Major cleanup for AMCC PPC4xx eval boards.

Patch by Stefan Roese, 01 Aug 2005

1 files changed, 439 insertions, 0 deletions

diff --git a/board/amcc/bamboo/bamboo.c b/board/amcc/bamboo/bamboo.c
new file mode 100644
index 0000000..7b2d3f4
--- /dev/null
+++ b/board/amcc/bamboo/bamboo.c
@@ -0,0 +1,439 @@
+/*
+ * (C) Copyright 2005
+ * 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>
+
+int board_early_init_f(void)
+{
+	register uint reg;
+
+	/*--------------------------------------------------------------------
+	 * Setup the external bus controller/chip selects
+	 *-------------------------------------------------------------------*/
+	mtdcr(ebccfga, xbcfg);
+	reg = mfdcr(ebccfgd);
+	mtdcr(ebccfgd, reg | 0x04000000);	/* Set ATC */
+
+#if 0 /* test-only */
+	mtebc(pb0ap, 0x03017300);	/* FLASH/SRAM */
+	mtebc(pb0cr, 0xfe0ba000);	/* BAS=0xfe0 32MB r/w 16-bit */
+
+	mtebc(pb1ap, 0x00000000);
+	mtebc(pb1cr, 0x00000000);
+
+	mtebc(pb2ap, 0x04814500);
+	/*CPLD*/ mtebc(pb2cr, 0x80018000);	/*BAS=0x800 1MB r/w 8-bit */
+#else
+	mtebc(pb0ap, 0x04055200);	/* FLASH/SRAM */
+	mtebc(pb0cr, 0xfff18000);	/* BAS=0xfe0 1MB r/w 8-bit */
+#endif
+
+	mtebc(pb3ap, 0x00000000);
+	mtebc(pb3cr, 0x00000000);
+
+	mtebc(pb4ap, 0x00000000);
+	mtebc(pb4cr, 0x00000000);
+
+	mtebc(pb5ap, 0x00000000);
+	mtebc(pb5cr, 0x00000000);
+
+	/*--------------------------------------------------------------------
+	 * Setup the interrupt controller polarities, triggers, etc.
+	 *-------------------------------------------------------------------*/
+	mtdcr(uic0sr, 0xffffffff);	/* clear all */
+	mtdcr(uic0er, 0x00000000);	/* disable all */
+	mtdcr(uic0cr, 0x00000009);	/* ATI & 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 */
+
+	/*--------------------------------------------------------------------
+	 * Setup the GPIO pins
+	 *-------------------------------------------------------------------*/
+	/*CPLD cs */
+	/*setup Address lines for flash sizes larger than 16Meg. */
+	out32(GPIO0_OSRL, in32(GPIO0_OSRL) | 0x40010000);
+	out32(GPIO0_TSRL, in32(GPIO0_TSRL) | 0x40010000);
+	out32(GPIO0_ISR1L, in32(GPIO0_ISR1L) | 0x40000000);
+
+	/*setup emac */
+	out32(GPIO0_TCR, in32(GPIO0_TCR) | 0xC080);
+	out32(GPIO0_TSRL, in32(GPIO0_TSRL) | 0x40);
+	out32(GPIO0_ISR1L, in32(GPIO0_ISR1L) | 0x55);
+	out32(GPIO0_OSRH, in32(GPIO0_OSRH) | 0x50004000);
+	out32(GPIO0_ISR1H, in32(GPIO0_ISR1H) | 0x00440000);
+
+	/*UART1 */
+	out32(GPIO1_TCR, in32(GPIO1_TCR) | 0x02000000);
+	out32(GPIO1_OSRL, in32(GPIO1_OSRL) | 0x00080000);
+	out32(GPIO1_ISR2L, in32(GPIO1_ISR2L) | 0x00010000);
+
+	/*setup USB 2.0 */
+	out32(GPIO1_TCR, in32(GPIO1_TCR) | 0xc0000000);
+	out32(GPIO1_OSRL, in32(GPIO1_OSRL) | 0x50000000);
+	out32(GPIO0_TCR, in32(GPIO0_TCR) | 0xf);
+	out32(GPIO0_OSRH, in32(GPIO0_OSRH) | 0xaa);
+	out32(GPIO0_ISR2H, in32(GPIO0_ISR2H) | 0x00000500);
+
+	/*--------------------------------------------------------------------
+	 * Setup other serial configuration
+	 *-------------------------------------------------------------------*/
+	mfsdr(sdr_pci0, reg);
+	mtsdr(sdr_pci0, 0x80000000 | reg);	/* PCI arbiter enabled */
+	mtsdr(sdr_pfc0, 0x00003e00);	/* Pin function */
+	mtsdr(sdr_pfc1, 0x00048000);	/* Pin function: UART0 has 4 pins */
