[PATCH][2/3] ppc32: add bamboo platform
From: Matt Porter <mporter@kernel.crashing.org>
Date: 2005-07-27 17:38:07
Also in:
lkml
Subsystem:
the rest · Maintainer:
Linus Torvalds
Add Bamboo platform support. This is an AMCC 440EP-based reference platform. Signed-off-by: Wade Farnsworth <redacted> Signed-off-by: Matt Porter <mporter@kernel.crashing.org>
diff --git a/arch/ppc/platforms/4xx/bamboo.c b/arch/ppc/platforms/4xx/bambo=o.c new file mode 100644
--- /dev/null
+++ b/arch/ppc/platforms/4xx/bamboo.c@@ -0,0 +1,427 @@ +/* + * arch/ppc/platforms/4xx/bamboo.c + * + * Bamboo board specific routines + * + * Wade Farnsworth <wfarnsworth@mvista.com> + * Copyright 2004 MontaVista Software Inc. + * + * 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. + */ + +#include <linux/config.h> +#include <linux/stddef.h> +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/errno.h> +#include <linux/reboot.h> +#include <linux/pci.h> +#include <linux/kdev_t.h> +#include <linux/types.h> +#include <linux/major.h> +#include <linux/blkdev.h> +#include <linux/console.h> +#include <linux/delay.h> +#include <linux/ide.h> +#include <linux/initrd.h> +#include <linux/irq.h> +#include <linux/seq_file.h> +#include <linux/root_dev.h> +#include <linux/tty.h> +#include <linux/serial.h> +#include <linux/serial_core.h> +#include <linux/ethtool.h> + +#include <asm/system.h> +#include <asm/pgtable.h> +#include <asm/page.h> +#include <asm/dma.h> +#include <asm/io.h> +#include <asm/machdep.h> +#include <asm/ocp.h> +#include <asm/pci-bridge.h> +#include <asm/time.h> +#include <asm/todc.h> +#include <asm/bootinfo.h> +#include <asm/ppc4xx_pic.h> +#include <asm/ppcboot.h> + +#include <syslib/gen550.h> +#include <syslib/ibm440gx_common.h> + +/* + * This is a horrible kludge, we eventually need to abstract this + * generic PHY stuff, so the standard phy mode defines can be + * easily used from arch code. + */ +#include "../../../../drivers/net/ibm_emac/ibm_emac_phy.h" + +bd_t __res; + +static struct ibm44x_clocks clocks __initdata; + +/* + * Bamboo external IRQ triggering/polarity settings + */ +unsigned char ppc4xx_uic_ext_irq_cfg[] __initdata =3D { + (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* IRQ0: Ethernet transceiver =
*/
+ (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* IRQ1: Expansion connector */
+ (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* IRQ2: PCI slot 0 */
+ (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* IRQ3: PCI slot 1 */
+ (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* IRQ4: PCI slot 2 */
+ (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* IRQ5: PCI slot 3 */
+ (IRQ_SENSE_EDGE | IRQ_POLARITY_NEGATIVE), /* IRQ6: SMI pushbutton */
+ (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* IRQ7: EXT */
