Move arch/ppc to arch/powerpc

As discussed on the list, move "arch/ppc" to "arch/powerpc" to
better match the Linux directory structure.

Please note that this patch also changes the "ppc" target in
MAKEALL to "powerpc" to match this new infrastructure. But "ppc"
is kept as an alias for now, to not break compatibility with
scripts using this name.

Signed-off-by: Stefan Roese <sr@denx.de>
Acked-by: Wolfgang Denk <wd@denx.de>
Acked-by: Detlev Zundel <dzu@denx.de>
Acked-by: Kim Phillips <kim.phillips@freescale.com>
Cc: Peter Tyser <ptyser@xes-inc.com>
Cc: Anatolij Gustschin <agust@denx.de>

1 files changed, 405 insertions, 0 deletions

diff --git a/arch/powerpc/cpu/mpc85xx/cpu_init.c b/arch/powerpc/cpu/mpc85xx/cpu_init.c
new file mode 100644
index 0000000..e0126d3
--- /dev/null
+++ b/arch/powerpc/cpu/mpc85xx/cpu_init.c
@@ -0,0 +1,405 @@
+/*
+ * Copyright 2007-2009 Freescale Semiconductor, Inc.
+ *
+ * (C) Copyright 2003 Motorola Inc.
+ * Modified by Xianghua Xiao, X.Xiao@motorola.com
+ *
+ * (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 <watchdog.h>
+#include <asm/processor.h>
+#include <ioports.h>
+#include <asm/io.h>
+#include <asm/mmu.h>
+#include <asm/fsl_law.h>
+#include "mp.h"
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#ifdef CONFIG_MPC8536
+extern void fsl_serdes_init(void);
+#endif
+
+#ifdef CONFIG_QE
+extern qe_iop_conf_t qe_iop_conf_tab[];
+extern void qe_config_iopin(u8 port, u8 pin, int dir,
+				int open_drain, int assign);
+extern void qe_init(uint qe_base);
+extern void qe_reset(void);
+
+static void config_qe_ioports(void)
+{
+	u8      port, pin;
+	int     dir, open_drain, assign;
+	int     i;
+
+	for (i = 0; qe_iop_conf_tab[i].assign != QE_IOP_TAB_END; i++) {
+		port		= qe_iop_conf_tab[i].port;
+		pin		= qe_iop_conf_tab[i].pin;
+		dir		= qe_iop_conf_tab[i].dir;
+		open_drain	= qe_iop_conf_tab[i].open_drain;
+		assign		= qe_iop_conf_tab[i].assign;
+		qe_config_iopin(port, pin, dir, open_drain, assign);
+	}
+}
+#endif
+
+#ifdef CONFIG_CPM2
+void config_8560_ioports (volatile ccsr_cpm_t * cpm)
+{
+	int portnum;
+
+	for (portnum = 0; portnum < 4; portnum++) {
+		uint pmsk = 0,
+		     ppar = 0,
+		     psor = 0,
+		     pdir = 0,
+		     podr = 0,
+		     pdat = 0;
+		iop_conf_t *iopc = (iop_conf_t *) & iop_conf_tab[portnum][0];
+		iop_conf_t *eiopc = iopc + 32;
+		uint msk = 1;
+
+		/*
+		 * NOTE:
+		 * index 0 refers to pin 31,
+		 * index 31 refers to pin 0
+		 */
+		while (iopc < eiopc) {
+			if (iopc->conf) {
+				pmsk |= msk;
+				if (iopc->ppar)
+					ppar |= msk;
+				if (iopc->psor)
+					psor |= msk;
+				if (iopc->pdir)
+					pdir |= msk;
+				if (iopc->podr)
+					podr |= msk;
+				if (iopc->pdat)
+					pdat |= msk;
+			}
+
+			msk <<= 1;
+			iopc++;
+		}
+
+		if (pmsk != 0) {
+			volatile ioport_t *iop = ioport_addr (cpm, portnum);
+			uint tpmsk = ~pmsk;
+
+			/*
+			 * the (somewhat confused) paragraph at the
+			 * bottom of page 35-5 warns that there might
+			 * be "unknown behaviour" when programming
+			 * PSORx and PDIRx, if PPARx = 1, so I
+			 * decided this meant I had to disable the
+			 * dedicated function first, and enable it
+			 * last.
