[PATCH] Add support for AMCC Taishan PPC440GX eval board

Signed-off-by: Stefan Roese <sr@denx.de>

1 files changed, 331 insertions, 0 deletions

diff --git a/board/amcc/taishan/taishan.c b/board/amcc/taishan/taishan.c
new file mode 100644
index 0000000..7e02371
--- /dev/null
+++ b/board/amcc/taishan/taishan.c
@@ -0,0 +1,331 @@
+/*
+ *  Copyright (C) 2004 PaulReynolds@lhsolutions.com
+ *
+ * (C) Copyright 2007
+ * Stefan Roese, DENX Software Engineering, sr@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 <asm/processor.h>
+#include <spd_sdram.h>
+#include <ppc4xx_enet.h>
+
+#ifdef CFG_INIT_SHOW_RESET_REG
+void show_reset_reg(void);
+#endif
+
+int lcd_init(void);
+
+int board_early_init_f (void)
+{
+	unsigned long reg;
+	volatile unsigned int *GpioOdr;
+	volatile unsigned int *GpioTcr;
+	volatile unsigned int *GpioOr;
+
+	/*-------------------------------------------------------------------------+
+	  | Initialize EBC CONFIG
+	  +-------------------------------------------------------------------------*/
+	mtebc(xbcfg, EBC_CFG_LE_UNLOCK |
+	      EBC_CFG_PTD_ENABLE | EBC_CFG_RTC_64PERCLK |
+	      EBC_CFG_ATC_PREVIOUS | EBC_CFG_DTC_PREVIOUS |
+	      EBC_CFG_CTC_PREVIOUS | EBC_CFG_EMC_DEFAULT |
+	      EBC_CFG_PME_DISABLE | EBC_CFG_PR_32);
+
+	/*-------------------------------------------------------------------------+
+	  | 64MB FLASH. Initialize bank 0 with default values.
+	  +-------------------------------------------------------------------------*/
+	mtebc(pb0ap, EBC_BXAP_BME_DISABLED|EBC_BXAP_TWT_ENCODE(15) |
+	      EBC_BXAP_BCE_DISABLE |
+	      EBC_BXAP_CSN_ENCODE(1) | EBC_BXAP_OEN_ENCODE(1) |
+	      EBC_BXAP_WBN_ENCODE(1) | EBC_BXAP_WBF_ENCODE(1) |
+	      EBC_BXAP_TH_ENCODE(3) | EBC_BXAP_RE_DISABLED |
+	      EBC_BXAP_BEM_WRITEONLY |
+	      EBC_BXAP_PEN_DISABLED);
+	mtebc(pb0cr, EBC_BXCR_BAS_ENCODE(CFG_FLASH_BASE) |
+	      EBC_BXCR_BS_64MB | EBC_BXCR_BU_RW|EBC_BXCR_BW_32BIT);
+
+	/*-------------------------------------------------------------------------+
+	  | FPGA. Initialize bank 1 with default values.
+	  +-------------------------------------------------------------------------*/
+	mtebc(pb1ap, EBC_BXAP_BME_DISABLED|EBC_BXAP_TWT_ENCODE(5) |
+	      EBC_BXAP_BCE_DISABLE |
+	      EBC_BXAP_CSN_ENCODE(1) | EBC_BXAP_OEN_ENCODE(1) |
+	      EBC_BXAP_WBN_ENCODE(1) | EBC_BXAP_WBF_ENCODE(1) |
+	      EBC_BXAP_TH_ENCODE(3) | EBC_BXAP_RE_DISABLED |
+	      EBC_BXAP_BEM_WRITEONLY |
+	      EBC_BXAP_PEN_DISABLED);
+	mtebc(pb1cr, EBC_BXCR_BAS_ENCODE(0x41000000) |
+	      EBC_BXCR_BS_1MB | EBC_BXCR_BU_RW | EBC_BXCR_BW_8BIT);
+
+	/*-------------------------------------------------------------------------+
+	  | LCM. Initialize bank 2 with default values.
