG_8xx_GCLK_FREQ)
+/* Access functions for the Machine State Register */
+static __inline__ unsigned long get_msr(void)
+{
+	unsigned long msr;
+
+	asm volatile("mfmsr %0" : "=r" (msr) :);
+	return msr;
+}
+
+static __inline__ void set_msr(unsigned long msr)
+{
+	asm volatile("mtmsr %0" : : "r" (msr));
+}
+#endif
+
+/* ------------------------------------------------------------------------- */
+
+/*
+ * Measure CPU clock speed (core clock GCLK1, GCLK2),
+ * also determine bus clock speed (checking bus divider factor)
+ *
+ * (Approx. GCLK frequency in Hz)
+ *
+ * Initializes timer 2 and PIT, but disables them before return.
+ * [Use timer 2, because MPC823 CPUs mask 0.x do not have timers 3 and 4]
+ *
+ * When measuring the CPU clock against the PIT, we count cpu clocks
+ * for 58/8192 seconds with a prescale divide by 177 for the cpu clock.
+ * These strange values for the timing interval and prescaling are used
+ * because the formula for the CPU clock is:
+ *
+ *   CPU clock = count * (177 * (8192 / 58))
+ *
+ *             = count * 24999.7241
+ *
+ *   which is very close to
+ *
+ *             = count * 25000
+ *
+ * Since the count gives the CPU clock divided by 25000, we can get
+ * the CPU clock rounded to the nearest 0.1 MHz by
+ *
+ *   CPU clock = ((count + 2) / 4) * 100000;
+ *
+ * The rounding is important since the measurement is sometimes going
+ * to be high or low by 0.025 MHz, depending on exactly how the clocks
+ * and counters interact. By rounding we get the exact answer for any
+ * CPU clock that is an even multiple of 0.1 MHz.
+ */
+
+int get_clocks (void)
+{
+	DECLARE_GLOBAL_DATA_PTR;
+
+	volatile immap_t *immr = (immap_t *) CFG_IMMR;
+#ifndef	CONFIG_8xx_GCLK_FREQ
+	volatile cpmtimer8xx_t *timerp = &immr->im_cpmtimer;
+	ulong timer2_val;
+	ulong msr_val;
+
+	/* Reset + Stop Timer 2, no cascading
+	 */
+	timerp->cpmt_tgcr &= ~(TGCR_CAS2 | TGCR_RST2);
+
+	/* Keep stopped, halt in debug mode
+	 */
+	timerp->cpmt_tgcr |= (TGCR_FRZ2 | TGCR_STP2);
+
+	/* Timer 2 setup:
+	 * Output ref. interrupt disable, int. clock
+	 * Prescale by 177. Note that prescaler divides by value + 1
+	 * so we must subtract 1 here.
+	 */
+	timerp->cpmt_tmr2 = ((177 - 1) << TMR_PS_SHIFT) | TMR_ICLK_IN_GEN;
+
+	timerp->cpmt_tcn2 = 0;		/* reset state      */
+	timerp->cpmt_tgcr |= TGCR_RST2;	/* enable timer 2   */
+
+	/*
+	 * PIT setup:
+	 *
+         * We want to time for SPEED_PITC_COUNTS counts (of 8192 Hz),
+         * so the count value would be SPEED_PITC_COUNTS - 1.
+         * But there would be an uncertainty in the start time of 1/4
+         * count since when we enable the PIT the count is not
+         * synchronized to the 32768 Hz oscillator. The trick here is
+         * to start the count higher and wait until the PIT count
+         * changes to the required value before starting timer 2.
+	 *
+         * One count high should be enough, but occasionally the start
+         * is off by 1 or 2 counts of 32768 Hz. With the start value
+         * set two counts high it seems very reliable.
+         */
+
+	immr->im_sitk.sitk_pitck = KAPWR_KEY;	/* PIT initialization */
+	immr->im_sit.sit_pitc = SPEED_PITC_INIT;
+
+	immr->im_sitk.sitk_piscrk = KAPWR_KEY;
+	immr->im_sit.sit_piscr = CFG_PISCR;
+
+	/*
+	 * Start measurement - disable interrupts, just in case
+	 */
+	msr_val = get_msr ();
+	set_msr (msr_val & ~MSR_EE);
+
+	immr->im_sit.sit_piscr |= PISCR_PTE;
+
+	/* spin until get exact count when we want to start */
+	while (immr->im_sit.sit_pitr > SPEED_PITC);
+
+	timerp->cpmt_tgcr &= ~TGCR_STP2;	/* Start Timer 2    */
+	while ((immr->im_sit.sit_piscr & PISCR_PS) == 0);
+	timerp->cpmt_tgcr |= TGCR_STP2;		/* Stop  Timer 2    */
+
+	/* re-enable external interrupts if they were on */
+	set_msr (msr_val);
+
+	/* Disable timer and PIT
+	 */
+	timer2_val = timerp->cpmt_tcn2;		/* save before reset timer */
+
+	timerp->cpmt_tgcr &= ~(TGCR_RST2 | TGCR_FRZ2 | TGCR_STP2);
+	immr->im_sit.sit_piscr &= ~PISCR_PTE;
+
+	gd->cpu_clk = ((timer2_val + 2) / 4) * 100000L;	/* convert to Hz    */
+
+#else /* CONFIG_8xx_GCLK_FREQ */
+
+	/*
+         * If for some reason measuring the gclk frequency won't
+         * work, we return the hardwired value.
+         * (For example, the cogent CMA286-60 CPU module has no
+         * separate oscillator for PITRTCLK)
+	 */
+
+	gd->cpu_clk = CONFIG_8xx_GCLK_FREQ;
+
+#endif /* CONFIG_8xx_GCLK_FREQ */
+
+	if ((immr->im_clkrst.car_sccr & SCCR_EBDF11) == 0) {
+		/* No Bus Divider active */
+		gd->bus_clk = gd->cpu_clk;
+	} else {
+		/* The MPC8xx has only one BDF: half clock speed */
+		gd->bus_clk = gd->cpu_clk / 2;
+	}
+
+	return (0);
+}
+
+/* ------------------------------------------------------------------------- */
diff --git a/cpu/mpc8xx/wlkbd.c b/cpu/mpc8xx/wlkbd.c
new file mode 100644
index 0000000000..13009e2641
--- /dev/null
+++ b/cpu/mpc8xx/wlkbd.c
@@ -0,0 +1,36 @@
+/*
+ * (C) Copyright 2000
+ * Paolo Scaffardi, AIRVENT SAM s.p.a - RIMINI(ITALY), arsenio@tin.it
+ *
+ * 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 <common.h>
+#include <config.h>
+
+#ifdef CONFIG_WL_4PPM_KEYBOARD
+
+/* WIP: Wireless keyboard on SMC
+ */
+int	drv_wlkbd_init (void)
+{
+    return 0 ;
+}
+
+#endif	/* CONFIG_WL_4PPM_KEYBOARD */