At present on some architectures we set up the following before calling board_init_f():

- global_data - stack - early malloc memory

Adding the code to support early malloc and global data setup to every arch's assembler start-up is a pain. Also this code is not actually architecture-specific. We can use common code for all architectures and with a bit of care we can write this code in C.

Add a new function to deal with this. It should be called after memory is available, with a pointer to the top of the area that should be used before relocation. The function will set things up and return the lowest memory address that it allocated/used. That can then be set as the top of the stack.

Note that on some archs this function will use the stack, so the stack pointer should be set to same value as is pased to board_init_f_mem(). A margin of 128 bytes will be left for this stack, so that it is not overwritten. This means that 128 bytes is wasted by this early call. This is not strictly necessary on several more modern archs, so we could remove this at the cost of some arch-dependent code.

With this function there is no-longer any need for the assembler code to zero global_data or set up the early malloc pointers.

Signed-off-by: Simon Glass sjg@chromium.org ---

common/board_f.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+)

diff --git a/common/board_f.c b/common/board_f.c index 98c9c72..9652e1d 100644 --- a/common/board_f.c +++ b/common/board_f.c @@ -1064,4 +1064,22 @@ void board_init_f_r(void) /* NOTREACHED - board_init_r() does not return */ hang(); } +#else +ulong board_init_f_mem(ulong top) +{ + /* Leave space for the stack we are running with now */ + top -= 0x80; + + top -= sizeof(struct global_data); + top = ALIGN(top, 16); + gd = (struct global_data *)top; + memset((void *)gd, '\0', sizeof(*gd)); + +#ifdef CONFIG_SYS_MALLOC_F_LEN + top -= CONFIG_SYS_MALLOC_F_LEN; + gd->malloc_base = top; +#endif + + return top; +} #endif /* CONFIG_X86 */

Many CONFIG options have an unnecessary value of 1. CONFIG_440 is set in the various board config files. Also simplify the CONFIG_440 check in config.mk

Signed-off-by: Simon Glass sjg@chromium.org ---

arch/powerpc/cpu/ppc4xx/config.mk | 5 +---- board/amcc/canyonlands/config.mk | 2 -- include/configs/canyonlands.h | 34 +++++++++++++++++----------------- 3 files changed, 18 insertions(+), 23 deletions(-)

diff --git a/arch/powerpc/cpu/ppc4xx/config.mk b/arch/powerpc/cpu/ppc4xx/config.mk index f87c9dc..9cb41bb 100644 --- a/arch/powerpc/cpu/ppc4xx/config.mk +++ b/arch/powerpc/cpu/ppc4xx/config.mk @@ -7,10 +7,7 @@

PLATFORM_CPPFLAGS += -mstring -msoft-float

-cfg=$(srctree)/include/configs/$(CONFIG_SYS_CONFIG_NAME:"%"=%).h -is440:=$(shell grep CONFIG_440 $(cfg)) - -ifneq (,$(findstring CONFIG_440,$(is440))) +ifneq (,$(CONFIG_440)) PLATFORM_CPPFLAGS += -Wa,-m440 -mcpu=440 else PLATFORM_CPPFLAGS += -Wa,-m405 -mcpu=405 diff --git a/board/amcc/canyonlands/config.mk b/board/amcc/canyonlands/config.mk index 63b8973..5cc90d2 100644 --- a/board/amcc/canyonlands/config.mk +++ b/board/amcc/canyonlands/config.mk @@ -8,8 +8,6 @@ # AMCC 460EX/460GT Evaluation Board (Canyonlands) board #

-PLATFORM_CPPFLAGS += -DCONFIG_440=1 - ifeq ($(debug),1) PLATFORM_CPPFLAGS += -DDEBUG endif diff --git a/include/configs/canyonlands.h b/include/configs/canyonlands.h index 8eeb15c..7b1f368 100644 --- a/include/configs/canyonlands.h +++ b/include/configs/canyonlands.h @@ -19,10 +19,10 @@ * and Arches dual (460GT) */ #ifdef CONFIG_CANYONLANDS -#define CONFIG_460EX 1 /* Specific PPC460EX */ +#define CONFIG_460EX /* Specific PPC460EX */ #define CONFIG_HOSTNAME canyonlands #else -#define CONFIG_460GT 1 /* Specific PPC460GT */ +#define CONFIG_460GT /* Specific PPC460GT */ #ifdef CONFIG_GLACIER #define CONFIG_HOSTNAME glacier #else @@ -32,7 +32,7 @@ #endif #endif

-#define CONFIG_440 1 +#define CONFIG_440

#ifndef CONFIG_SYS_TEXT_BASE #define CONFIG_SYS_TEXT_BASE 0xFFF80000 @@ -45,10 +45,10 @@

#define CONFIG_SYS_CLK_FREQ 66666667 /* external freq to pll */

-#define CONFIG_BOARD_EARLY_INIT_F 1 /* Call board_early_init_f */ -#define CONFIG_BOARD_EARLY_INIT_R 1 /* Call board_early_init_r */ -#define CONFIG_MISC_INIT_R 1 /* Call misc_init_r */ -#define CONFIG_BOARD_TYPES 1 /* support board types */ +#define CONFIG_BOARD_EARLY_INIT_F /* Call board_early_init_f */ +#define CONFIG_BOARD_EARLY_INIT_R /* Call board_early_init_r */ +#define CONFIG_MISC_INIT_R /* Call misc_init_r */ +#define CONFIG_BOARD_TYPES /* support board types */

/*----------------------------------------------------------------------- * Base addresses -- Note these are effective addresses where the @@ -134,7 +134,7 @@ *----------------------------------------------------------------------*/ #define CONFIG_SYS_FLASH_CFI /* The flash is CFI compatible */ #define CONFIG_FLASH_CFI_DRIVER /* Use common CFI driver */ -#define CONFIG_SYS_FLASH_CFI_AMD_RESET 1 /* Use AMD (Spansion) reset cmd */ +#define CONFIG_SYS_FLASH_CFI_AMD_RESET /* Use AMD (Spansion) reset cmd */

#define CONFIG_SYS_FLASH_BANKS_LIST {CONFIG_SYS_FLASH_BASE} #define CONFIG_SYS_MAX_FLASH_BANKS 1 /* max number of memory banks */ @@ -172,9 +172,9 @@ * I2C SPD DIMM autodetection/calibration doesn't fit into the 4k of boot * code. */ -#define CONFIG_SPD_EEPROM 1 /* Use SPD EEPROM for setup */ +#define CONFIG_SPD_EEPROM /* Use SPD EEPROM for setup */ #define SPD_EEPROM_ADDRESS {0x50, 0x51} /* SPD i2c spd addresses*/ -#define CONFIG_DDR_ECC 1 /* with ECC support */ +#define CONFIG_DDR_ECC /* with ECC support */ #define CONFIG_DDR_RQDC_FIXED 0x80000038 /* fixed value for RQDC */

#else /* defined(CONFIG_ARCHES) */ @@ -262,8 +262,8 @@ #define CONFIG_4xx_CONFIG_BLOCKSIZE 16

/* I2C SYSMON (LM75, AD7414 is almost compatible) */ -#define CONFIG_DTT_LM75 1 /* ON Semi's LM75 */ -#define CONFIG_DTT_AD7414 1 /* use AD7414 */ +#define CONFIG_DTT_LM75 /* ON Semi's LM75 */ +#define CONFIG_DTT_AD7414 /* use AD7414 */ #define CONFIG_DTT_SENSORS {0} /* Sensor addresses */ #define CONFIG_SYS_DTT_MAX_TEMP 70 #define CONFIG_SYS_DTT_LOW_TEMP -30 @@ -275,14 +275,14 @@

#if !defined(CONFIG_ARCHES) /* RTC configuration */ -#define CONFIG_RTC_M41T62 1 +#define CONFIG_RTC_M41T62 #define CONFIG_SYS_I2C_RTC_ADDR 0x68 #endif

/*----------------------------------------------------------------------- * Ethernet *----------------------------------------------------------------------*/ -#define CONFIG_IBM_EMAC4_V4 1 +#define CONFIG_IBM_EMAC4_V4

#define CONFIG_HAS_ETH0 #define CONFIG_HAS_ETH1 @@ -322,9 +322,9 @@ #define CONFIG_GPCS_PHY2_ADDR 0xC #endif /* !defined(CONFIG_ARCHES) */

-#define CONFIG_PHY_RESET 1 /* reset phy upon startup */ -#define CONFIG_PHY_GIGE 1 /* Include GbE speed/duplex detection */ -#define CONFIG_PHY_DYNAMIC_ANEG 1 +#define CONFIG_PHY_RESET /* reset phy upon startup */ +#define CONFIG_PHY_GIGE /* Include GbE speed/duplex detection */ +#define CONFIG_PHY_DYNAMIC_ANEG

/*----------------------------------------------------------------------- * USB-OHCI

From: Stefan Roese sr@denx.de

(NOT TO APPLY)

I'm really not sure why this doesn't work in the RAMBOOT case. But BSS is not cleared and because of this booting crashed / hangs at some stage later. Something with the GOT calculation / handling is incorrect.

To get this going for now, just clear the BSS again in the C code.