+ (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* IRQ8: EXT */
+ (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* IRQ9: EXT */
+};
+
+static void __init
+bamboo_calibrate_decr(void)
+{
+ unsigned int freq;
+
+ if (mfspr(SPRN_CCR1) & CCR1_TCS)
+ freq =3D BAMBOO_TMRCLK;
+ else
+ freq =3D clocks.cpu;
+
+ ibm44x_calibrate_decr(freq);
+=09
+}
+
+static int
+bamboo_show_cpuinfo(struct seq_file *m)
+{
+ seq_printf(m, "vendor\t\t: IBM\n");
+ seq_printf(m, "machine\t\t: PPC440EP EVB (Bamboo)\n");
+
+ return 0;
+}
+
+static inline int
+bamboo_map_irq(struct pci_dev *dev, unsigned char idsel, unsigned char pin)
+{
+ static char pci_irq_table[][4] =3D
+ /*
+ * PCI IDSEL/INTPIN->INTLINE
+ * A B C D
+ */
+ {
+ { 28, 28, 28, 28 }, /* IDSEL 1 - PCI Slot 0 */
+ { 27, 27, 27, 27 }, /* IDSEL 2 - PCI Slot 1 */
+ { 26, 26, 26, 26 }, /* IDSEL 3 - PCI Slot 2 */
+ { 25, 25, 25, 25 }, /* IDSEL 4 - PCI Slot 3 */
+ };
+
+ const long min_idsel =3D 1, max_idsel =3D 4, irqs_per_slot =3D 4;
+ return PCI_IRQ_TABLE_LOOKUP;
+}
+
+static void __init bamboo_set_emacdata(void)
+{
+ unsigned char * selection1_base;
+ struct ocp_def *def;
+ struct ocp_func_emac_data *emacdata;
+ u8 selection1_val;
+ int mode;
+=09
+ selection1_base =3D ioremap64(BAMBOO_FPGA_SELECTION1_REG_ADDR, 16);
+ selection1_val =3D readb(selection1_base);
+ iounmap((void *) selection1_base);
+ if (BAMBOO_SEL_MII(selection1_val))
+ mode =3D PHY_MODE_MII;
+ else if (BAMBOO_SEL_RMII(selection1_val))
+ mode =3D PHY_MODE_RMII;
+ else=20
+ mode =3D PHY_MODE_SMII;
+=09
+ /* Set mac_addr and phy mode for each EMAC */
+
+ def =3D ocp_get_one_device(OCP_VENDOR_IBM, OCP_FUNC_EMAC, 0);
+ emacdata =3D def->additions;
+ memcpy(emacdata->mac_addr, __res.bi_enetaddr, 6);
+ emacdata->phy_mode =3D mode;
+
+ def =3D ocp_get_one_device(OCP_VENDOR_IBM, OCP_FUNC_EMAC, 1);
+ emacdata =3D def->additions;
+ memcpy(emacdata->mac_addr, __res.bi_enet1addr, 6);
+ emacdata->phy_mode =3D mode;
+}
+
+static int
+bamboo_exclude_device(unsigned char bus, unsigned char devfn)
+{
+ return (bus =3D=3D 0 && devfn =3D=3D 0);
+}
+
+#define PCI_READW(offset) \
+ (readw((void *)((u32)pci_reg_base+offset)))
+
+#define PCI_WRITEW(value, offset) \
+ (writew(value, (void *)((u32)pci_reg_base+offset)))
+=09
+#define PCI_WRITEL(value, offset) \
+ (writel(value, (void *)((u32)pci_reg_base+offset)))
+
+static void __init
+bamboo_setup_pci(void)
+{
+ void *pci_reg_base;
+ unsigned long memory_size;
+ memory_size =3D ppc_md.find_end_of_memory();
+
+ pci_reg_base =3D ioremap64(BAMBOO_PCIL0_BASE, BAMBOO_PCIL0_SIZE);
+
+ /* Enable PCI I/O, Mem, and Busmaster cycles */
+ PCI_WRITEW(PCI_READW(PCI_COMMAND) |=20
+ PCI_COMMAND_MEMORY |=20
+ PCI_COMMAND_MASTER, PCI_COMMAND);
+
+ /* Disable region first */
+ PCI_WRITEL(0, BAMBOO_PCIL0_PMM0MA);
+
+ /* PLB starting addr: 0x00000000A0000000 */