+
+#if 0 /* test-only */
+	/*clear tmrclk divisor */
+	*(unsigned char *)(CFG_BCSR_BASE | 0x04) = 0x00;
+
+	/*enable ethernet */
+	*(unsigned char *)(CFG_BCSR_BASE | 0x08) = 0xf0;
+
+	/*enable usb 1.1 fs device and remove usb 2.0 reset */
+	*(unsigned char *)(CFG_BCSR_BASE | 0x09) = 0x00;
+
+	/*get rid of flash write protect */
+	*(unsigned char *)(CFG_BCSR_BASE | 0x07) = 0x40;
+#endif
+
+	return 0;
+}
+
+int checkboard(void)
+{
+	sys_info_t sysinfo;
+	unsigned char *s = getenv("serial#");
+
+	get_sys_info(&sysinfo);
+
+	printf("Board: Bamboo - AMCC PPC440EP Evaluation Board");
+	if (s != NULL) {
+		puts(", serial# ");
+		puts(s);
+	}
+	putc('\n');
+
+	printf("\tVCO: %lu MHz\n", sysinfo.freqVCOMhz / 1000000);
+	printf("\tCPU: %lu MHz\n", sysinfo.freqProcessor / 1000000);
+	printf("\tPLB: %lu MHz\n", sysinfo.freqPLB / 1000000);
+	printf("\tOPB: %lu MHz\n", sysinfo.freqOPB / 1000000);
+	printf("\tEPB: %lu MHz\n", sysinfo.freqEPB / 1000000);
+	return (0);
+}
+
+/*************************************************************************
+ *  sdram_init -- doesn't use serial presence detect.
+ *
+ *  Assumes:    256 MB, ECC, non-registered
+ *              PLB @ 133 MHz
+ *
+ ************************************************************************/
+void sdram_init(void)
+{
+	register uint reg;
+
+	/*--------------------------------------------------------------------
+	 * Setup some default
+	 *------------------------------------------------------------------*/
+	mtsdram(mem_uabba, 0x00000000);	/* ubba=0 (default)             */
+	mtsdram(mem_slio, 0x00000000);	/* rdre=0 wrre=0 rarw=0         */
+	mtsdram(mem_devopt, 0x00000000);	/* dll=0 ds=0 (normal)          */
+	mtsdram(mem_clktr, 0x40000000);	/* ?? */
+	mtsdram(mem_wddctr, 0x40000000);	/* ?? */
+
+	/*clear this first, if the DDR is enabled by a debugger
+	   then you can not make changes. */
+	mtsdram(mem_cfg0, 0x00000000);	/* Disable EEC */
+
+	/*--------------------------------------------------------------------
+	 * Setup for board-specific specific mem
+	 *------------------------------------------------------------------*/
+	/*
+	 * Following for CAS Latency = 2.5 @ 133 MHz PLB
+	 */
+	mtsdram(mem_b0cr, 0x000a4001);	/* SDBA=0x000 128MB, Mode 3, enabled */
+	mtsdram(mem_b1cr, 0x080a4001);	/* SDBA=0x080 128MB, Mode 3, enabled */
+
+	mtsdram(mem_tr0, 0x410a4012);	/* ?? */
+	mtsdram(mem_tr1, 0x8080080b);	/* ?? */
+	mtsdram(mem_rtr, 0x04080000);	/* ?? */
+	mtsdram(mem_cfg1, 0x00000000);	/* Self-refresh exit, disable PM    */
+	mtsdram(mem_cfg0, 0x34000000);	/* Disable EEC */
+	udelay(400);		/* Delay 200 usecs (min)            */
+
+	/*--------------------------------------------------------------------
+	 * Enable the controller, then wait for DCEN to complete
+	 *------------------------------------------------------------------*/
+	mtsdram(mem_cfg0, 0x84000000);	/* Enable */
+
+	for (;;) {
+		mfsdram(mem_mcsts, reg);
+		if (reg & 0x80000000)
+			break;
+	}
+}
+
+/*************************************************************************
+ *  long int initdram
+ *
+ ************************************************************************/
+long int initdram(int board)