Signed-off-by: Stefan Roese sr@denx.de Signed-off-by: Simon Glass sjg@chromium.org ---

arch/powerpc/lib/board.c | 3 +++ common/board_r.c | 8 +++++++- 2 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/arch/powerpc/lib/board.c b/arch/powerpc/lib/board.c index e6d5355..2455e45 100644 --- a/arch/powerpc/lib/board.c +++ b/arch/powerpc/lib/board.c @@ -108,6 +108,7 @@ DECLARE_GLOBAL_DATA_PTR; extern ulong __init_end; extern ulong __bss_end; ulong monitor_flash_len; +extern ulong __bss_start;

#if defined(CONFIG_CMD_BEDBUG) #include <bedbug/type.h> @@ -611,6 +612,8 @@ void board_init_r(gd_t *id, ulong dest_addr) /* The Malloc area is immediately below the monitor copy in DRAM */ malloc_start = dest_addr - TOTAL_MALLOC_LEN;

+ memset(&__bss_start, 0, &__bss_end - &__bss_start); + #if defined(CONFIG_MPC85xx) || defined(CONFIG_MPC86xx) /* * The gd->arch.cpu pointer is set to an address in flash before diff --git a/common/board_r.c b/common/board_r.c index a301cc2..2f80425 100644 --- a/common/board_r.c +++ b/common/board_r.c @@ -1,4 +1,4 @@ -/* + /* * Copyright (c) 2011 The Chromium OS Authors. * (C) Copyright 2002-2006 * Wolfgang Denk, DENX Software Engineering, wd@denx.de. @@ -886,6 +886,12 @@ void board_init_r(gd_t *new_gd, ulong dest_addr) gd = new_gd; #endif

+#ifdef CONFIG_GLACIER + ulong bss_start = (ulong)&__bss_start; + ulong bss_end = (ulong)&__bss_end; + memset((void *)bss_start, 0, bss_end - bss_start); +#endif + #ifdef CONFIG_NEEDS_MANUAL_RELOC for (i = 0; i < ARRAY_SIZE(init_sequence_r); i++) init_sequence_r[i] += gd->reloc_off;

The canyonlands.h config file works with canyonlands, glacier and arches boards. Bring in the device tree files for these from Linux 3.17.

Signed-off-by: Simon Glass sjg@chromium.org ---

arch/powerpc/dts/Makefile | 11 + arch/powerpc/dts/arches.dts | 339 +++++++++++++++++++++++ arch/powerpc/dts/canyonlands.dts | 555 +++++++++++++++++++++++++++++++++++++ arch/powerpc/dts/glacier.dts | 579 +++++++++++++++++++++++++++++++++++++++ 4 files changed, 1484 insertions(+) create mode 100644 arch/powerpc/dts/Makefile create mode 100644 arch/powerpc/dts/arches.dts create mode 100644 arch/powerpc/dts/canyonlands.dts create mode 100644 arch/powerpc/dts/glacier.dts