+ PCI_WRITEL(BAMBOO_PCI_PHY_MEM_BASE, BAMBOO_PCIL0_PMM0LA);
+
+ /* PCI start addr, 0xA0000000 (PCI Address) */
+ PCI_WRITEL(BAMBOO_PCI_MEM_BASE, BAMBOO_PCIL0_PMM0PCILA);
+ PCI_WRITEL(0, BAMBOO_PCIL0_PMM0PCIHA);
+
+ /* Enable no pre-fetch, enable region */
+ PCI_WRITEL(((0xffffffff -=20
+ (BAMBOO_PCI_UPPER_MEM - BAMBOO_PCI_MEM_BASE)) | 0x01),=20
+ BAMBOO_PCIL0_PMM0MA);
+=09
+ /* Disable region one */
+ PCI_WRITEL(0, BAMBOO_PCIL0_PMM1MA);
+ PCI_WRITEL(0, BAMBOO_PCIL0_PMM1LA);
+ PCI_WRITEL(0, BAMBOO_PCIL0_PMM1PCILA);
+ PCI_WRITEL(0, BAMBOO_PCIL0_PMM1PCIHA);
+ PCI_WRITEL(0, BAMBOO_PCIL0_PMM1MA);
+=09
+ /* Disable region two */
+ PCI_WRITEL(0, BAMBOO_PCIL0_PMM2MA);
+ PCI_WRITEL(0, BAMBOO_PCIL0_PMM2LA);
+ PCI_WRITEL(0, BAMBOO_PCIL0_PMM2PCILA);
+ PCI_WRITEL(0, BAMBOO_PCIL0_PMM2PCIHA);
+ PCI_WRITEL(0, BAMBOO_PCIL0_PMM2MA);
+=09
+ /* Now configure the PCI->PLB windows, we only use PTM1
+ *
+ * For Inbound flow, set the window size to all available memory
+ * This is required because if size is smaller,
+ * then Eth/PCI DD would fail as PCI card not able to access
+ * the memory allocated by DD.
+ */
+=09
+ PCI_WRITEL(0, BAMBOO_PCIL0_PTM1MS); /* disabled region 1 */
+ PCI_WRITEL(0, BAMBOO_PCIL0_PTM1LA); /* begin of address map */
+
+ memory_size =3D 1 << fls(memory_size - 1);
+
+ /* Size low + Enabled */
+ PCI_WRITEL((0xffffffff - (memory_size - 1)) | 0x1, BAMBOO_PCIL0_PTM1MS);
+=09
+ eieio();
+ iounmap(pci_reg_base);
+}
+
+static void __init
+bamboo_setup_hose(void)
+{
+ unsigned int bar_response, bar;
+ struct pci_controller *hose;
+
+ bamboo_setup_pci();
+
+ hose =3D pcibios_alloc_controller();
+
+ if (!hose)
+ return;
+
+ hose->first_busno =3D 0;
+ hose->last_busno =3D 0xff;
+
+ hose->pci_mem_offset =3D BAMBOO_PCI_MEM_OFFSET;
+
+ pci_init_resource(&hose->io_resource,
+ BAMBOO_PCI_LOWER_IO,
+ BAMBOO_PCI_UPPER_IO,
+ IORESOURCE_IO,
+ "PCI host bridge");
+
+ pci_init_resource(&hose->mem_resources[0],
+ BAMBOO_PCI_LOWER_MEM,
+ BAMBOO_PCI_UPPER_MEM,
+ IORESOURCE_MEM,
+ "PCI host bridge");
+
+ ppc_md.pci_exclude_device =3D bamboo_exclude_device;
+
+ hose->io_space.start =3D BAMBOO_PCI_LOWER_IO;
+ hose->io_space.end =3D BAMBOO_PCI_UPPER_IO;
+ hose->mem_space.start =3D BAMBOO_PCI_LOWER_MEM;
+ hose->mem_space.end =3D BAMBOO_PCI_UPPER_MEM;
+ isa_io_base =3D
+ (unsigned long)ioremap64(BAMBOO_PCI_IO_BASE, BAMBOO_PCI_IO_SIZE);
+ hose->io_base_virt =3D (void *)isa_io_base;
+
+ setup_indirect_pci(hose,
+ BAMBOO_PCI_CFGA_PLB32,
+ BAMBOO_PCI_CFGD_PLB32);
+ hose->set_cfg_type =3D 1;
+
+ /* Zero config bars */
+ for (bar =3D PCI_BASE_ADDRESS_1; bar <=3D PCI_BASE_ADDRESS_2; bar +=3D 4)=
{
+ early_write_config_dword(hose, hose->first_busno,
+ PCI_FUNC(hose->first_busno), bar,
+ 0x00000000);
+ early_read_config_dword(hose, hose->first_busno,
+ PCI_FUNC(hose->first_busno), bar,