+{
+	sdram_init();
+	return CFG_SDRAM_BANKS * (CFG_KBYTES_SDRAM * 1024);	/* return bytes */
+}
+
+#if defined(CFG_DRAM_TEST)
+int testdram(void)
+{
+	unsigned long *mem = (unsigned long *)0;
+	const unsigned long kend = (1024 / sizeof(unsigned long));
+	unsigned long k, n;
+
+	mtmsr(0);
+
+	for (k = 0; k < CFG_KBYTES_SDRAM;
+	     ++k, mem += (1024 / sizeof(unsigned long))) {
+		if ((k & 1023) == 0) {
+			printf("%3d MB\r", k / 1024);
+		}
+
+		memset(mem, 0xaaaaaaaa, 1024);
+		for (n = 0; n < kend; ++n) {
+			if (mem[n] != 0xaaaaaaaa) {
+				printf("SDRAM test fails at: %08x\n",
+				       (uint) & mem[n]);
+				return 1;
+			}
+		}
+
+		memset(mem, 0x55555555, 1024);
+		for (n = 0; n < kend; ++n) {
+			if (mem[n] != 0x55555555) {
+				printf("SDRAM test fails at: %08x\n",
+				       (uint) & mem[n]);
+				return 1;
+			}
+		}
+	}
+	printf("SDRAM test passes\n");
+	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;
+	unsigned long addr;
+
+	/*--------------------------------------------------------------------------+
+	 *	Bamboo 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[PAE] not set.\n");
+		printf("PCI: Configuration aborted.\n");
+		return 0;
+	}
+
+	/*-------------------------------------------------------------------------+
+	  | Set priority for all PLB3 devices to 0.
+	  | Set PLB3 arbiter to fair mode.
+	  +-------------------------------------------------------------------------*/
+	mfsdr(sdr_amp1, addr);
+	mtsdr(sdr_amp1, (addr & 0x000000FF) | 0x0000FF00);
+	addr = mfdcr(plb3_acr);
+	mtdcr(plb3_acr, addr | 0x80000000);
+
+	/*-------------------------------------------------------------------------+
+	  | Set priority for all PLB4 devices to 0.
+	  +-------------------------------------------------------------------------*/
+	mfsdr(sdr_amp0, addr);
+	mtsdr(sdr_amp0, (addr & 0x000000FF) | 0x0000FF00);
+	addr = mfdcr(plb4_acr) | 0xa0000000;	/* Was 0x8---- */
+	mtdcr(plb4_acr, addr);
+
+	/*-------------------------------------------------------------------------+
+	  | Set Nebula PLB4 arbiter to fair mode.
+	  +-------------------------------------------------------------------------*/
+	/* Segment0 */
+	addr = (mfdcr(plb0_acr) & ~plb0_acr_ppm_mask) | plb0_acr_ppm_fair;
+	addr = (addr & ~plb0_acr_hbu_mask) | plb0_acr_hbu_enabled;
+	addr = (addr & ~plb0_acr_rdp_mask) | plb0_acr_rdp_4deep;
+	addr = (addr & ~plb0_acr_wrp_mask) | plb0_acr_wrp_2deep;
+	mtdcr(plb0_acr, addr);
+
+	/* Segment1 */
+	addr = (mfdcr(plb1_acr) & ~plb1_acr_ppm_mask) | plb1_acr_ppm_fair;
+	addr = (addr & ~plb1_acr_hbu_mask) | plb1_acr_hbu_enabled;
+	addr = (addr & ~plb1_acr_rdp_mask) | plb1_acr_rdp_4deep;
+	addr = (addr & ~plb1_acr_wrp_mask) | plb1_acr_wrp_2deep;
+	mtdcr(plb1_acr, addr);
+
+	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)
+{
+	/*--------------------------------------------------------------------------+
+	 * Set up Direct MMIO registers
+	 *--------------------------------------------------------------------------*/
+	/*--------------------------------------------------------------------------+
+	  | PowerPC440 EP PCI Master configuration.
+	  | Map one 1Gig range of PLB/processor addresses to PCI memory space.