diff --git a/arch/powerpc/dts/Makefile b/arch/powerpc/dts/Makefile new file mode 100644 index 0000000..ad104b9 --- /dev/null +++ b/arch/powerpc/dts/Makefile @@ -0,0 +1,11 @@ +dtb-$(CONFIG_TARGET_CANYONLANDS) += arches.dtb canyonlands.dtb glacier.dtb + +targets += $(dtb-y) + +DTC_FLAGS += -R 4 -p 0x1000 + +PHONY += dtbs +dtbs: $(addprefix $(obj)/, $(dtb-y)) + @: + +clean-files := *.dtb diff --git a/arch/powerpc/dts/arches.dts b/arch/powerpc/dts/arches.dts new file mode 100644 index 0000000..bd5ebfd --- /dev/null +++ b/arch/powerpc/dts/arches.dts @@ -0,0 +1,339 @@ +/* + * Device Tree Source for AMCC Arches (dual 460GT board) + * + * (C) Copyright 2008 Applied Micro Circuits Corporation + * Victor Gallardo vgallardo@amcc.com + * Adam Graham agraham@amcc.com + * + * Based on the glacier.dts file + * Stefan Roese sr@denx.de + * Copyright 2008 DENX Software Engineering + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +/dts-v1/; + +/ { + #address-cells = <2>; + #size-cells = <1>; + model = "amcc,arches"; + compatible = "amcc,arches"; + dcr-parent = <&{/cpus/cpu@0}>; + + aliases { + ethernet0 = &EMAC0; + ethernet1 = &EMAC1; + ethernet2 = &EMAC2; + serial0 = &UART0; + }; + + cpus { + #address-cells = <1>; + #size-cells = <0>; + + cpu@0 { + device_type = "cpu"; + model = "PowerPC,460GT"; + reg = <0x00000000>; + clock-frequency = <0>; /* Filled in by U-Boot */ + timebase-frequency = <0>; /* Filled in by U-Boot */ + i-cache-line-size = <32>; + d-cache-line-size = <32>; + i-cache-size = <32768>; + d-cache-size = <32768>; + dcr-controller; + dcr-access-method = "native"; + next-level-cache = <&L2C0>; + }; + }; + + memory { + device_type = "memory"; + reg = <0x00000000 0x00000000 0x00000000>; /* Filled in by U-Boot */ + }; + + UIC0: interrupt-controller0 { + compatible = "ibm,uic-460gt","ibm,uic"; + interrupt-controller; + cell-index = <0>; + dcr-reg = <0x0c0 0x009>; + #address-cells = <0>; + #size-cells = <0>; + #interrupt-cells = <2>; + }; + + UIC1: interrupt-controller1 { + compatible = "ibm,uic-460gt","ibm,uic"; + interrupt-controller; + cell-index = <1>; + dcr-reg = <0x0d0 0x009>; + #address-cells = <0>; + #size-cells = <0>; + #interrupt-cells = <2>; + interrupts = <0x1e 0x4 0x1f 0x4>; /* cascade */ + interrupt-parent = <&UIC0>; + }; + + UIC2: interrupt-controller2 { + compatible = "ibm,uic-460gt","ibm,uic"; + interrupt-controller; + cell-index = <2>; + dcr-reg = <0x0e0 0x009>; + #address-cells = <0>; + #size-cells = <0>; + #interrupt-cells = <2>; + interrupts = <0xa 0x4 0xb 0x4>; /* cascade */ + interrupt-parent = <&UIC0>; + }; + + UIC3: interrupt-controller3 { + compatible = "ibm,uic-460gt","ibm,uic"; + interrupt-controller; + cell-index = <3>; + dcr-reg = <0x0f0 0x009>; + #address-cells = <0>; + #size-cells = <0>; + #interrupt-cells = <2>; + interrupts = <0x10 0x4 0x11 0x4>; /* cascade */ + interrupt-parent = <&UIC0>; + }; + + SDR0: sdr { + compatible = "ibm,sdr-460gt"; + dcr-reg = <0x00e 0x002>; + }; + + CPR0: cpr { + compatible = "ibm,cpr-460gt"; + dcr-reg = <0x00c 0x002>; + }; + + L2C0: l2c { + compatible = "ibm,l2-cache-460gt", "ibm,l2-cache"; + dcr-reg = <0x020 0x008 /* Internal SRAM DCR's */ + 0x030 0x008>; /* L2 cache DCR's */ + cache-line-size = <32>; /* 32 bytes */ + cache-size = <262144>; /* L2, 256K */ + interrupt-parent = <&UIC1>; + interrupts = <11 1>; + }; + + plb { + compatible = "ibm,plb-460gt", "ibm,plb4"; + #address-cells = <2>; + #size-cells = <1>; + ranges; + clock-frequency = <0>; /* Filled in by U-Boot */ + + SDRAM0: sdram { + compatible = "ibm,sdram-460gt", "ibm,sdram-405gp"; + dcr-reg = <0x010 0x002>; + }; + + CRYPTO: crypto@180000 { + compatible = "amcc,ppc460gt-crypto", "amcc,ppc4xx-crypto"; + reg = <4 0x00180000 0x80400>; + interrupt-parent = <&UIC0>; + interrupts = <0x1d 0x4>; + }; + + MAL0: mcmal { + compatible = "ibm,mcmal-460gt", "ibm,mcmal2"; + dcr-reg = <0x180 0x062>; + num-tx-chans = <3>; + num-rx-chans = <24>; + #address-cells = <0>; + #size-cells = <0>; + interrupt-parent = <&UIC2>; + interrupts = < /*TXEOB*/ 0x6 0x4 + /*RXEOB*/ 0x7 0x4 + /*SERR*/ 0x3 0x4 + /*TXDE*/ 0x4 0x4 + /*RXDE*/ 0x5 0x4>; + desc-base-addr-high = <0x8>; + }; + + POB0: opb { + compatible = "ibm,opb-460gt", "ibm,opb"; + #address-cells = <1>; + #size-cells = <1>; + ranges = <0xb0000000 0x00000004 0xb0000000 0x50000000>; + clock-frequency = <0>; /* Filled in by U-Boot */ + + EBC0: ebc { + compatible = "ibm,ebc-460gt", "ibm,ebc"; + dcr-reg = <0x012 0x002>; + #address-cells = <2>; + #size-cells = <1>; + clock-frequency = <0>; /* Filled in by U-Boot */ + /* ranges property is supplied by U-Boot */ + interrupts = <0x6 0x4>; + interrupt-parent = <&UIC1>; + + nor_flash@0,0 { + compatible = "amd,s29gl256n", "cfi-flash"; + bank-width = <2>; + reg = <0x00000000 0x00000000 0x02000000>; + #address-cells = <1>; + #size-cells = <1>; + partition@0 { + label = "kernel"; + reg = <0x00000000 0x001e0000>; + }; + partition@1e0000 { + label = "dtb"; + reg = <0x001e0000 0x00020000>; + }; + partition@200000 { + label = "root"; + reg = <0x00200000 0x00200000>; + }; + partition@400000 { + label = "user"; + reg = <0x00400000 0x01b60000>; + }; + partition@1f60000 { + label = "env"; + reg = <0x01f60000 0x00040000>; + }; + partition@1fa0000 { + label = "u-boot"; + reg = <0x01fa0000 0x00060000>; + }; + }; + }; + + UART0: serial@ef600300 { + device_type = "serial"; + compatible = "ns16550"; + reg = <0xef600300 0x00000008>; + virtual-reg = <0xef600300>; + clock-frequency = <0>; /* Filled in by U-Boot */ + current-speed = <0>; /* Filled in by U-Boot */ + interrupt-parent = <&UIC1>; + interrupts = <0x1 0x4>; + }; + + IIC0: i2c@ef600700 { + compatible = "ibm,iic-460gt", "ibm,iic"; + reg = <0xef600700 0x00000014>; + interrupt-parent = <&UIC0>; + interrupts = <0x2 0x4>; + #address-cells = <1>; + #size-cells = <0>; + sttm@4a { + compatible = "ad,ad7414"; + reg = <0x4a>; + interrupt-parent = <&UIC1>; + interrupts = <0x0 0x8>; + }; + }; + + IIC1: i2c@ef600800 { + compatible = "ibm,iic-460gt", "ibm,iic"; + reg = <0xef600800 0x00000014>; + interrupt-parent = <&UIC0>; + interrupts = <0x3 0x4>; + }; + + TAH0: emac-tah@ef601350 { + compatible = "ibm,tah-460gt", "ibm,tah"; + reg = <0xef601350 0x00000030>; + }; + + TAH1: emac-tah@ef601450 { + compatible = "ibm,tah-460gt", "ibm,tah"; + reg = <0xef601450 0x00000030>; + }; + + EMAC0: ethernet@ef600e00 { + device_type = "network"; + compatible = "ibm,emac-460gt", "ibm,emac4sync"; + interrupt-parent = <&EMAC0>; + interrupts = <0x0 0x1>; + #interrupt-cells = <1>; + #address-cells = <0>; + #size-cells = <0>; + interrupt-map = </*Status*/ 0x0 &UIC2 0x10 0x4 + /*Wake*/ 0x1 &UIC2 0x14 0x4>; + reg = <0xef600e00 0x000000c4>; + local-mac-address = [000000000000]; /* Filled in by U-Boot */ + mal-device = <&MAL0>; + mal-tx-channel = <0>; + mal-rx-channel = <0>; + cell-index = <0>; + max-frame-size = <9000>; + rx-fifo-size = <4096>; + tx-fifo-size = <2048>; + rx-fifo-size-gige = <16384>; + phy-mode = "sgmii"; + phy-map = <0xffffffff>; + gpcs-address = <0x0000000a>; + tah-device = <&TAH0>; + tah-channel = <0>; + has-inverted-stacr-oc; + has-new-stacr-staopc; + }; + + EMAC1: ethernet@ef600f00 { + device_type = "network"; + compatible = "ibm,emac-460gt", "ibm,emac4sync"; + interrupt-parent = <&EMAC1>; + interrupts = <0x0 0x1>; + #interrupt-cells = <1>; + #address-cells = <0>; + #size-cells = <0>; + interrupt-map = </*Status*/ 0x0 &UIC2 0x11 0x4 + /*Wake*/ 0x1 &UIC2 0x15 0x4>; + reg = <0xef600f00 0x000000c4>; + local-mac-address = [000000000000]; /* Filled in by U-Boot */ + mal-device = <&MAL0>; + mal-tx-channel = <1>; + mal-rx-channel = <8>; + cell-index = <1>; + max-frame-size = <9000>; + rx-fifo-size = <4096>; + tx-fifo-size = <2048>; + rx-fifo-size-gige = <16384>; + phy-mode = "sgmii"; + phy-map = <0x00000000>; + gpcs-address = <0x0000000b>; + tah-device = <&TAH1>; + tah-channel = <1>; + has-inverted-stacr-oc; + has-new-stacr-staopc; + mdio-device = <&EMAC0>; + }; + + EMAC2: ethernet@ef601100 { + device_type = "network"; + compatible = "ibm,emac-460gt", "ibm,emac4sync"; + interrupt-parent = <&EMAC2>; + interrupts = <0x0 0x1>; + #interrupt-cells = <1>; + #address-cells = <0>; + #size-cells = <0>; + interrupt-map = </*Status*/ 0x0 &UIC2 0x12 0x4 + /*Wake*/ 0x1 &UIC2 0x16 0x4>; + reg = <0xef601100 0x000000c4>; + local-mac-address = [000000000000]; /* Filled in by U-Boot */ + mal-device = <&MAL0>; + mal-tx-channel = <2>; + mal-rx-channel = <16>; + cell-index = <2>; + max-frame-size = <9000>; + rx-fifo-size = <4096>; + tx-fifo-size = <2048>; + rx-fifo-size-gige = <16384>; + tx-fifo-size-gige = <16384>; /* emac2&3 only */ + phy-mode = "sgmii"; + phy-map = <0x00000001>; + gpcs-address = <0x0000000C>; + has-inverted-stacr-oc; + has-new-stacr-staopc; + mdio-device = <&EMAC0>; + }; + }; + }; +}; diff --git a/arch/powerpc/dts/canyonlands.dts b/arch/powerpc/dts/canyonlands.dts new file mode 100644 index 0000000..2ec9762 --- /dev/null +++ b/arch/powerpc/dts/canyonlands.dts @@ -0,0 +1,555 @@ +/* + * Device Tree Source for AMCC Canyonlands (460EX) + * + * Copyright 2008-2009 DENX Software Engineering, Stefan Roese sr@denx.de + * + * SPDX-License-Identifier: GPL-2.0 + */ + +/dts-v1/; + +/ { + #address-cells = <2>; + #size-cells = <1>; + model = "amcc,canyonlands"; + compatible = "amcc,canyonlands"; + dcr-parent = <&{/cpus/cpu@0}>; + + aliases { + ethernet0 = &EMAC0; + ethernet1 = &EMAC1; + serial0 = &UART0; + serial1 = &UART1; + }; + + cpus { + #address-cells = <1>; + #size-cells = <0>; + + cpu@0 { + device_type = "cpu"; + model = "PowerPC,460EX"; + reg = <0x00000000>; + clock-frequency = <0>; /* Filled in by U-Boot */ + timebase-frequency = <0>; /* Filled in by U-Boot */ + i-cache-line-size = <32>; + d-cache-line-size = <32>; + i-cache-size = <32768>; + d-cache-size = <32768>; + dcr-controller; + dcr-access-method = "native"; + next-level-cache = <&L2C0>; + }; + }; + + memory { + device_type = "memory"; + reg = <0x00000000 0x00000000 0x00000000>; /* Filled in by U-Boot */ + }; + + UIC0: interrupt-controller0 { + compatible = "ibm,uic-460ex","ibm,uic"; + interrupt-controller; + cell-index = <0>; + dcr-reg = <0x0c0 0x009>; + #address-cells = <0>; + #size-cells = <0>; + #interrupt-cells = <2>; + }; + + UIC1: interrupt-controller1 { + compatible = "ibm,uic-460ex","ibm,uic"; + interrupt-controller; + cell-index = <1>; + dcr-reg = <0x0d0 0x009>; + #address-cells = <0>; + #size-cells = <0>; + #interrupt-cells = <2>; + interrupts = <0x1e 0x4 0x1f 0x4>; /* cascade */ + interrupt-parent = <&UIC0>; + }; + + UIC2: interrupt-controller2 { + compatible = "ibm,uic-460ex","ibm,uic"; + interrupt-controller; + cell-index = <2>; + dcr-reg = <0x0e0 0x009>; + #address-cells = <0>; + #size-cells = <0>; + #interrupt-cells = <2>; + interrupts = <0xa 0x4 0xb 0x4>; /* cascade */ + interrupt-parent = <&UIC0>; + }; + + UIC3: interrupt-controller3 { + compatible = "ibm,uic-460ex","ibm,uic"; + interrupt-controller; + cell-index = <3>; + dcr-reg = <0x0f0 0x009>; + #address-cells = <0>; + #size-cells = <0>; + #interrupt-cells = <2>; + interrupts = <0x10 0x4 0x11 0x4>; /* cascade */ + interrupt-parent = <&UIC0>; + }; + + SDR0: sdr { + compatible = "ibm,sdr-460ex"; + dcr-reg = <0x00e 0x002>; + }; + + CPR0: cpr { + compatible = "ibm,cpr-460ex"; + dcr-reg = <0x00c 0x002>; + }; + + CPM0: cpm { + compatible = "ibm,cpm"; + dcr-access-method = "native"; + dcr-reg = <0x160 0x003>; + unused-units = <0x00000100>; + idle-doze = <0x02000000>; + standby = <0xfeff791d>; + }; + + L2C0: l2c { + compatible = "ibm,l2-cache-460ex", "ibm,l2-cache"; + dcr-reg = <0x020 0x008 /* Internal SRAM DCR's */ + 0x030 0x008>; /* L2 cache DCR's */ + cache-line-size = <32>; /* 32 bytes */ + cache-size = <262144>; /* L2, 256K */ + interrupt-parent = <&UIC1>; + interrupts = <11 1>; + }; + + plb { + compatible = "ibm,plb-460ex", "ibm,plb4"; + #address-cells = <2>; + #size-cells = <1>; + ranges; + clock-frequency = <0>; /* Filled in by U-Boot */ + + SDRAM0: sdram { + compatible = "ibm,sdram-460ex", "ibm,sdram-405gp"; + dcr-reg = <0x010 0x002>; + }; + + CRYPTO: crypto@180000 { + compatible = "amcc,ppc460ex-crypto", "amcc,ppc4xx-crypto"; + reg = <4 0x00180000 0x80400>; + interrupt-parent = <&UIC0>; + interrupts = <0x1d 0x4>; + }; + + HWRNG: hwrng@110000 { + compatible = "amcc,ppc460ex-rng", "ppc4xx-rng"; + reg = <4 0x00110000 0x50>; + }; + + MAL0: mcmal { + compatible = "ibm,mcmal-460ex", "ibm,mcmal2"; + dcr-reg = <0x180 0x062>; + num-tx-chans = <2>; + num-rx-chans = <16>; + #address-cells = <0>; + #size-cells = <0>; + interrupt-parent = <&UIC2>; + interrupts = < /*TXEOB*/ 0x6 0x4 + /*RXEOB*/ 0x7 0x4 + /*SERR*/ 0x3 0x4 + /*TXDE*/ 0x4 0x4 + /*RXDE*/ 0x5 0x4>; + }; + + USB0: ehci@bffd0400 { + compatible = "ibm,usb-ehci-460ex", "usb-ehci"; + interrupt-parent = <&UIC2>; + interrupts = <0x1d 4>; + reg = <4 0xbffd0400 0x90 4 0xbffd0490 0x70>; + }; + + USB1: usb@bffd0000 { + compatible = "ohci-le"; + reg = <4 0xbffd0000 0x60>; + interrupt-parent = <&UIC2>; + interrupts = <0x1e 4>; + }; + + USBOTG0: usbotg@bff80000 { + compatible = "amcc,dwc-otg"; + reg = <0x4 0xbff80000 0x10000>; + interrupt-parent = <&USBOTG0>; + #interrupt-cells = <1>; + #address-cells = <0>; + #size-cells = <0>; + interrupts = <0x0 0x1 0x2>; + interrupt-map = </* USB-OTG */ 0x0 &UIC2 0x1c 0x4 + /* HIGH-POWER */ 0x1 &UIC1 0x1a 0x8 + /* DMA */ 0x2 &UIC0 0xc 0x4>; + }; + + SATA0: sata@bffd1000 { + compatible = "amcc,sata-460ex"; + reg = <4 0xbffd1000 0x800 4 0xbffd0800 0x400>; + interrupt-parent = <&UIC3>; + interrupts = <0x0 0x4 /* SATA */ + 0x5 0x4>; /* AHBDMA */ + }; + + POB0: opb { + compatible = "ibm,opb-460ex", "ibm,opb"; + #address-cells = <1>; + #size-cells = <1>; + ranges = <0xb0000000 0x00000004 0xb0000000 0x50000000>; + clock-frequency = <0>; /* Filled in by U-Boot */ + + EBC0: ebc { + compatible = "ibm,ebc-460ex", "ibm,ebc"; + dcr-reg = <0x012 0x002>; + #address-cells = <2>; + #size-cells = <1>; + clock-frequency = <0>; /* Filled in by U-Boot */ + /* ranges property is supplied by U-Boot */ + interrupts = <0x6 0x4>; + interrupt-parent = <&UIC1>; + + nor_flash@0,0 { + compatible = "amd,s29gl512n", "cfi-flash"; + bank-width = <2>; + reg = <0x00000000 0x00000000 0x04000000>; + #address-cells = <1>; + #size-cells = <1>; + partition@0 { + label = "kernel"; + reg = <0x00000000 0x001e0000>; + }; + partition@1e0000 { + label = "dtb"; + reg = <0x001e0000 0x00020000>; + }; + partition@200000 { + label = "ramdisk"; + reg = <0x00200000 0x01400000>; + }; + partition@1600000 { + label = "jffs2"; + reg = <0x01600000 0x00400000>; + }; + partition@1a00000 { + label = "user"; + reg = <0x01a00000 0x02560000>; + }; + partition@3f60000 { + label = "env"; + reg = <0x03f60000 0x00040000>; + }; + partition@3fa0000 { + label = "u-boot"; + reg = <0x03fa0000 0x00060000>; + }; + }; + + cpld@2,0 { + compatible = "amcc,ppc460ex-bcsr"; + reg = <2 0x0 0x9>; + }; + + ndfc@3,0 { + compatible = "ibm,ndfc"; + reg = <0x00000003 0x00000000 0x00002000>; + ccr = <0x00001000>; + bank-settings = <0x80002222>; + #address-cells = <1>; + #size-cells = <1>; + + nand { + #address-cells = <1>; + #size-cells = <1>; + + partition@0 { + label = "u-boot"; + reg = <0x00000000 0x00100000>; + }; + partition@100000 { + label = "user"; + reg = <0x00000000 0x03f00000>; + }; + }; + }; + }; + + UART0: serial@ef600300 { + device_type = "serial"; + compatible = "ns16550"; + reg = <0xef600300 0x00000008>; + virtual-reg = <0xef600300>; + clock-frequency = <0>; /* Filled in by U-Boot */ + current-speed = <0>; /* Filled in by U-Boot */ + interrupt-parent = <&UIC1>; + interrupts = <0x1 0x4>; + }; + + UART1: serial@ef600400 { + device_type = "serial"; + compatible = "ns16550"; + reg = <0xef600400 