diff options
Diffstat (limited to 'arch/powerpc/boot')
| -rw-r--r-- | arch/powerpc/boot/4xx.c | 55 | ||||
| -rw-r--r-- | arch/powerpc/boot/4xx.h | 1 | ||||
| -rw-r--r-- | arch/powerpc/boot/Makefile | 3 | ||||
| -rw-r--r-- | arch/powerpc/boot/dts/ep405.dts | 221 | ||||
| -rw-r--r-- | arch/powerpc/boot/ep405.c | 74 | ||||
| -rw-r--r-- | arch/powerpc/boot/treeboot-walnut.c | 49 | ||||
| -rwxr-xr-x | arch/powerpc/boot/wrapper | 2 |
7 files changed, 353 insertions, 52 deletions
diff --git a/arch/powerpc/boot/4xx.c b/arch/powerpc/boot/4xx.c index 3d0e4f921f1d..852992b146e3 100644 --- a/arch/powerpc/boot/4xx.c +++ b/arch/powerpc/boot/4xx.c @@ -179,13 +179,16 @@ void ibm40x_dbcr_reset(void) #define EMAC_RESET 0x20000000 void ibm4xx_quiesce_eth(u32 *emac0, u32 *emac1) { - /* Quiesce the MAL and EMAC(s) since PIBS/OpenBIOS don't do this for us */ + /* Quiesce the MAL and EMAC(s) since PIBS/OpenBIOS don't + * do this for us + */ if (emac0) *emac0 = EMAC_RESET; if (emac1) *emac1 = EMAC_RESET; mtdcr(DCRN_MAL0_CFG, MAL_RESET); + while (mfdcr(DCRN_MAL0_CFG) & MAL_RESET) {}; } /* Read 4xx EBC bus bridge registers to get mappings of the peripheral @@ -298,3 +301,53 @@ void ibm440ep_fixup_clocks(unsigned int sysclk, unsigned int ser_clk) dt_fixup_clock("/plb/opb/serial@ef600500", uart0); dt_fixup_clock("/plb/opb/serial@ef600600", uart0); } + +void ibm405gp_fixup_clocks(unsigned int sysclk, unsigned int ser_clk) +{ + u32 pllmr = mfdcr(DCRN_CPC0_PLLMR); + u32 cpc0_cr0 = mfdcr(DCRN_405_CPC0_CR0); + u32 cpc0_cr1 = mfdcr(DCRN_405_CPC0_CR1); + u32 cpu, plb, opb, ebc, tb, uart0, uart1, m; + u32 fwdv, fbdv, cbdv, opdv, epdv, udiv; + + fwdv = (8 - ((pllmr & 0xe0000000) >> 29)); + fbdv = (pllmr & 0x1e000000) >> 25; + cbdv = ((pllmr & 0x00060000) >> 17) + 1; + opdv = ((pllmr & 0x00018000) >> 15) + 1; + epdv = ((pllmr & 0x00001800) >> 13) + 2; + udiv = ((cpc0_cr0 & 0x3e) >> 1) + 1; + + m = fwdv * fbdv * cbdv; + + cpu = sysclk * m / fwdv; + plb = cpu / cbdv; + opb = plb / opdv; + ebc = plb / epdv; + + if (cpc0_cr0 & 0x80) { + /* uart0 uses the external clock */ + uart0 = ser_clk; + } else { + uart0 = cpu / udiv; + } + + if (cpc0_cr0 & 0x40) { + /* uart1 uses the external clock */ + uart1 = ser_clk; + } else { + uart1 = cpu / udiv; + } + + /* setup the timebase clock to tick at the cpu frequency */ + cpc0_cr1 = cpc0_cr1 & ~0x00800000; + mtdcr(DCRN_405_CPC0_CR1, cpc0_cr1); + tb = cpu; + + dt_fixup_cpu_clocks(cpu, tb, 0); + dt_fixup_clock("/plb", plb); + dt_fixup_clock("/plb/opb", opb); + dt_fixup_clock("/plb/ebc", ebc); + dt_fixup_clock("/plb/opb/serial@ef600300", uart0); + dt_fixup_clock("/plb/opb/serial@ef600400", uart1); +} + diff --git a/arch/powerpc/boot/4xx.h b/arch/powerpc/boot/4xx.h index adba6a599a93..6af14a01c7f0 100644 --- a/arch/powerpc/boot/4xx.h +++ b/arch/powerpc/boot/4xx.h @@ -18,5 +18,6 @@ void ibm40x_dbcr_reset(void); void ibm4xx_quiesce_eth(u32 *emac0, u32 *emac1); void ibm4xx_fixup_ebc_ranges(const char *ebc); void ibm440ep_fixup_clocks(unsigned int sysclk, unsigned int ser_clk); +void ibm405gp_fixup_clocks(unsigned int sysclk, unsigned int ser_clk); #endif /* _POWERPC_BOOT_4XX_H_ */ diff --git a/arch/powerpc/boot/Makefile b/arch/powerpc/boot/Makefile index 9149bb8ed03c..8e5bdd35fd48 100644 --- a/arch/powerpc/boot/Makefile +++ b/arch/powerpc/boot/Makefile @@ -58,7 +58,7 @@ src-plat := of.c cuboot-52xx.c cuboot-83xx.c cuboot-85xx.c holly.c \ cuboot-ebony.c treeboot-ebony.c prpmc2800.c \ ps3-head.S ps3-hvcall.S ps3.c treeboot-bamboo.c cuboot-8xx.c \ cuboot-pq2.c cuboot-sequoia.c treeboot-walnut.c cuboot-bamboo.c \ - fixed-head.S ep88xc.c cuboot-hpc2.c + fixed-head.S ep88xc.c cuboot-hpc2.c ep405.c src-boot := $(src-wlib) $(src-plat) empty.c src-boot := $(addprefix $(obj)/, $(src-boot)) @@ -189,6 +189,7 @@ image-$(CONFIG_DEFAULT_UIMAGE) += uImage ifneq ($(CONFIG_DEVICE_TREE),"") image-$(CONFIG_PPC_8xx) += cuImage.8xx image-$(CONFIG_PPC_EP88XC) += zImage.ep88xc +image-$(CONFIG_EP405) += zImage.ep405 image-$(CONFIG_8260) += cuImage.pq2 image-$(CONFIG_PPC_MPC52xx) += cuImage.52xx image-$(CONFIG_PPC_83xx) += cuImage.83xx diff --git a/arch/powerpc/boot/dts/ep405.dts b/arch/powerpc/boot/dts/ep405.dts new file mode 100644 index 000000000000..007f3c24d3f2 --- /dev/null +++ b/arch/powerpc/boot/dts/ep405.dts @@ -0,0 +1,221 @@ +/* + * Device Tree Source for EP405 + * + * Copyright 2007 IBM Corp. + * Benjamin Herrenschmidt <benh@kernel.crashing.org> + * + * This file is licensed under the terms of the GNU General Public + * License version 2. This program is licensed "as is" without + * any warranty of any kind, whether express or implied. + */ + +/ { + #address-cells = <1>; + #size-cells = <1>; + model = "ep405"; + compatible = "ep405"; + dcr-parent = <&/cpus/PowerPC,405GP@0>; + + cpus { + #address-cells = <1>; + #size-cells = <0>; + + PowerPC,405GP@0 { + device_type = "cpu"; + reg = <0>; + clock-frequency = <bebc200>; /* Filled in by zImage */ + timebase-frequency = <0>; /* Filled in by zImage */ + i-cache-line-size = <20>; + d-cache-line-size = <20>; + i-cache-size = <4000>; + d-cache-size = <4000>; + dcr-controller; + dcr-access-method = "native"; + }; + }; + + memory { + device_type = "memory"; + reg = <0 0>; /* Filled in by zImage */ + }; + + UIC0: interrupt-controller { + compatible = "ibm,uic"; + interrupt-controller; + cell-index = <0>; + dcr-reg = <0c0 9>; + #address-cells = <0>; + #size-cells = <0>; + #interrupt-cells = <2>; + }; + + plb { + compatible = "ibm,plb3"; + #address-cells = <1>; + #size-cells = <1>; + ranges; + clock-frequency = <0>; /* Filled in by zImage */ + + SDRAM0: memory-controller { + compatible = "ibm,sdram-405gp"; + dcr-reg = <010 2>; + }; + + MAL: mcmal { + compatible = "ibm,mcmal-405gp", "ibm,mcmal"; + dcr-reg = <180 62>; + num-tx-chans = <1>; + num-rx-chans = <1>; + interrupt-parent = <&UIC0>; + interrupts = < + b 4 /* TXEOB */ + c 4 /* RXEOB */ + a 4 /* SERR */ + d 4 /* TXDE */ + e 4 /* RXDE */>; + }; + + POB0: opb { + compatible = "ibm,opb-405gp", "ibm,opb"; + #address-cells = <1>; + #size-cells = <1>; + ranges = <ef600000 ef600000 a00000>; + dcr-reg = <0a0 5>; + clock-frequency = <0>; /* Filled in by zImage */ + + UART0: serial@ef600300 { + device_type = "serial"; + compatible = "ns16550"; + reg = <ef600300 8>; + virtual-reg = <ef600300>; + clock-frequency = <0>; /* Filled in by zImage */ + current-speed = <2580>; + interrupt-parent = <&UIC0>; + interrupts = <0 4>; + }; + + UART1: serial@ef600400 { + device_type = "serial"; + compatible = "ns16550"; + reg = <ef600400 8>; + virtual-reg = <ef600400>; + clock-frequency = <0>; /* Filled