+			 */
+			iop->ppar &= tpmsk;
+			iop->psor = (iop->psor & tpmsk) | psor;
+			iop->podr = (iop->podr & tpmsk) | podr;
+			iop->pdat = (iop->pdat & tpmsk) | pdat;
+			iop->pdir = (iop->pdir & tpmsk) | pdir;
+			iop->ppar |= ppar;
+		}
+	}
+}
+#endif
+
+/*
+ * Breathe some life into the CPU...
+ *
+ * Set up the memory map
+ * initialize a bunch of registers
+ */
+
+#ifdef CONFIG_FSL_CORENET
+static void corenet_tb_init(void)
+{
+	volatile ccsr_rcpm_t *rcpm =
+		(void *)(CONFIG_SYS_FSL_CORENET_RCPM_ADDR);
+	volatile ccsr_pic_t *pic =
+		(void *)(CONFIG_SYS_MPC85xx_PIC_ADDR);
+	u32 whoami = in_be32(&pic->whoami);
+
+	/* Enable the timebase register for this core */
+	out_be32(&rcpm->ctbenrl, (1 << whoami));
+}
+#endif
+
+void cpu_init_f (void)
+{
+	volatile ccsr_lbc_t *memctl = (void *)(CONFIG_SYS_MPC85xx_LBC_ADDR);
+	extern void m8560_cpm_reset (void);
+#ifdef CONFIG_MPC8548
+	ccsr_local_ecm_t *ecm = (void *)(CONFIG_SYS_MPC85xx_ECM_ADDR);
+	uint svr = get_svr();
+
+	/*
+	 * CPU2 errata workaround: A core hang possible while executing
+	 * a msync instruction and a snoopable transaction from an I/O
+	 * master tagged to make quick forward progress is present.
+	 * Fixed in silicon rev 2.1.
+	 */
+	if ((SVR_MAJ(svr) == 1) || ((SVR_MAJ(svr) == 2 && SVR_MIN(svr) == 0x0)))
+		out_be32(&ecm->eebpcr, in_be32(&ecm->eebpcr) | (1 << 16));
+#endif
+
+	disable_tlb(14);
+	disable_tlb(15);
+
+#ifdef CONFIG_CPM2
+	config_8560_ioports((ccsr_cpm_t *)CONFIG_SYS_MPC85xx_CPM_ADDR);
+#endif
+
+	/* Map banks 0 and 1 to the FLASH banks 0 and 1 at preliminary
+	 * addresses - these have to be modified later when FLASH size
+	 * has been determined
+	 */
+#if defined(CONFIG_SYS_OR0_REMAP)
+	memctl->or0 = CONFIG_SYS_OR0_REMAP;
+#endif
+#if defined(CONFIG_SYS_OR1_REMAP)
+	memctl->or1 = CONFIG_SYS_OR1_REMAP;
+#endif
+
+	/* now restrict to preliminary range */
+	/* if cs1 is already set via debugger, leave cs0/cs1 alone */
+	if (! memctl->br1 & 1) {
+#if defined(CONFIG_SYS_BR0_PRELIM) && defined(CONFIG_SYS_OR0_PRELIM)
+		memctl->br0 = CONFIG_SYS_BR0_PRELIM;
+		memctl->or0 = CONFIG_SYS_OR0_PRELIM;
+#endif
+
+#if defined(CONFIG_SYS_BR1_PRELIM) && defined(CONFIG_SYS_OR1_PRELIM)
+		memctl->or1 = CONFIG_SYS_OR1_PRELIM;
+		memctl->br1 = CONFIG_SYS_BR1_PRELIM;
+#endif
+	}
+
+#if defined(CONFIG_SYS_BR2_PRELIM) && defined(CONFIG_SYS_OR2_PRELIM)
+	memctl->or2 = CONFIG_SYS_OR2_PRELIM;
+	memctl->br2 = CONFIG_SYS_BR2_PRELIM;
+#endif