0x00000008>; + virtual-reg = <0xef600400>; + clock-frequency = <0>; /* Filled in by U-Boot */ + current-speed = <0>; /* Filled in by U-Boot */ + interrupt-parent = <&UIC0>; + interrupts = <0x1 0x4>; + }; + + IIC0: i2c@ef600700 { + compatible = "ibm,iic-460ex", "ibm,iic"; + reg = <0xef600700 0x00000014>; + interrupt-parent = <&UIC0>; + interrupts = <0x2 0x4>; + #address-cells = <1>; + #size-cells = <0>; + rtc@68 { + compatible = "stm,m41t80"; + reg = <0x68>; + interrupt-parent = <&UIC2>; + interrupts = <0x19 0x8>; + }; + sttm@48 { + compatible = "ad,ad7414"; + reg = <0x48>; + interrupt-parent = <&UIC1>; + interrupts = <0x14 0x8>; + }; + }; + + IIC1: i2c@ef600800 { + compatible = "ibm,iic-460ex", "ibm,iic"; + reg = <0xef600800 0x00000014>; + interrupt-parent = <&UIC0>; + interrupts = <0x3 0x4>; + }; + + GPIO0: gpio@ef600b00 { + compatible = "ibm,ppc4xx-gpio"; + reg = <0xef600b00 0x00000048>; + gpio-controller; + }; + + ZMII0: emac-zmii@ef600d00 { + compatible = "ibm,zmii-460ex", "ibm,zmii"; + reg = <0xef600d00 0x0000000c>; + }; + + RGMII0: emac-rgmii@ef601500 { + compatible = "ibm,rgmii-460ex", "ibm,rgmii"; + reg = <0xef601500 0x00000008>; + has-mdio; + }; + + TAH0: emac-tah@ef601350 { + compatible = "ibm,tah-460ex", "ibm,tah"; + reg = <0xef601350 0x00000030>; + }; + + TAH1: emac-tah@ef601450 { + compatible = "ibm,tah-460ex", "ibm,tah"; + reg = <0xef601450 0x00000030>; + }; + + EMAC0: ethernet@ef600e00 { + device_type = "network"; + compatible = "ibm,emac-460ex", "ibm,emac4sync"; + interrupt-parent = <&EMAC0>; + interrupts = <0x0 0x1>; + #interrupt-cells = <1>; + #address-cells = <0>; + #size-cells = <0>; + interrupt-map = </*Status*/ 0x0 &UIC2 0x10 0x4 + /*Wake*/ 0x1 &UIC2 0x14 0x4>; + reg = <0xef600e00 0x000000c4>; + local-mac-address = [000000000000]; /* Filled in by U-Boot */ + mal-device = <&MAL0>; + mal-tx-channel = <0>; + mal-rx-channel = <0>; + cell-index = <0>; + max-frame-size = <9000>; + rx-fifo-size = <4096>; + tx-fifo-size = <2048>; + rx-fifo-size-gige = <16384>; + phy-mode = "rgmii"; + phy-map = <0x00000000>; + rgmii-device = <&RGMII0>; + rgmii-channel = <0>; + tah-device = <&TAH0>; + tah-channel = <0>; + has-inverted-stacr-oc; + has-new-stacr-staopc; + }; + + EMAC1: ethernet@ef600f00 { + device_type = "network"; + compatible = "ibm,emac-460ex", "ibm,emac4sync"; + interrupt-parent = <&EMAC1>; + interrupts = <0x0 0x1>; + #interrupt-cells = <1>; + #address-cells = <0>; + #size-cells = <0>; + interrupt-map = </*Status*/ 0x0 &UIC2 0x11 0x4 + /*Wake*/ 0x1 &UIC2 0x15 0x4>; + reg = <0xef600f00 0x000000c4>; + local-mac-address = [000000000000]; /* Filled in by U-Boot */ + mal-device = <&MAL0>; + mal-tx-channel = <1>; + mal-rx-channel = <8>; + cell-index = <1>; + max-frame-size = <9000>; + rx-fifo-size = <4096>; + tx-fifo-size = <2048>; + rx-fifo-size-gige = <16384>; + phy-mode = "rgmii"; + phy-map = <0x00000000>; + rgmii-device = <&RGMII0>; + rgmii-channel = <1>; + tah-device = <&TAH1>; + tah-channel = <1>; + has-inverted-stacr-oc; + has-new-stacr-staopc; + mdio-device = <&EMAC0>; + }; + }; + + PCIX0: pci@c0ec00000 { + device_type = "pci"; + #interrupt-cells = <1>; + #size-cells = <2>; + #address-cells = <3>; + compatible = "ibm,plb-pcix-460ex", "ibm,plb-pcix"; + primary; + large-inbound-windows; + enable-msi-hole; + reg = <0x0000000c 0x0ec00000 0x00000008 /* Config space access */ + 0x00000000 0x00000000 0x00000000 /* no IACK cycles */ + 0x0000000c 0x0ed00000 0x00000004 /* Special cycles */ + 0x0000000c 0x0ec80000 0x00000100 /* Internal registers */ + 0x0000000c 0x0ec80100 0x000000fc>; /* Internal messaging registers */ + + /* Outbound ranges, one memory and one IO, + * later cannot be changed + */ + ranges = <0x02000000 0x00000000 0x80000000 0x0000000d 0x80000000 0x00000000 0x80000000 + 0x02000000 0x00000000 0x00000000 0x0000000c 0x0ee00000 0x00000000 0x00100000 + 0x01000000 0x00000000 0x00000000 0x0000000c 0x08000000 0x00000000 0x00010000>; + + /* Inbound 2GB range starting at 0 */ + dma-ranges = <0x42000000 0x0 0x0 0x0 0x0 0x0 0x80000000>; + + /* This drives busses 0 to 0x3f */ + bus-range = <0x0 0x3f>; + + /* All PCI interrupts are routed to ext IRQ 2 -> UIC1-0 */ + interrupt-map-mask = <0x0 0x0 0x0 0x0>; + interrupt-map = < 0x0 0x0 0x0 0x0 &UIC1 0x0 0x8 >; + }; + + PCIE0: pciex@d00000000 { + device_type = "pci"; + #interrupt-cells = <1>; + #size-cells = <2>; + #address-cells = <3>; + compatible = "ibm,plb-pciex-460ex", "ibm,plb-pciex"; + primary; + port = <0x0>; /* port number */ + reg = <0x0000000d 0x00000000 0x20000000 /* Config space access */ + 0x0000000c 0x08010000 0x00001000>; /* Registers */ + dcr-reg = <0x100 0x020>; + sdr-base = <0x300>; + + /* Outbound ranges, one memory and one IO, + * later cannot be changed + */ + ranges = <0x02000000 0x00000000 0x80000000 0x0000000e 0x00000000 0x00000000 0x80000000 + 0x02000000 0x00000000 0x00000000 0x0000000f 0x00000000 0x00000000 0x00100000 + 0x01000000 0x00000000 0x00000000 0x0000000f 0x80000000 0x00000000 0x00010000>; + + /* Inbound 2GB range starting at 0 */ + dma-ranges = <0x42000000 0x0 0x0 0x0 0x0 0x0 0x80000000>; + + /* This drives busses 40 to 0x7f */ + bus-range = <0x40 0x7f>; + + /* Legacy interrupts (note the weird polarity, the bridge seems + * to invert PCIe legacy interrupts). + * We are de-swizzling here because the numbers are actually for + * port of the root complex virtual P2P bridge. But I want + * to avoid putting a node for it in the tree, so the numbers + * below are basically de-swizzled numbers. + * The real slot is on idsel 0, so the swizzling is 1:1 + */ + interrupt-map-mask = <0x0 0x0 0x0 0x7>; + interrupt-map = < + 0x0 0x0 0x0 0x1 &UIC3 0xc 0x4 /* swizzled int A */ + 0x0 0x0 0x0 0x2 &UIC3 0xd 0x4 /* swizzled int B */ + 0x0 0x0 0x0 0x3 &UIC3 0xe 0x4 /* swizzled int C */ + 0x0 0x0 0x0 0x4 &UIC3 0xf 0x4 /* swizzled int D */>; + }; + + PCIE1: pciex@d20000000 { + device_type = "pci"; + #interrupt-cells = <1>; + #size-cells = <2>; + #address-cells = <3>; + compatible = "ibm,plb-pciex-460ex", "ibm,plb-pciex"; + primary; + port = <0x1>; /* port number */ + reg = <0x0000000d 0x20000000 0x20000000 /* Config space access */ + 0x0000000c 0x08011000 0x00001000>; /* Registers */ + dcr-reg = <0x120 0x020>; + sdr-base = <0x340>; + + /* Outbound ranges, one memory and one IO, + * later cannot be changed + */ + ranges = <0x02000000 0x00000000 0x80000000 0x0000000e 0x80000000 0x00000000 0x80000000 + 0x02000000 0x00000000 0x00000000 0x0000000f 0x00100000 0x00000000 0x00100000 + 0x01000000 0x00000000 0x00000000 0x0000000f 0x80010000 0x00000000 0x00010000>; + + /* Inbound 2GB range starting at 0 */ + dma-ranges = <0x42000000 0x0 0x0 0x0 0x0 0x0 0x80000000>; + + /* This drives busses 80 to 0xbf */ + bus-range = <0x80 0xbf>; + + /* Legacy interrupts (note the weird polarity, the bridge seems + * to invert PCIe legacy interrupts). + * We are de-swizzling here because the numbers are actually for + * port of the root complex virtual P2P bridge. But I want + * to avoid putting a node for it in the tree, so the numbers + * below are basically de-swizzled numbers. + * The real slot is on idsel 0, so the swizzling is 1:1 + */ + interrupt-map-mask = <0x0 0x0 0x0 0x7>; + interrupt-map = < + 0x0 0x0 0x0 0x1 &UIC3 0x10 0x4 /* swizzled int A */ + 0x0 0x0 0x0 0x2 &UIC3 0x11 0x4 /* swizzled int B */ + 0x0 0x0 0x0 0x3 &UIC3 0x12 0x4 /* swizzled int C */ + 0x0 0x0 0x0 0x4 &UIC3 0x13 0x4 /* swizzled int D */>; + }; + + MSI: ppc4xx-msi@C10000000 { + compatible = "amcc,ppc4xx-msi", "ppc4xx-msi"; + reg = < 0xC 0x10000000 0x100>; + sdr-base = <0x36C>; + msi-data = <0x00000000>; + msi-mask = <0x44440000>; + interrupt-count = <3>; + interrupts = <0 1 2 3>; + interrupt-parent = <&UIC3>; + #interrupt-cells = <1>; + #address-cells = <0>; + #size-cells = <0>; + interrupt-map = <0 &UIC3 0x18 1 + 1 &UIC3 0x19 1 + 2 &UIC3 