in by zImage */ + current-speed = <2580>; + interrupt-parent = <&UIC0>; + interrupts = <1 4>; + }; + + IIC: i2c@ef600500 { + compatible = "ibm,iic-405gp", "ibm,iic"; + reg = <ef600500 11>; + interrupt-parent = <&UIC0>; + interrupts = <2 4>; + }; + + GPIO: gpio@ef600700 { + compatible = "ibm,gpio-405gp"; + reg = <ef600700 20>; + }; + + EMAC: ethernet@ef600800 { + linux,network-index = <0>; + device_type = "network"; + compatible = "ibm,emac-405gp", "ibm,emac"; + interrupt-parent = <&UIC0>; + interrupts = < + f 4 /* Ethernet */ + 9 4 /* Ethernet Wake Up */>; + local-mac-address = [000000000000]; /* Filled in by zImage */ + reg = <ef600800 70>; + mal-device = <&MAL>; + mal-tx-channel = <0>; + mal-rx-channel = <0>; + cell-index = <0>; + max-frame-size = <5dc>; + rx-fifo-size = <1000>; + tx-fifo-size = <800>; + phy-mode = "rmii"; + phy-map = <00000000>; + }; + + }; + + EBC0: ebc { + compatible = "ibm,ebc-405gp", "ibm,ebc"; + dcr-reg = <012 2>; + #address-cells = <2>; + #size-cells = <1>; + + + /* The ranges property is supplied by the bootwrapper + * and is based on the firmware's configuration of the + * EBC bridge + */ + clock-frequency = <0>; /* Filled in by zImage */ + + /* NVRAM and RTC */ + nvrtc@4,200000 { + compatible = "ds1742"; + reg = <4 200000 0>; /* size fixed up by zImage */ + }; + + /* "BCSR" CPLD contains a PCI irq controller */ + bcsr@4,0 { + compatible = "ep405-bcsr"; + reg = <4 0 10>; + interrupt-controller; + /* Routing table */ + irq-routing = [ 00 /* SYSERR */ + 01 /* STTM */ + 01 /* RTC */ + 01 /* FENET */ + 02 /* NB PCIIRQ mux ? */ + 03 /* SB Winbond 8259 ? */ + 04 /* Serial Ring */ + 05 /* USB (ep405pc) */ + 06 /* XIRQ 0 */ + 06 /* XIRQ 1 */ + 06 /* XIRQ 2 */ + 06 /* XIRQ 3 */ + 06 /* XIRQ 4 */ + 06 /* XIRQ 5 */ + 06 /* XIRQ 6 */ + 07]; /* Reserved */ + }; + }; + + PCI0: pci@ec000000 { + device_type = "pci"; + #interrupt-cells = <1>; + #size-cells = <2>; + #address-cells = <3>; + compatible = "ibm,plb405gp-pci", "ibm,plb-pci"; + primary; + reg = <eec00000 8 /* Config space access */ + eed80000 4 /* IACK */ + eed80000 4 /* Special cycle */ + ef480000 40>; /* Internal registers */ + + /* Outbound ranges, one memory and one IO, + * later cannot be changed. Chip supports a second + * IO range but we don't use it for now + */ + ranges = <02000000 0 80000000 80000000 0 20000000 + 01000000 0 00000000 e8000000 0 00010000>; + + /* Inbound 2GB range starting at 0 */ + dma-ranges = <42000000 0 0 0 0 80000000>; + + /* That's all I know about IRQs on that thing ... */ + interrupt-map-mask = <f800 0 0 0>; + interrupt-map = < + /* USB */ + 7000 0 0 0 &UIC0 1e 8 /* IRQ5 */ + >; + }; + }; + + chosen { + linux,stdout-path = "/plb/opb/serial@ef600300"; + }; +}; diff --git a/arch/powerpc/boot/ep405.c b/arch/powerpc/boot/ep405.c new file mode 100644 index 000000000000..2d08a862cbea --- /dev/null +++ b/arch/powerpc/boot/ep405.c @@ -0,0 +1,74 @@ +/* + * Embedded Planet EP405 with PlanetCore firmware + * + * (c) Benjamin Herrenschmidt <benh@kernel.crashing.org>, IBM Corp,\ + * + * Based on ep88xc.c by + * + * Scott Wood <scottwood@freescale.com> + * + * Copyright (c) 2007 Freescale Semiconductor, Inc. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + */ + +#include "ops.h" +#include "stdio.h" +#include "planetcore.h" +#include "dcr.h" +#include "4xx.h" +#include "io.h" + +static char *table; +static u64 mem_size; + +static void platform_fixups(void) +{ + u64 val; + void *nvrtc; + + dt_fixup_memory(0, mem_size); + planetcore_set_mac_addrs(table); + + if (!planetcore_get_decimal(table, PLANETCORE_KEY_CRYSTAL_HZ, &val)) { + printf("No PlanetCore crystal frequency key.\r\n"); + return; + } + ibm405gp_fixup_clocks(val, 0xa8c000); + ibm4xx_quiesce_eth((u32 *)0xef600800, NULL); + ibm4xx_fixup_ebc_ranges("/plb/ebc"); + + if (!planetcore_get_decimal(table, PLANETCORE_KEY_KB_NVRAM, &val)) { + printf("No PlanetCore NVRAM size key.\r\n"); + return; + } + nvrtc = finddevice("/plb/ebc/nvrtc@4,200000"); + if (nvrtc != NULL) { + u32 reg[3] = { 4, 0x200000, 0}; + getprop(nvrtc, "reg", reg, 3); + reg[2] = (val << 10) & 0xffffffff; + setprop(nvrtc, "reg", reg, 3); + } +} + +void platform_init(unsigned long r3, unsigned long r4, unsigned long r5, + unsigned long r6, unsigned long r7) +{ + table = (char *)r3; + planetcore_prepare_table(table); + + if (!planetcore_get_decimal(table, PLANETCORE_KEY_MB_RAM, &mem_size)) + return; + + mem_size *= 1024 * 1024; + simple_alloc_init(_end, mem_size - (unsigned long)_end, 32, 64); + + fdt_init(_dtb_start); + + planetcore_set_stdout_path(table); + + serial_console_init(); + platform_ops.fixups = platform_fixups; +} diff --git a/arch/powerpc/boot/treeboot-walnut.c b/arch/powerpc/boot/treeboot-walnut.c index 70ffce343c0a..330485f47825 100644 --- a/arch/powerpc/boot/treeboot-walnut.c +++ b/arch/powerpc/boot/treeboot-walnut.c @@ -20,55 +20,6 @@ BSS_STACK(4096); -void ibm405gp_fixup_clocks(unsigned int sysclk, unsigned int ser_clk) -{ - u32 pllmr = mfdcr(DCRN_CPC0_PLLMR); - u32 cpc0_cr0 = mfdcr(DCRN_405_CPC0_CR0); - u32 cpc0_cr1 = mfdcr(DCRN_405_CPC0_CR1); - u32 cpu, plb, opb, ebc, tb, uart0, uart1, m; - u32 fwdv, fbdv, cbdv, opdv, epdv, udiv; - - fwdv = (8 - ((pllmr & 0xe0000000) >> 29)); - fbdv = (pllmr & 0x1e000000) >> 25; - cbdv = ((pllmr & 0x00060000) >> 17) + 1; - opdv = ((pllmr & 0x00018000) >> 15) + 1; - epdv = ((pllmr & 0x00001800) >> 13) + 2; - udiv = ((cpc0_cr0 & 0x3e) >> 1) + 1; - - m = fwdv * fbdv * cbdv; - - cpu = sysclk * m / fwdv; - plb = cpu / cbdv; - opb = plb / opdv; - ebc = plb / epdv; - - if (cpc0_cr0 & 0x80) { - /* uart0 uses the external clock */ - uart0 = ser_clk; - } else { - uart0 = cpu / udiv; - } - - if (cpc0_cr0 & 0x40) { - /* uart1 uses the external clock */ - uart1 = ser_clk; - } else { - uart1 = cpu / udiv; - } - - /* setup the timebase clock to tick at the cpu frequency */ - cpc0_cr1 = cpc0_cr1 & ~0x00800000; - mtdcr(DCRN_405_CPC0_CR1, cpc0_cr1); - tb = cpu; - - dt_fixup_cpu_clocks(cpu, tb, 0); - dt_fixup_clock("/plb", plb); - dt_fixup_clock("/plb/opb", opb); - dt_fixup_clock("/plb/ebc", ebc); - dt_fixup_clock("/plb/opb/serial@ef600300", uart0); - dt_fixup_clock("/plb/opb/serial@ef600400", uart1); -} - static void walnut_flashsel_fixup(void) { void *devp, *sram; diff --git a/arch/powerpc/boot/wrapper b/arch/powerpc/boot/wrapper index f961cdeb97a2..154df055aad2 100755 --- a/arch/powerpc/boot/wrapper +++ b/arch/powerpc/boot/wrapper @@ -168,7 +168,7 @@ ps3) ksection=.kernel:vmlinux.bin isection=.kernel:initrd ;; -ep88xc) +ep88xc|ep405) platformo="$object/fixed-head.o $object/$platform.o" binary=y ;; |