+ &bar_response);
+ }
+
+ hose->last_busno =3D pciauto_bus_scan(hose, hose->first_busno);
+
+ ppc_md.pci_swizzle =3D common_swizzle;
+ ppc_md.pci_map_irq =3D bamboo_map_irq;
+}
+
+TODC_ALLOC();
+
+static void __init
+bamboo_early_serial_map(void)
+{
+ struct uart_port port;
+
+ /* Setup ioremapped serial port access */
+ memset(&port, 0, sizeof(port));
+ port.membase =3D ioremap64(PPC440EP_UART0_ADDR, 8);
+ port.irq =3D 0;
+ port.uartclk =3D clocks.uart0;
+ port.regshift =3D 0;
+ port.iotype =3D SERIAL_IO_MEM;
+ port.flags =3D ASYNC_BOOT_AUTOCONF | ASYNC_SKIP_TEST;
+ port.line =3D 0;
+
+ if (early_serial_setup(&port) !=3D 0) {
+ printk("Early serial init of port 0 failed\n");
+ }
+
+#if defined(CONFIG_SERIAL_TEXT_DEBUG) || defined(CONFIG_KGDB)
+ /* Configure debug serial access */
+ gen550_init(0, &port);
+#endif
+
+ port.membase =3D ioremap64(PPC440EP_UART1_ADDR, 8);
+ port.irq =3D 1;
+ port.uartclk =3D clocks.uart1;
+ port.line =3D 1;
+
+ if (early_serial_setup(&port) !=3D 0) {
+ printk("Early serial init of port 1 failed\n");
+ }
+
+#if defined(CONFIG_SERIAL_TEXT_DEBUG) || defined(CONFIG_KGDB)
+ /* Configure debug serial access */
+ gen550_init(1, &port);
+#endif
+
+ port.membase =3D ioremap64(PPC440EP_UART2_ADDR, 8);
+ port.irq =3D 3;
+ port.uartclk =3D clocks.uart2;
+ port.line =3D 2;
+
+ if (early_serial_setup(&port) !=3D 0) {
+ printk("Early serial init of port 2 failed\n");
+ }
+
+#if defined(CONFIG_SERIAL_TEXT_DEBUG) || defined(CONFIG_KGDB)
+ /* Configure debug serial access */
+ gen550_init(2, &port);
+#endif
+
+ port.membase =3D ioremap64(PPC440EP_UART3_ADDR, 8);
+ port.irq =3D 4;
+ port.uartclk =3D clocks.uart3;
+ port.line =3D 3;
+
+ if (early_serial_setup(&port) !=3D 0) {
+ printk("Early serial init of port 3 failed\n");
+ }
+}
+
+static void __init
+bamboo_setup_arch(void)
+{
+
+ bamboo_set_emacdata();
+
+ ibm440gx_get_clocks(&clocks, 33333333, 6 * 1843200);
+ ocp_sys_info.opb_bus_freq =3D clocks.opb;
+
+ /* Setup TODC access */
+ TODC_INIT(TODC_TYPE_DS1743,
+ 0,
+ 0,
+ ioremap64(BAMBOO_RTC_ADDR, BAMBOO_RTC_SIZE),
+ 8);
+
+ /* init to some ~sane value until calibrate_delay() runs */
+ loops_per_jiffy =3D 50000000/HZ;
+
+ /* Setup PCI host bridge */
+ bamboo_setup_hose();
+
+#ifdef CONFIG_BLK_DEV_INITRD
+ if (initrd_start)
+ ROOT_DEV =3D Root_RAM0;
+ else
+#endif
+#ifdef CONFIG_ROOT_NFS
+ ROOT_DEV =3D Root_NFS;
+#else
+ ROOT_DEV =3D Root_HDA1;
+#endif
+
+ bamboo_early_serial_map();
+
+ /* Identify the system */
+ printk("IBM Bamboo port (MontaVista Software, Inc. (source@mvista.com))\n=
");
+}
+
+void __init platform_init(unsigned long r3, unsigned long r4,
+ unsigned long r5, unsigned long r6, unsigned long r7)
+{
+ parse_bootinfo(find_bootinfo());
+
+ /*
+ * If we were passed in a board information, copy it into the
+ * residual data area.