0x1A 1 + 3 &UIC3 0x1B 1>; + }; + }; +}; diff --git a/arch/powerpc/dts/glacier.dts b/arch/powerpc/dts/glacier.dts new file mode 100644 index 0000000..3e7ce2c --- /dev/null +++ b/arch/powerpc/dts/glacier.dts @@ -0,0 +1,579 @@ +/* + * Device Tree Source for AMCC Glacier (460GT) + * + * Copyright 2008-2010 DENX Software Engineering, Stefan Roese sr@denx.de + * + * SPDX-License-Identifier: GPL-2.0 + */ + +/dts-v1/; + +/ { + #address-cells = <2>; + #size-cells = <1>; + model = "amcc,glacier"; + compatible = "amcc,glacier"; + dcr-parent = <&{/cpus/cpu@0}>; + + aliases { + ethernet0 = &EMAC0; + ethernet1 = &EMAC1; + ethernet2 = &EMAC2; + ethernet3 = &EMAC3; + serial0 = &UART0; + serial1 = &UART1; + }; + + chosen { + stdout-path = &UART0; + }; + + cpus { + #address-cells = <1>; + #size-cells = <0>; + + cpu@0 { + device_type = "cpu"; + model = "PowerPC,460GT"; + reg = <0x00000000>; + clock-frequency = <0>; /* Filled in by U-Boot */ + timebase-frequency = <0>; /* Filled in by U-Boot */ + i-cache-line-size = <32>; + d-cache-line-size = <32>; + i-cache-size = <32768>; + d-cache-size = <32768>; + dcr-controller; + dcr-access-method = "native"; + next-level-cache = <&L2C0>; + }; + }; + + memory { + device_type = "memory"; + reg = <0x00000000 0x00000000 0x00000000>; /* Filled in by U-Boot */ + }; + + UIC0: interrupt-controller0 { + compatible = "ibm,uic-460gt","ibm,uic"; + interrupt-controller; + cell-index = <0>; + dcr-reg = <0x0c0 0x009>; + #address-cells = <0>; + #size-cells = <0>; + #interrupt-cells = <2>; + }; + + UIC1: interrupt-controller1 { + compatible = "ibm,uic-460gt","ibm,uic"; + interrupt-controller; + cell-index = <1>; + dcr-reg = <0x0d0 0x009>; + #address-cells = <0>; + #size-cells = <0>; + #interrupt-cells = <2>; + interrupts = <0x1e 0x4 0x1f 0x4>; /* cascade */ + interrupt-parent = <&UIC0>; + }; + + UIC2: interrupt-controller2 { + compatible = "ibm,uic-460gt","ibm,uic"; + interrupt-controller; + cell-index = <2>; + dcr-reg = <0x0e0 0x009>; + #address-cells = <0>; + #size-cells = <0>; + #interrupt-cells = <2>; + interrupts = <0xa 0x4 0xb 0x4>; /* cascade */ + interrupt-parent = <&UIC0>; + }; + + UIC3: interrupt-controller3 { + compatible = "ibm,uic-460gt","ibm,uic"; + interrupt-controller; + cell-index = <3>; + dcr-reg = <0x0f0 0x009>; + #address-cells = <0>; + #size-cells = <0>; + #interrupt-cells = <2>; + interrupts = <0x10 0x4 0x11 0x4>; /* cascade */ + interrupt-parent = <&UIC0>; + }; + + SDR0: sdr { + compatible = "ibm,sdr-460gt"; + dcr-reg = <0x00e 0x002>; + }; + + CPR0: cpr { + compatible = "ibm,cpr-460gt"; + dcr-reg = <0x00c 0x002>; + }; + + L2C0: l2c { + compatible = "ibm,l2-cache-460gt", "ibm,l2-cache"; + dcr-reg = <0x020 0x008 /* Internal SRAM DCR's */ + 0x030 0x008>; /* L2 cache DCR's */ + cache-line-size = <32>; /* 32 bytes */ + cache-size = <262144>; /* L2, 256K */ + interrupt-parent = <&UIC1>; + interrupts = <11 1>; + }; + + plb { + compatible = "ibm,plb-460gt", "ibm,plb4"; + #address-cells = <2>; + #size-cells = <1>; + ranges; + clock-frequency = <0>; /* Filled in by U-Boot */ + + SDRAM0: sdram { + compatible = "ibm,sdram-460gt", "ibm,sdram-405gp"; + dcr-reg = <0x010 0x002>; + }; + + CRYPTO: crypto@180000 { + compatible = "amcc,ppc460gt-crypto", "amcc,ppc460ex-crypto", + "amcc,ppc4xx-crypto"; + reg = <4 0x00180000 0x80400>; + interrupt-parent = <&UIC0>; + interrupts = <0x1d 0x4>; + }; + + HWRNG: hwrng@110000 { + compatible = "amcc,ppc460ex-rng", "ppc4xx-rng"; + reg = <4 0x00110000 0x50>; + }; + + MAL0: mcmal { + compatible = "ibm,mcmal-460gt", "ibm,mcmal2"; + dcr-reg = <0x180 0x062>; + num-tx-chans = <4>; + num-rx-chans = <32>; + #address-cells = <0>; + #size-cells = <0>; + interrupt-parent = <&UIC2>; + interrupts = < /*TXEOB*/ 0x6 0x4 + /*RXEOB*/ 0x7 0x4 + /*SERR*/ 0x3 0x4 + /*TXDE*/ 0x4 0x4 + /*RXDE*/ 0x5 0x4>; + desc-base-addr-high = <0x8>; + }; + + POB0: opb { + compatible = "ibm,opb-460gt", "ibm,opb"; + #address-cells = <1>; + #size-cells = <1>; + ranges = <0xb0000000 0x00000004 0xb0000000 0x50000000>; + clock-frequency = <0>; /* Filled in by U-Boot */ + + EBC0: ebc { + compatible = "ibm,ebc-460gt", "ibm,ebc"; + dcr-reg = <0x012 0x002>; + #address-cells = <2>; + #size-cells = <1>; + clock-frequency = <0>; /* Filled in by U-Boot */ + /* ranges property is supplied by U-Boot */ + interrupts = <0x6 0x4>; + interrupt-parent = <&UIC1>; + + nor_flash@0,0 { + compatible = "amd,s29gl512n", "cfi-flash"; + bank-width = <2>; + reg = <0x00000000 0x00000000 0x04000000>; + #address-cells = <1>; + #size-cells = <1>; + partition@0 { + label = "kernel"; + reg = <0x00000000 0x001e0000>; + }; + partition@1e0000 { + label = "dtb"; + reg = <0x001e0000 0x00020000>; + }; + partition@200000 { + label = "ramdisk"; + reg = <0x00200000 0x01400000>; + }; + partition@1600000 { + label = "jffs2"; + reg = <0x01600000 0x00400000>; + }; + partition@1a00000 { + label = "user"; + reg = <0x01a00000 0x02560000>; + }; + partition@3f60000 { + label = "env"; + reg = <0x03f60000 0x00040000>; + }; + partition@3fa0000 { + label = "u-boot"; + reg = <0x03fa0000 0x00060000>; + }; + }; + + ndfc@3,0 { + compatible = "ibm,ndfc"; + reg = <0x00000003 0x00000000 0x00002000>; + ccr = <0x00001000>; + bank-settings = <0x80002222>; + #address-cells = <1>; + #size-cells = <1>; + + nand { + #address-cells = <1>; + #size-cells = <1>; + + partition@0 { + label = "u-boot"; + reg = <0x00000000 0x00100000>; + }; + partition@100000 { + label = "user"; + reg = <0x00000000 0x03f00000>; + }; + }; + }; + }; + + UART0: serial@ef600300 { + device_type = "serial"; + reg-shift = <0>; + compatible = "ns16550"; + reg = <0xef600300 0x00000008>; + virtual-reg = <0xef600300>; + clock-frequency = <0>; /* Filled in by U-Boot */ + current-speed = <0>; /* Filled in by U-Boot */ + interrupt-parent = <&UIC1>; + interrupts = <0x1 0x4>; + }; + + UART1: serial@ef600400 { + device_type = "serial"; + compatible = "ns16550"; + reg = <0xef600400 0x00000008>; + virtual-reg = <0xef600400>; + clock-frequency = <0>; /* Filled in by U-Boot */ + current-speed = <0>; /* Filled in by U-Boot */ + interrupt-parent = <&UIC0>; + interrupts = <0x1 0x4>; + }; + + UART2: serial@ef600500 { + device_type = "serial"; + compatible = "ns16550"; + reg = <0xef600500 0x00000008>; + virtual-reg = <0xef600500>; + clock-frequency = <0>; /* Filled in by U-Boot */ + current-speed = <0>; /* Filled in by U-Boot */ + interrupt-parent = <&UIC1>; + interrupts = <28 0x4>; + }; + + UART3: serial@ef600600 { + device_type = "serial"; + compatible = "ns16550"; + reg = <0xef600600 0x00000008>; + virtual-reg = <0xef600600>; + clock-frequency = <0>; /* Filled in by U-Boot */ + current-speed = <0>; /* Filled in by U-Boot */ + interrupt-parent = <&UIC1>; + interrupts = <29 0x4>; + }; + + IIC0: i2c@ef600700 { + compatible = "ibm,iic-460gt", "ibm,iic"; + reg = <0xef600700 0x00000014>; + interrupt-parent = <&UIC0>; + interrupts = <0x2 0x4>; + #address-cells = <1>; + #size-cells = <0>; + rtc@68 { + compatible = "stm,m41t80"; + reg = <0x68>; + interrupt-parent = <&UIC2>; + interrupts = <0x19 0x8>; + }; + sttm@48 { + compatible = "ad,ad7414"; + reg = <0x48>; + interrupt-parent = <&UIC1>; + interrupts = <0x14 0x8>; + }; + }; + + IIC1: i2c@ef600800 { + compatible = "ibm,iic-460gt", "ibm,iic"; + reg = <0xef600800 0x00000014>; + interrupt-parent = <&UIC0>; + interrupts = <0x3 0x4>; + }; + + ZMII0: emac-zmii@ef600d00 { + compatible = "ibm,zmii-460gt", "ibm,zmii"; + reg = <0xef600d00 0x0000000c>; + }; + + RGMII0: emac-rgmii@ef601500 { + compatible = "ibm,rgmii-460gt", "ibm,rgmii"; + reg = <0xef601500 0x00000008>; + has-mdio; + }; + + RGMII1: emac-rgmii@ef601600 { + compatible = "ibm,rgmii-460gt", "ibm,rgmii"; + reg = <0xef601600 0x00000008>; + has-mdio; + }; + + TAH0: emac-tah@ef601350 { + compatible = "ibm,tah-460gt", "ibm,tah"; + reg = <0xef601350 0x00000030>; + }; + + TAH1: emac-tah@ef601450 { + compatible = "ibm,tah-460gt", "ibm,tah"; + reg = <0xef601450 0x00000030>; + }; + + EMAC0: ethernet@ef600e00 { + device_type = "network"; + compatible = "ibm,emac-460gt", "ibm,emac4sync"; + interrupt-parent = <&EMAC0>; + interrupts = <0x0 0x1>; + #interrupt-cells = <1>; + #address-cells = <0>; + #size-cells = <0>; + interrupt-map = </*Status*/ 0x0 &UIC2 0x10 0x4 + /*Wake*/ 0x1 &UIC2 0x14 0x4>; + reg = <0xef600e00 0x000000c4>; + local-mac-address = [000000000000]; /* Filled in by U-Boot */ + mal-device = <&MAL0>; + mal-tx-channel = <0>; + mal-rx-channel = <0>; + cell-index = <0>; + max-frame-size = <9000>; + rx-fifo-size = <4096>; + tx-fifo-size = <2048>; + rx-fifo-size-gige = <16384>; + phy-mode = "rgmii"; + phy-map = <0x00000000>; + rgmii-device = <&RGMII0>; + rgmii-channel = <0>; + tah-device = <&TAH0>; + tah-channel = <0>; + has-inverted-stacr-oc; + has-new-stacr-staopc; + }; + + EMAC1: ethernet@ef600f00 { + device_type = "network"; + compatible = "ibm,emac-460gt", "ibm,emac4sync"; + interrupt-parent = <&EMAC1>; + interrupts = <0x0 0x1>; + #interrupt-cells = <1>; + #address-cells = <0>; + #size-cells = <0>; + interrupt-map = </*Status*/ 0x0 &UIC2 0x11 0x4 + /*Wake*/ 0x1 &UIC2 0x15 0x4>; + reg = <0xef600f00 0x000000c4>; + local-mac-address = [000000000000]; /* Filled in by U-Boot */ + mal-device = <&MAL0>; + mal-tx-channel = <1>; + mal-rx-channel = <8>; + cell-index = <1>; + max-frame-size = <9000>; + rx-fifo-size = <4096>; + tx-fifo-size = <2048>; + rx-fifo-size-gige = <16384>; + phy-mode = "rgmii"; + phy-map = <0x00000000>; + rgmii-device = <&RGMII0>; + rgmii-channel = <1>; + tah-device = <&TAH1>; + tah-channel = <1>; + has-inverted-stacr-oc; + has-new-stacr-staopc; + mdio-device = <&EMAC0>; + }; + + EMAC2: ethernet@ef601100 { + device_type = "network"; + compatible = "ibm,emac-460gt", "ibm,emac4sync"; + interrupt-parent = <&EMAC2>; + interrupts = <0x0 0x1>; + #interrupt-cells = <1>; + #address-cells = <0>; + #size-cells = <0>; + interrupt-map = </*Status*/ 0x0 &UIC2 0x12 0x4 + /*Wake*/ 0x1 &UIC2 0x16 0x4>; + reg = <0xef601100 0x000000c4>; + local-mac-address = [000000000000]; /* Filled in by U-Boot */ + mal-device = <&MAL0>; + mal-tx-channel = <2>; + mal-rx-channel = <16>; + cell-index = <2>; + max-frame-size = <9000>; + rx-fifo-size = <4096>; + tx-fifo-size = <2048>; + rx-fifo-size-gige = <16384>; + tx-fifo-size-gige = <16384>; /* emac2&3 only */ + phy-mode = "rgmii"; + phy-map = <0x00000000>; + rgmii-device = <&RGMII1>; + rgmii-channel = <0>; + has-inverted-stacr-oc; + has-new-stacr-staopc; + mdio-device = <&EMAC0>; + }; + + EMAC3: ethernet@ef601200 { + device_type = "network"; + compatible = "ibm,emac-460gt", "ibm,emac4sync"; + interrupt-parent = <&EMAC3>; + interrupts = <0x0 0x1>; + #interrupt-cells = <1>; + #address-cells = <0>; + #size-cells = <0>; + interrupt-map = </*Status*/ 0x0 &UIC2 0x13 0x4 + /*Wake*/ 0x1 &UIC2 0x17 0x4>; + reg = <0xef601200 0x000000c4>; + local-mac-address = [000000000000]; /* Filled in by U-Boot */ + mal-device = <&MAL0>; + mal-tx-channel = <3>; + mal-rx-channel = <24>; + cell-index = <3>; + max-frame-size = <9000>; + rx-fifo-size = <4096>; + tx-fifo-size = <2048>; + rx-fifo-size-gige = <16384>; + tx-fifo-size-gige = <16384>; /* emac2&3 only */ + phy-mode = "rgmii"; + phy-map = <0x00000000>; + rgmii-device = <&RGMII1>; + rgmii-channel = <1>; + has-inverted-stacr-oc; + has-new-stacr-staopc; + mdio-device = <&EMAC0>; + }; + }; + + PCIX0: pci@c0ec00000 { + device_type = "pci"; + #interrupt-cells = <1>; + #size-cells = <2>; + #address-cells = <3>; + compatible = "ibm,plb-pcix-460gt", "ibm,plb-pcix"; + primary; + large-inbound-windows; + enable-msi-hole; + reg = <0x0000000c 0x0ec00000 0x00000008 /* Config space access */ + 0x00000000 0x00000000 0x00000000 /* no IACK cycles */ + 0x0000000c 0x0ed00000 0x00000004 /* Special cycles */ + 0x0000000c 0x0ec80000 0x00000100 /* Internal registers */ + 0x0000000c 0x0ec80100 0x000000fc>; /* Internal messaging registers */ + + /* Outbound ranges, one memory and one IO, + * later cannot be changed + */ + ranges = <0x02000000 0x00000000 0x80000000 0x0000000d 0x80000000 0x00000000 0x80000000 + 0x02000000 0x00000000 0x00000000 0x0000000c 0x0ee00000 0x00000000 0x00100000 + 0x01000000 0x00000000 0x00000000 0x0000000c 0x08000000 0x00000000 0x00010000>; + + /* Inbound 2GB range starting at 0 */ + dma-ranges = <0x42000000 0x0 0x0 0x0 0x0 0x0 0x80000000>; + + /* This drives busses 0 to 0x3f */ + bus-range = <0x0 0x3f>; + + /* All PCI interrupts are routed to ext IRQ 2 -> UIC1-0 */ + interrupt-map-mask = <0x0 0x0 0x0 0x0>; + interrupt-map = < 0x0 0x0 0x0 0x0 &UIC1 0x0 0x8 >; + }; + + PCIE0: pciex@d00000000 { + device_type = "pci"; + #interrupt-cells = <1>; + #size-cells = <2>; + #address-cells = <3>; + compatible = "ibm,plb-pciex-460ex", "ibm,plb-pciex"; + primary; + port = <0x0>; /* port number */ + reg = <0x0000000d 0x00000000 0x20000000 /* Config space access */ + 0x0000000c 0x08010000 0x00001000>; /* Registers */ + dcr-reg = <0x100 0x020>; + sdr-base = <0x300>; + + /* Outbound ranges, one memory and one IO, + * later cannot be changed + */ + ranges = <0x02000000 0x00000000 0x80000000 0x0000000e 0x00000000 0x00000000 0x80000000 + 0x02000000 0x00000000 0x00000000 0x0000000f 0x00000000 0x00000000 0x00100000 + 0x01000000 0x00000000 0x00000000 0x0000000f 0x80000000 0x00000000 0x00010000>; + + /* Inbound 2GB range starting at 0 */ + dma-ranges = <0x42000000 0x0 0x0 0x0 0x0 0x0 0x80000000>; + + /* This drives busses 40 to 0x7f */ + bus-range = <0x40 0x7f>; + + /* Legacy interrupts (note the weird polarity, the bridge seems + * to invert PCIe legacy interrupts). + * We are de-swizzling here because the numbers are actually for + * port of the root complex virtual P2P bridge. But I want + * to avoid putting a node for it in the tree, so the numbers + * below are basically de-swizzled numbers. + * The real slot is on idsel 0, so the swizzling is 1:1 + */ + interrupt-map-mask = <0x0 0x0 0x0 0x7>; + interrupt-map = < + 0x0 0x0 0x0 0x1 &UIC3 0xc 0x4 /* swizzled int A */ + 0x0 0x0 0x0 0x2 &UIC3 0xd 0x4 /* swizzled int B */ + 0x0 0x0 0x0 0x3 &UIC3 0xe 0x4 /* swizzled int C */ + 0x0 0x0 0x0 0x4 &UIC3 0xf 0x4 /* swizzled int D */>; + }; + + PCIE1: pciex@d20000000 { + device_type = "pci"; + #interrupt-cells = <1>; + #size-cells = <2>; + #address-cells = <3>; + compatible = "ibm,plb-pciex-460ex", "ibm,plb-pciex"; + primary; + port = <0x1>; /* port number */ + reg = <0x0000000d 0x20000000 0x20000000 /* Config space access */ + 0x0000000c 0x08011000 0x00001000>; /* Registers */ + dcr-reg = <0x120 0x020>; + sdr-base = <0x340>; + + /* Outbound ranges, one memory and one IO, + * later cannot be changed + */ + ranges = <0x02000000 0x00000000 0x80000000 0x0000000e 0x80000000 0x00000000 0x80000000 + 0x02000000 0x00000000 0x00000000 0x0000000f 0x00100000 0x00000000 0x00100000 + 0x01000000 0x00000000 0x00000000 0x0000000f 0x80010000 0x00000000 0x00010000>; + + /* Inbound 2GB range starting at 0 */ + dma-ranges = <0x42000000 0x0 0x0 0x0 0x0 0x0 0x80000000>; + + /* This drives busses 80 to 0xbf */ + bus-range = <0x80 0xbf>; + + /* Legacy interrupts (note the weird polarity, the bridge seems + * to invert PCIe legacy interrupts). + * We are de-swizzling here because the numbers are actually for + * port of the root complex virtual P2P bridge. But I want + * to avoid putting a node for it in the tree, so the numbers + * below are basically de-swizzled numbers. + * The real slot is on idsel 0, so the swizzling is 1:1 + */ + interrupt-map-mask = <0x0 0x0 0x0 0x7>; + interrupt-map = < + 0x0 0x0 0x0 0x1 &UIC3 0x10 0x4 /* swizzled int A */ + 0x0 0x0 0x0 0x2 &UIC3 0x11 0x4 /* swizzled int B */ + 0x0 0x0 0x0 0x3 &UIC3 0x12 0x4 /* swizzled int C */ + 0x0 0x0 0x0 0x4 &UIC3 0x13 0x4 /* swizzled int D */>; + }; + }; +};