+	  +-------------------------------------------------------------------------*/
+	mtebc(pb2ap, EBC_BXAP_BME_DISABLED | EBC_BXAP_TWT_ENCODE(64) |
+	      EBC_BXAP_BCE_DISABLE |
+	      EBC_BXAP_CSN_ENCODE(3) | EBC_BXAP_OEN_ENCODE(3) |
+	      EBC_BXAP_WBN_ENCODE(3) | EBC_BXAP_WBF_ENCODE(3) |
+	      EBC_BXAP_TH_ENCODE(7) | EBC_BXAP_RE_DISABLED |
+	      EBC_BXAP_BEM_WRITEONLY |
+	      EBC_BXAP_PEN_DISABLED);
+	mtebc(pb2cr, EBC_BXCR_BAS_ENCODE(0x42000000) |
+	      EBC_BXCR_BS_1MB | EBC_BXCR_BU_RW|EBC_BXCR_BW_8BIT);
+
+	/*-------------------------------------------------------------------------+
+	  | TMP. Initialize bank 3 with default values.
+	  +-------------------------------------------------------------------------*/
+	mtebc(pb3ap, EBC_BXAP_BME_DISABLED | EBC_BXAP_TWT_ENCODE(128) |
+	      EBC_BXAP_BCE_DISABLE |
+	      EBC_BXAP_CSN_ENCODE(3) | EBC_BXAP_OEN_ENCODE(3) |
+	      EBC_BXAP_WBN_ENCODE(3) | EBC_BXAP_WBF_ENCODE(3) |
+	      EBC_BXAP_TH_ENCODE(7) | EBC_BXAP_RE_DISABLED |
+	      EBC_BXAP_BEM_WRITEONLY |
+	      EBC_BXAP_PEN_DISABLED);
+	mtebc(pb3cr, EBC_BXCR_BAS_ENCODE(0x48000000) |
+	      EBC_BXCR_BS_64MB | EBC_BXCR_BU_RW | EBC_BXCR_BW_32BIT);
+
+	/*-------------------------------------------------------------------------+
+	  | Connector 4~7. Initialize bank 3~ 7 with default values.
+	  +-------------------------------------------------------------------------*/
+	mtebc(pb4ap,0);
+	mtebc(pb4cr,0);
+	mtebc(pb5ap,0);
+	mtebc(pb5cr,0);
+	mtebc(pb6ap,0);
+	mtebc(pb6cr,0);
+	mtebc(pb7ap,0);
+	mtebc(pb7cr,0);
+
+	/*--------------------------------------------------------------------
+	 * Setup the interrupt controller polarities, triggers, etc.
+	 *-------------------------------------------------------------------*/
+	mtdcr (uic0sr, 0xffffffff);	/* clear all */
+	mtdcr (uic0er, 0x00000000);	/* disable all */
+	mtdcr (uic0cr, 0x00000009);	/* SMI & UIC1 crit are critical */
+	mtdcr (uic0pr, 0xfffffe13);	/* per ref-board manual */
+	mtdcr (uic0tr, 0x01c00008);	/* per ref-board manual */
+	mtdcr (uic0vr, 0x00000001);	/* int31 highest, base=0x000 */
+	mtdcr (uic0sr, 0xffffffff);	/* clear all */
+
+	mtdcr (uic1sr, 0xffffffff);	/* clear all */
+	mtdcr (uic1er, 0x00000000);	/* disable all */
+	mtdcr (uic1cr, 0x00000000);	/* all non-critical */
+	mtdcr (uic1pr, 0xffffe0ff);	/* per ref-board manual */
+	mtdcr (uic1tr, 0x00ffc000);	/* per ref-board manual */
+	mtdcr (uic1vr, 0x00000001);	/* int31 highest, base=0x000 */
+	mtdcr (uic1sr, 0xffffffff);	/* clear all */
+
+	mtdcr (uic2sr, 0xffffffff);	/* clear all */