+
+#if defined(CONFIG_SYS_BR3_PRELIM) && defined(CONFIG_SYS_OR3_PRELIM)
+	memctl->or3 = CONFIG_SYS_OR3_PRELIM;
+	memctl->br3 = CONFIG_SYS_BR3_PRELIM;
+#endif
+
+#if defined(CONFIG_SYS_BR4_PRELIM) && defined(CONFIG_SYS_OR4_PRELIM)
+	memctl->or4 = CONFIG_SYS_OR4_PRELIM;
+	memctl->br4 = CONFIG_SYS_BR4_PRELIM;
+#endif
+
+#if defined(CONFIG_SYS_BR5_PRELIM) && defined(CONFIG_SYS_OR5_PRELIM)
+	memctl->or5 = CONFIG_SYS_OR5_PRELIM;
+	memctl->br5 = CONFIG_SYS_BR5_PRELIM;
+#endif
+
+#if defined(CONFIG_SYS_BR6_PRELIM) && defined(CONFIG_SYS_OR6_PRELIM)
+	memctl->or6 = CONFIG_SYS_OR6_PRELIM;
+	memctl->br6 = CONFIG_SYS_BR6_PRELIM;
+#endif
+
+#if defined(CONFIG_SYS_BR7_PRELIM) && defined(CONFIG_SYS_OR7_PRELIM)
+	memctl->or7 = CONFIG_SYS_OR7_PRELIM;
+	memctl->br7 = CONFIG_SYS_BR7_PRELIM;
+#endif
+
+#if defined(CONFIG_CPM2)
+	m8560_cpm_reset();
+#endif
+#ifdef CONFIG_QE
+	/* Config QE ioports */
+	config_qe_ioports();
+#endif
+#if defined(CONFIG_MPC8536)
+	fsl_serdes_init();
+#endif
+#if defined(CONFIG_FSL_DMA)
+	dma_init();
+#endif
+#ifdef CONFIG_FSL_CORENET
+	corenet_tb_init();
+#endif
+	init_used_tlb_cams();
+}
+
+
+/*
+ * Initialize L2 as cache.
+ *
+ * The newer 8548, etc, parts have twice as much cache, but
+ * use the same bit-encoding as the older 8555, etc, parts.
+ *
+ */
+
+int cpu_init_r(void)
+{
+	puts ("L2:    ");
+
+#if defined(CONFIG_L2_CACHE)
+	volatile ccsr_l2cache_t *l2cache = (void *)CONFIG_SYS_MPC85xx_L2_ADDR;
+	volatile uint cache_ctl;
+	uint svr, ver;
+	uint l2srbar;
+	u32 l2siz_field;
+
+	svr = get_svr();
+	ver = SVR_SOC_VER(svr);
+
+	asm("msync;isync");
+	cache_ctl = l2cache->l2ctl;
+
+#if defined(CONFIG_SYS_RAMBOOT) && defined(CONFIG_SYS_INIT_L2_ADDR)
+	if (cache_ctl & MPC85xx_L2CTL_L2E) {
+		/* Clear L2 SRAM memory-mapped base address */
+		out_be32(&l2cache->l2srbar0, 0x0);
+		out_be32(&l2cache->l2srbar1, 0x0);
+
+		/* set MBECCDIS=0, SBECCDIS=0 */
+		clrbits_be32(&l2cache->l2errdis,
+				(MPC85xx_L2ERRDIS_MBECC |
+				 MPC85xx_L2ERRDIS_SBECC));
+
+		/* set L2E=0, L2SRAM=0 */
+		clrbits_be32(&l2cache->l2ctl,
+				(MPC85xx_L2CTL_L2E |
+				 MPC85xx_L2CTL_L2SRAM_ENTIRE));
+	}
+#endif
+
+	l2siz_field = (cache_ctl >> 28) & 0x3;
+
+	switch (l2siz_field) {
+	case 0x0:
+		printf(" unknown size (0x%08x)\n", cache_ctl);
+		return -1;
+		break;
+	case 0x1:
+		if (ver == SVR_8540 || ver == SVR_8560   ||
+		    ver == SVR_8541 || ver == SVR_8541_E ||
+		    ver == SVR_8555 || ver == SVR_8555_E) {