+ */
+ if (r3)
+ __res =3D *(bd_t *)(r3 + KERNELBASE);
+
+
+ ibm44x_platform_init();
+
+ ppc_md.setup_arch =3D bamboo_setup_arch;
+ ppc_md.show_cpuinfo =3D bamboo_show_cpuinfo;
+ ppc_md.get_irq =3D NULL; /* Set in ppc4xx_pic_init() */
+
+ ppc_md.calibrate_decr =3D bamboo_calibrate_decr;
+ ppc_md.time_init =3D todc_time_init;
+ ppc_md.set_rtc_time =3D todc_set_rtc_time;
+ ppc_md.get_rtc_time =3D todc_get_rtc_time;
+
+ ppc_md.nvram_read_val =3D todc_direct_read_val;
+ ppc_md.nvram_write_val =3D todc_direct_write_val;
+#ifdef CONFIG_KGDB
+ ppc_md.early_serial_map =3D bamboo_early_serial_map;
+#endif
+}
+diff --git a/arch/ppc/platforms/4xx/bamboo.h b/arch/ppc/platforms/4xx/bambo=o.h new file mode 100644
--- /dev/null
+++ b/arch/ppc/platforms/4xx/bamboo.h@@ -0,0 +1,136 @@ +/* + * arch/ppc/platforms/bamboo.h + * + * Bamboo board definitions + * + * Wade Farnsworth <wfarnsworth@mvista.com> + * + * Copyright 2004 MontaVista Software Inc. + * + * 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. + */ + +#ifdef __KERNEL__ +#ifndef __ASM_BAMBOO_H__ +#define __ASM_BAMBOO_H__ + +#include <linux/config.h> +#include <platforms/4xx/ibm440ep.h> + +/* F/W TLB mapping used in bootloader glue to reset EMAC */ +#define PPC44x_EMAC0_MR0 0x0EF600E00 + +/* Location of MAC addresses in PIBS image */ +#define PIBS_FLASH_BASE 0xfff00000 +#define PIBS_MAC_BASE (PIBS_FLASH_BASE+0xc0400) +#define PIBS_MAC_SIZE 0x200 +#define PIBS_MAC_OFFSET 0x100 + +/* Default clock rate */ +#define BAMBOO_TMRCLK 25000000 + +/* RTC/NVRAM location */ +#define BAMBOO_RTC_ADDR 0x080000000ULL +#define BAMBOO_RTC_SIZE 0x2000 + +/* FPGA Registers */ +#define BAMBOO_FPGA_ADDR 0x080002000ULL + +#define BAMBOO_FPGA_CONFIG2_REG_ADDR (BAMBOO_FPGA_ADDR + 0x1) +#define BAMBOO_FULL_DUPLEX_EN(x) (x & 0x08) +#define BAMBOO_FORCE_100Mbps(x) (x & 0x04) +#define BAMBOO_AUTONEGOTIATE(x) (x & 0x02) + +#define BAMBOO_FPGA_SETTING_REG_ADDR (BAMBOO_FPGA_ADDR + 0x3) +#define BAMBOO_BOOT_SMALL_FLASH(x) (!(x & 0x80)) +#define BAMBOO_LARGE_FLASH_EN(x) (!(x & 0x40)) +#define BAMBOO_BOOT_NAND_FLASH(x) (!