+	  |   PLB address 0xA0000000-0xDFFFFFFF ==> PCI address 0xA0000000-0xDFFFFFFF
+	  |   Use byte reversed out routines to handle endianess.
+	  | Make this region non-prefetchable.
+	  +--------------------------------------------------------------------------*/
+	out32r(PCIX0_PMM0MA, 0x00000000);	/* PMM0 Mask/Attribute - disabled b4 setting */
+	out32r(PCIX0_PMM0LA, CFG_PCI_MEMBASE);	/* PMM0 Local Address */
+	out32r(PCIX0_PMM0PCILA, CFG_PCI_MEMBASE);	/* PMM0 PCI Low Address */
+	out32r(PCIX0_PMM0PCIHA, 0x00000000);	/* PMM0 PCI High Address */
+	out32r(PCIX0_PMM0MA, 0xE0000001);	/* 512M + No prefetching, and enable region */
+
+	out32r(PCIX0_PMM1MA, 0x00000000);	/* PMM0 Mask/Attribute - disabled b4 setting */
+	out32r(PCIX0_PMM1LA, CFG_PCI_MEMBASE2);	/* PMM0 Local Address */
+	out32r(PCIX0_PMM1PCILA, CFG_PCI_MEMBASE2);	/* PMM0 PCI Low Address */
+	out32r(PCIX0_PMM1PCIHA, 0x00000000);	/* PMM0 PCI High Address */
+	out32r(PCIX0_PMM1MA, 0xE0000001);	/* 512M + No prefetching, and enable region */
+
+	out32r(PCIX0_PTM1MS, 0x00000001);	/* Memory Size/Attribute */
+	out32r(PCIX0_PTM1LA, 0);	/* Local Addr. Reg */
+	out32r(PCIX0_PTM2MS, 0);	/* Memory Size/Attribute */
+	out32r(PCIX0_PTM2LA, 0);	/* Local Addr. Reg */
+
+	/*--------------------------------------------------------------------------+
+	 * Set up Configuration registers
+	 *--------------------------------------------------------------------------*/
+
+	/* Program the board's subsystem id/vendor id */
+	pci_write_config_word(0, PCI_SUBSYSTEM_VENDOR_ID,
+			      CFG_PCI_SUBSYS_VENDORID);
+	pci_write_config_word(0, PCI_SUBSYSTEM_ID, CFG_PCI_SUBSYS_ID);
+
+	/* Configure command register as bus master */
+	pci_write_config_word(0, PCI_COMMAND, PCI_COMMAND_MASTER);
+
+	/* 240nS PCI clock */
+	pci_write_config_word(0, PCI_LATENCY_TIMER, 1);
+
+	/* No error reporting */
+	pci_write_config_word(0, PCI_ERREN, 0);
+
+	pci_write_config_dword(0, PCI_BRDGOPT2, 0x00000101);
+
+}
+#endif				/* defined(CONFIG_PCI) && defined(CFG_PCI_TARGET_INIT) */
+
+/*************************************************************************
+ *  pci_master_init
+ *
+ ************************************************************************/
+#if defined(CONFIG_PCI) && defined(CFG_PCI_MASTER_INIT)
+void pci_master_init(struct pci_controller *hose)
+{
+	unsigned short temp_short;
+
+	/*--------------------------------------------------------------------------+
+	  | Write the PowerPC440 EP PCI Configuration regs.
+	  |   Enable PowerPC440 EP to be a master on the PCI bus (PMM).
+	  |   Enable PowerPC440 EP to act as a PCI memory target (PTM).
+	  +--------------------------------------------------------------------------*/
+	pci_read_config_word(0, PCI_COMMAND, &temp_short);
+	pci_write_config_word(0, PCI_COMMAND,
+			      temp_short | PCI_COMMAND_MASTER |
+			      PCI_COMMAND_MEMORY);
+}
+#endif				/* defined(CONFIG_PCI) && defined(CFG_PCI_MASTER_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)
+{
+	/* Bamboo is always configured as host. */
+	return (1);
+}
+#endif				/* defined(CONFIG_PCI) */
+
+/*************************************************************************
+ *  hw_watchdog_reset
+ *
+ *	This routine is called to reset (keep alive) the watchdog timer
+ *
+ ************************************************************************/
+#if defined(CONFIG_HW_WATCHDOG)
+void hw_watchdog_reset(void)
+{
+
+}
+#endif