+	mtdcr (uic2er, 0x00000000);	/* disable all */
+	mtdcr (uic2cr, 0x00000000);	/* all non-critical */
+	mtdcr (uic2pr, 0xffffffff);	/* per ref-board manual */
+	mtdcr (uic2tr, 0x00ff8c0f);	/* per ref-board manual */
+	mtdcr (uic2vr, 0x00000001);	/* int31 highest, base=0x000 */
+	mtdcr (uic2sr, 0xffffffff);	/* clear all */
+
+	mtdcr (uicb0sr, 0xfc000000);	/* clear all */
+	mtdcr (uicb0er, 0x00000000);	/* disable all */
+	mtdcr (uicb0cr, 0x00000000);	/* all non-critical */
+	mtdcr (uicb0pr, 0xfc000000);	/* */
+	mtdcr (uicb0tr, 0x00000000);	/* */
+	mtdcr (uicb0vr, 0x00000001);	/* */
+
+	/* Enable two GPIO 10~11 and TraceA signal */
+	mfsdr(sdr_pfc0,reg);
+	reg |= 0x00300000;
+	mtsdr(sdr_pfc0,reg);
+
+	mfsdr(sdr_pfc1,reg);
+	reg |= 0x00100000;
+	mtsdr(sdr_pfc1,reg);
+
+	/* Set GPIO 10 and 11 as output */
+	GpioOdr	= (volatile unsigned int*)(CFG_PERIPHERAL_BASE+0x718);
+	GpioTcr = (volatile unsigned int*)(CFG_PERIPHERAL_BASE+0x704);
+	GpioOr  = (volatile unsigned int*)(CFG_PERIPHERAL_BASE+0x700);
+
+	*GpioOdr &= ~(0x00300000);
+	*GpioTcr |= 0x00300000;
+        *GpioOr  |= 0x00300000;
+
+	return 0;
+}
+
+int misc_init_r(void)
+{
+	lcd_init();
+
+	return 0;
+}
+
+int checkboard (void)
+{
+	char *s = getenv ("serial#");
+
+	printf ("Board: Taishan - AMCC PPC440GX Evaluation Board");
+	if (s != NULL) {
+		puts (", serial# ");
+		puts (s);
+	}
+	putc ('\n');
+
+#ifdef CFG_INIT_SHOW_RESET_REG
+	show_reset_reg();
+#endif
+
+	return (0);
+}
+
+#if defined(CFG_DRAM_TEST)
+int testdram (void)
+{
+	uint *pstart = (uint *) 0x04000000;
+	uint *pend = (uint *) 0x0fc00000;
+	uint *p;
+
+	for (p = pstart; p < pend; p++)
+		*p = 0xaaaaaaaa;
+
+	for (p = pstart; p < pend; p++) {
+		if (*p != 0xaaaaaaaa) {
+			printf ("SDRAM test fails at: %08x\n", (uint) p);
+			return 1;
+		}
+	}
+
+	for (p = pstart; p < pend; p++)
+		*p = 0x55555555;
+
+	for (p = pstart; p < pend; p++) {
+		if (*p != 0x55555555) {
+			printf ("SDRAM test fails at: %08x\n", (uint) p);
+			return 1;
+		}
+	}
+	return 0;
+}
+#endif
+
+/*************************************************************************
+ *  pci_pre_init
+ *
+ *  This routine is called just prior to registering the hose and gives
+ *  the board the opportunity to check things. Returning a value of zero
+ *  indicates that things are bad & PCI initialization should be aborted.
+ *
+ *	Different boards may wish to customize the pci controller structure
+ *	(add regions, override default access routines, etc) or perform
+ *	certain pre-initialization actions.