(x & 0x20)) + +#define BAMBOO_FPGA_SELECTION1_REG_ADDR (BAMBOO_FPGA_ADDR + 0x4) +#define BAMBOO_SEL_MII(x) (x & 0x80) +#define BAMBOO_SEL_RMII(x) (x & 0x40) +#define BAMBOO_SEL_SMII(x) (x & 0x20) + +/* Flash */ +#define BAMBOO_SMALL_FLASH_LOW 0x087f00000ULL +#define BAMBOO_SMALL_FLASH_HIGH 0x0fff00000ULL +#define BAMBOO_SMALL_FLASH_SIZE 0x100000 +#define BAMBOO_LARGE_FLASH_LOW 0x087800000ULL +#define BAMBOO_LARGE_FLASH_HIGH1 0x0ff800000ULL +#define BAMBOO_LARGE_FLASH_HIGH2 0x0ffc00000ULL +#define BAMBOO_LARGE_FLASH_SIZE 0x400000 +#define BAMBOO_SRAM_LOW 0x087f00000ULL +#define BAMBOO_SRAM_HIGH1 0x0fff00000ULL +#define BAMBOO_SRAM_HIGH2 0x0ff800000ULL +#define BAMBOO_SRAM_SIZE 0x100000 +#define BAMBOO_NAND_FLASH_REG_ADDR 0x090000000ULL +#define BAMBOO_NAND_FLASH_REG_SIZE 0x2000 + +/* + * Serial port defines + */ +#define RS_TABLE_SIZE 4 + +#define UART0_IO_BASE 0xEF600300 +#define UART1_IO_BASE 0xEF600400 +#define UART2_IO_BASE 0xEF600500 +#define UART3_IO_BASE 0xEF600600 + +#define BASE_BAUD 33177600/3/16 +#define UART0_INT 0 +#define UART1_INT 1 +#define UART2_INT 3 +#define UART3_INT 4 + +#define STD_UART_OP(num) \ + { 0, BASE_BAUD, 0, UART##num##_INT, \ + (ASYNC_BOOT_AUTOCONF | ASYNC_SKIP_TEST), \ + iomem_base: UART##num##_IO_BASE, \ + io_type: SERIAL_IO_MEM}, + +#define SERIAL_PORT_DFNS \ + STD_UART_OP(0) \ + STD_UART_OP(1) \ + STD_UART_OP(2) \ + STD_UART_OP(3) + +/* PCI support */ +#define BAMBOO_PCI_CFGA_PLB32 0xeec00000 +#define BAMBOO_PCI_CFGD_PLB32 0xeec00004 + +#define BAMBOO_PCI_IO_BASE 0x00000000e8000000ULL +#define BAMBOO_PCI_IO_SIZE 0x00010000 +#define BAMBOO_PCI_MEM_OFFSET 0x00000000 +#define BAMBOO_PCI_PHY_MEM_BASE 0x00000000a0000000ULL + +#define BAMBOO_PCI_LOWER_IO 0x00000000 +#define BAMBOO_PCI_UPPER_IO 0x0000ffff +#define BAMBOO_PCI_LOWER_MEM 0xa0000000 +#define BAMBOO_PCI_UPPER_MEM 0xafffffff +#define BAMBOO_PCI_MEM_BASE 0xa0000000 + +#define BAMBOO_PCIL0_BASE 0x00000000ef400000ULL +#define BAMBOO_PCIL0_SIZE 0x40 + +#define BAMBOO_PCIL0_PMM0LA 0x000 +#define BAMBOO_PCIL0_PMM0MA 0x004 +#define BAMBOO_PCIL0_PMM0PCILA 0x008 +#define BAMBOO_PCIL0_PMM0PCIHA 0x00C +#define BAMBOO_PCIL0_PMM1LA 0x010 +#define BAMBOO_PCIL0_PMM1MA 0x014 +#define BAMBOO_PCIL0_PMM1PCILA 0x018 +#define BAMBOO_PCIL0_PMM1PCIHA 0x01C +#define BAMBOO_PCIL0_PMM2LA 0x020 +#define BAMBOO_PCIL0_PMM2MA 0x024 +#define BAMBOO_PCIL0_PMM2PCILA 0x028 +#define BAMBOO_PCIL0_PMM2PCIHA 0x02C +#define BAMBOO_PCIL0_PTM1MS 0x030 +#define BAMBOO_PCIL0_PTM1LA 0x034 +#define BAMBOO_PCIL0_PTM2MS 0x038 +#define BAMBOO_PCIL0_PTM2LA 0x03C +=09 +#endif /* __ASM_BAMBOO_H__ */ +#endif /* __KERNEL__ */