+			puts("128 KB ");
+			/* set L2E=1, L2I=1, & L2BLKSZ=1 (128 Kbyte) */
+			cache_ctl = 0xc4000000;
+		} else {
+			puts("256 KB ");
+			cache_ctl = 0xc0000000; /* set L2E=1, L2I=1, & L2SRAM=0 */
+		}
+		break;
+	case 0x2:
+		if (ver == SVR_8540 || ver == SVR_8560   ||
+		    ver == SVR_8541 || ver == SVR_8541_E ||
+		    ver == SVR_8555 || ver == SVR_8555_E) {
+			puts("256 KB ");
+			/* set L2E=1, L2I=1, & L2BLKSZ=2 (256 Kbyte) */
+			cache_ctl = 0xc8000000;
+		} else {
+			puts ("512 KB ");
+			/* set L2E=1, L2I=1, & L2SRAM=0 */
+			cache_ctl = 0xc0000000;
+		}
+		break;
+	case 0x3:
+		puts("1024 KB ");
+		/* set L2E=1, L2I=1, & L2SRAM=0 */
+		cache_ctl = 0xc0000000;
+		break;
+	}
+
+	if (l2cache->l2ctl & MPC85xx_L2CTL_L2E) {
+		puts("already enabled");
+		l2srbar = l2cache->l2srbar0;
+#ifdef CONFIG_SYS_INIT_L2_ADDR
+		if (l2cache->l2ctl & MPC85xx_L2CTL_L2SRAM_ENTIRE
+				&& l2srbar >= CONFIG_SYS_FLASH_BASE) {
+			l2srbar = CONFIG_SYS_INIT_L2_ADDR;
+			l2cache->l2srbar0 = l2srbar;
+			printf("moving to 0x%08x", CONFIG_SYS_INIT_L2_ADDR);
+		}
+#endif /* CONFIG_SYS_INIT_L2_ADDR */
+		puts("\n");
+	} else {
+		asm("msync;isync");
+		l2cache->l2ctl = cache_ctl; /* invalidate & enable */
+		asm("msync;isync");
+		puts("enabled\n");
+	}
+#elif defined(CONFIG_BACKSIDE_L2_CACHE)
+	u32 l2cfg0 = mfspr(SPRN_L2CFG0);
+
+	/* invalidate the L2 cache */
+	mtspr(SPRN_L2CSR0, (L2CSR0_L2FI|L2CSR0_L2LFC));
+	while (mfspr(SPRN_L2CSR0) & (L2CSR0_L2FI|L2CSR0_L2LFC))
+		;
+
+#ifdef CONFIG_SYS_CACHE_STASHING
+	/* set stash id to (coreID) * 2 + 32 + L2 (1) */
+	mtspr(SPRN_L2CSR1, (32 + 1));
+#endif
+
+	/* enable the cache */
+	mtspr(SPRN_L2CSR0, CONFIG_SYS_INIT_L2CSR0);
+
+	if (CONFIG_SYS_INIT_L2CSR0 & L2CSR0_L2E) {
+		while (!(mfspr(SPRN_L2CSR0) & L2CSR0_L2E))
+			;
+		printf("%d KB enabled\n", (l2cfg0 & 0x3fff) * 64);
+	}
+#else
+	puts("disabled\n");
+#endif
+#ifdef CONFIG_QE
+	uint qe_base = CONFIG_SYS_IMMR + 0x00080000; /* QE immr base */
+	qe_init(qe_base);
+	qe_reset();
+#endif
+
+#if defined(CONFIG_MP)
+	setup_mp();
+#endif
+	return 0;
+}
+
+extern void setup_ivors(void);
+
+void arch_preboot_os(void)
+{
+	u32 msr;
+
+	/*
+	 * We are changing interrupt offsets and are about to boot the OS so
+	 * we need to make sure we disable all async interrupts. EE is already
+	 * disabled by the time we get called.
+	 */
+	msr = mfmsr();
+	msr &= ~(MSR_ME|MSR_CE|MSR_DE);
+	mtmsr(msr);
+
+	setup_ivors();
+}