+ *
+ ************************************************************************/
+#if defined(CONFIG_PCI) && defined(CFG_PCI_PRE_INIT)
+int pci_pre_init(struct pci_controller * hose )
+{
+	unsigned long strap;
+
+	/*--------------------------------------------------------------------------+
+	 *	The ocotea board is always configured as the host & requires the
+	 *	PCI arbiter to be enabled.
+	 *--------------------------------------------------------------------------*/
+	mfsdr(sdr_sdstp1, strap);
+	if( (strap & SDR0_SDSTP1_PAE_MASK) == 0 ){
+		printf("PCI: SDR0_STRP1[%08lX] - PCI Arbiter disabled.\n",strap);
+		return 0;
+	}
+
+	return 1;
+}
+#endif /* defined(CONFIG_PCI) && defined(CFG_PCI_PRE_INIT) */
+
+/*************************************************************************
+ *  pci_target_init
+ *
+ *	The bootstrap configuration provides default settings for the pci
+ *	inbound map (PIM). But the bootstrap config choices are limited and
+ *	may not be sufficient for a given board.
+ *
+ ************************************************************************/
+#if defined(CONFIG_PCI) && defined(CFG_PCI_TARGET_INIT)
+void pci_target_init(struct pci_controller * hose )
+{
+	DECLARE_GLOBAL_DATA_PTR;
+
+	/*--------------------------------------------------------------------------+
+	 * Disable everything
+	 *--------------------------------------------------------------------------*/
+	out32r( PCIX0_PIM0SA, 0 ); /* disable */
+	out32r( PCIX0_PIM1SA, 0 ); /* disable */
+	out32r( PCIX0_PIM2SA, 0 ); /* disable */
+	out32r( PCIX0_EROMBA, 0 ); /* disable expansion rom */
+
+	/*--------------------------------------------------------------------------+
+	 * Map all of SDRAM to PCI address 0x0000_0000. Note that the 440 strapping
+	 * options to not support sizes such as 128/256 MB.
+	 *--------------------------------------------------------------------------*/
+	out32r( PCIX0_PIM0LAL, CFG_SDRAM_BASE );
+	out32r( PCIX0_PIM0LAH, 0 );
+	out32r( PCIX0_PIM0SA, ~(gd->ram_size - 1) | 1 );
+
+	out32r( PCIX0_BAR0, 0 );
+
+	/*--------------------------------------------------------------------------+
+	 * Program the board's subsystem id/vendor id
+	 *--------------------------------------------------------------------------*/
+	out16r( PCIX0_SBSYSVID, CFG_PCI_SUBSYS_VENDORID );
+	out16r( PCIX0_SBSYSID, CFG_PCI_SUBSYS_DEVICEID );
+
+	out16r( PCIX0_CMD, in16r(PCIX0_CMD) | PCI_COMMAND_MEMORY );
+}
+#endif /* defined(CONFIG_PCI) && defined(CFG_PCI_TARGET_INIT) */
+
+/*************************************************************************
+ *  is_pci_host
+ *
+ *	This routine is called to determine if a pci scan should be
+ *	performed. With various hardware environments (especially cPCI and
+ *	PPMC) it's insufficient to depend on the state of the arbiter enable
+ *	bit in the strap register, or generic host/adapter assumptions.
+ *
+ *	Rather than hard-code a bad assumption in the general 440 code, the
+ *	440 pci code requires the board to decide at runtime.
+ *
+ *	Return 0 for adapter mode, non-zero for host (monarch) mode.
+ *
+ *
+ ************************************************************************/
+#if defined(CONFIG_PCI)
+int is_pci_host(struct pci_controller *hose)
+{
+	/* The ocotea board is always configured as host. */
+	return(1);
+}
+#endif /* defined(CONFIG_PCI) */
+
+#ifdef CONFIG_POST
+/*
+ * Returns 1 if keys pressed to start the power-on long-running tests
+ * Called from board_init_f().
+ */
+int post_hotkeys_pressed(void)
+{
+	return (ctrlc());
+}
+#endif