This is required at present for device tree control. The ppc4xx does support GPIOs but does not seem to have a proper driver. So this file is empty.

Signed-off-by: Simon Glass sjg@chromium.org ---

arch/powerpc/include/asm/arch-ppc4xx/gpio.h | 7 +++++++ 1 file changed, 7 insertions(+) create mode 100644 arch/powerpc/include/asm/arch-ppc4xx/gpio.h

diff --git a/arch/powerpc/include/asm/arch-ppc4xx/gpio.h b/arch/powerpc/include/asm/arch-ppc4xx/gpio.h new file mode 100644 index 0000000..3d960c3 --- /dev/null +++ b/arch/powerpc/include/asm/arch-ppc4xx/gpio.h @@ -0,0 +1,7 @@ +/* + * (C) Copyright 2014 Google, Inc + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +/* This is empty for now as we don't support the generic GPIO interface */

Enable CONFIG_OF_CONTROL so that U-Boot on these three boards uses a device tree for its configuration.

Signed-off-by: Simon Glass sjg@chromium.org ---

board/amcc/canyonlands/u-boot-ram.lds | 10 ++++++++-- configs/arches_defconfig | 3 +++ configs/canyonlands_defconfig | 3 +++ configs/glacier_defconfig | 3 +++ configs/glacier_ramboot_defconfig | 3 +++ 5 files changed, 20 insertions(+), 2 deletions(-)

diff --git a/board/amcc/canyonlands/u-boot-ram.lds b/board/amcc/canyonlands/u-boot-ram.lds index 6765256..1750c74 100644 --- a/board/amcc/canyonlands/u-boot-ram.lds +++ b/board/amcc/canyonlands/u-boot-ram.lds @@ -12,6 +12,7 @@ SECTIONS . = + SIZEOF_HEADERS; .text : { + _image_copy_start = .; arch/powerpc/cpu/ppc4xx/start.o (.text*) board/amcc/canyonlands/init.o (.text*)

@@ -61,9 +62,14 @@ SECTIONS . = ALIGN(256); __init_begin = .; .text.init : { *(.text.init) } - .data.init : { *(.data.init) } - . = ALIGN(256); + .data.init : { + *(.data.init) + . = ALIGN(256); + LONG(0) LONG(0) /* Extend u-boot.bin to here */ + } __init_end = .; + _end = .; + _image_binary_end = .;

__bss_start = .; .bss (NOLOAD) : diff --git a/configs/arches_defconfig b/configs/arches_defconfig index 60e6ef9..30c6932 100644 --- a/configs/arches_defconfig +++ b/configs/arches_defconfig @@ -2,3 +2,6 @@ CONFIG_PPC=y CONFIG_4xx=y CONFIG_TARGET_CANYONLANDS=y CONFIG_ARCHES=y +CONFIG_DEFAULT_DEVICE_TREE="arches" +CONFIG_OF_CONTROL=y +CONFIG_OF_SEPARATE=y diff --git a/configs/canyonlands_defconfig b/configs/canyonlands_defconfig index 37a2b4d..6f6cf14 100644 --- a/configs/canyonlands_defconfig +++ b/configs/canyonlands_defconfig @@ -2,3 +2,6 @@ CONFIG_PPC=y CONFIG_4xx=y CONFIG_TARGET_CANYONLANDS=y CONFIG_CANYONLANDS=y +CONFIG_DEFAULT_DEVICE_TREE="canyonlands" +CONFIG_OF_CONTROL=y +CONFIG_OF_SEPARATE=y diff --git a/configs/glacier_defconfig b/configs/glacier_defconfig index 436b9f8..e67fa32 100644 --- a/configs/glacier_defconfig +++ b/configs/glacier_defconfig @@ -2,3 +2,6 @@ CONFIG_PPC=y CONFIG_4xx=y CONFIG_TARGET_CANYONLANDS=y CONFIG_GLACIER=y +CONFIG_DEFAULT_DEVICE_TREE="glacier" +CONFIG_OF_CONTROL=y +CONFIG_OF_SEPARATE=y diff --git a/configs/glacier_ramboot_defconfig b/configs/glacier_ramboot_defconfig index 4fc2303..e5b402e 100644 --- a/configs/glacier_ramboot_defconfig +++ b/configs/glacier_ramboot_defconfig @@ -3,3 +3,6 @@ CONFIG_PPC=y CONFIG_4xx=y CONFIG_TARGET_CANYONLANDS=y CONFIG_GLACIER=y +CONFIG_DEFAULT_DEVICE_TREE="glacier" +CONFIG_OF_CONTROL=y +CONFIG_OF_SEPARATE=y

This comes from the device tree or a call to get_uart_clock().

Signed-off-by: Simon Glass sjg@chromium.org ---

arch/powerpc/include/asm/ppc460ex_gt.h | 2 ++ include/configs/amcc-common.h | 2 ++ 2 files changed, 4 insertions(+)

diff --git a/arch/powerpc/include/asm/ppc460ex_gt.h b/arch/powerpc/include/asm/ppc460ex_gt.h index f41df0d..ea019aa 100644 --- a/arch/powerpc/include/asm/ppc460ex_gt.h +++ b/arch/powerpc/include/asm/ppc460ex_gt.h @@ -19,10 +19,12 @@ /* Memory mapped registers */ #define CONFIG_SYS_PERIPHERAL_BASE 0xef600000 /* Internal Peripherals */

+#ifndef CONFIG_DM_SERIAL #define CONFIG_SYS_NS16550_COM1 (CONFIG_SYS_PERIPHERAL_BASE + 0x0300) #define CONFIG_SYS_NS16550_COM2 (CONFIG_SYS_PERIPHERAL_BASE + 0x0400) #define CONFIG_SYS_NS16550_COM3 (CONFIG_SYS_PERIPHERAL_BASE + 0x0500) #define CONFIG_SYS_NS16550_COM4 (CONFIG_SYS_PERIPHERAL_BASE + 0x0600) +#endif

#define GPIO0_BASE (CONFIG_SYS_PERIPHERAL_BASE + 0x0b00) #define GPIO1_BASE (CONFIG_SYS_PERIPHERAL_BASE + 0x0c00) diff --git a/include/configs/amcc-common.h b/include/configs/amcc-common.h index 2aea899..73e1b0a 100644 --- a/include/configs/amcc-common.h +++ b/include/configs/amcc-common.h @@ -20,8 +20,10 @@ */ #define CONFIG_SYS_NS16550 #define CONFIG_SYS_NS16550_SERIAL +#ifndef CONFIG_DM_SERIAL #define CONFIG_SYS_NS16550_REG_SIZE 1 #define CONFIG_SYS_NS16550_CLK get_serial_clock() +#endif #define CONFIG_BAUDRATE 115200 #define CONFIG_SYS_BAUDRATE_TABLE \ {300, 600, 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200, 230400}

Adjust Kconfig to default to driver model for glacier, canyonlands and arches.

Signed-off-by: Simon Glass sjg@chromium.org ---

board/amcc/canyonlands/Kconfig | 9 +++++++++ 1 file changed, 9 insertions(+)

diff --git a/board/amcc/canyonlands/Kconfig b/board/amcc/canyonlands/Kconfig index 0fc6877..cbc5ff9 100644 --- a/board/amcc/canyonlands/Kconfig +++ b/board/amcc/canyonlands/Kconfig @@ -29,4 +29,13 @@ config ARCHES

endchoice

+config DM + default y + +config DM_SERIAL + default y + +config SYS_MALLOC_F_LEN + default 0x400 + endif

This came up in a discussion on the mailing list here:

https://patchwork.ozlabs.org/patch/384613/

My concerns at the time were: - it doesn't need to be written in assembler - it doesn't need to be ARM-specific

This patch provides a possible alternative. It works by allowing any serial driver to export one init function and provide a putc() function. These can be used to output debug data before the real serial driver is available.

This implementation does not depend on driver model, and it is possible for it to operate without a stack on some architectures (e.g. PowerPC, ARM). It provides the same features as the ARM-specific debug.S but with more UART and architecture support.

Signed-off-by: Simon Glass sjg@chromium.org ---

drivers/serial/Kconfig | 46 ++++++++++++++++ include/debug_uart.h | 139 +++++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 185 insertions(+) create mode 100644 include/debug_uart.h

diff --git a/drivers/serial/Kconfig b/drivers/serial/Kconfig index a0b6e02..268bb42 100644 --- a/drivers/serial/Kconfig +++ b/drivers/serial/Kconfig @@ -5,6 +5,52 @@ config DM_SERIAL If you want to use driver model for serial drivers, say Y. To use legacy serial drivers, say N.

+config DEBUG_UART + bool "Enable an early debug UART for debugging" + help + The debug UART is intended for use very early in U-Boot to debug + problems when an ICE or other debug mechanism is not available. + + To use it you should: + - Make sure your UART supports this interface + - Enable CONFIG_DEBUG_UART + - Enable the CONFIG for your UART to tell it to provide this interface + (e.g. CONFIG_DEBUG_UART_NS16550) + - Define the required settings as needed (see below) + - Call debug_uart_init() before use + - Call debug_uart_putc() to output a character + + Depending on your platform it may be possible to use this UART before + a stack is available. + + If your UART does not support this interface you can probably add + support quite easily. Remember that you cannot use driver model and + it is preferred to use no stack. + + You must not use this UART once driver model is working and the + serial drivers are up and running (done in serial_init()). Otherwise + the drivers may conflict and you will get strange output. + +config DEBUG_UART_BASE + hex "Base address of UART" + depends on DEBUG_UART + help + This is the base address of your UART for memory-mapped UARTs. + + A default should be provided by your board, but if not you will need + to use the correct value here. + +config DEBUG_UART_CLOCK + int "UART input clock" + depends on DEBUG_UART + help + The UART input clock determines the speed of the internal UART + circuitry. The baud rate is derived from this by dividing the input + clock down. + + A default should be provided by your board, but if not you will need + to use the correct value here. + config UNIPHIER_SERIAL bool "UniPhier on-chip UART support" depends on ARCH_UNIPHIER && DM_SERIAL diff --git a/include/debug_uart.h b/include/debug_uart.h new file mode 100644 index 0000000..20d8f34 --- /dev/null +++ b/include/debug_uart.h @@ -0,0 +1,139 @@ +/* + * Early debug UART support + * + * (C) Copyright 2014 Google, Inc + * Writte by Simon Glass sjg@chromium.org + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#ifndef _DEBUG_UART_H +#define _DEBUG_UART_H + +#include <linux/linkage.h> + +/* + * The debug UART is intended for use very early in U-Boot to debug problems + * when an ICE or other debug mechanism is not available. + * + * To use it you should: + * - Make sure your UART supports this interface + * - Enable CONFIG_DEBUG_UART + * - Enable the CONFIG for your UART to tell it to provide this interface + * (e.g. CONFIG_DEBUG_UART_NS16550) + * - Define the required settings as needed (see below) + * - Call debug_uart_init() before use + * - Call printch() to output a character + * + * Depending on your platform it may be possible to use this UART before a + * stack is available. + * + * If your UART does not support this interface you can probably add support + * quite easily. Remember that you cannot use driver model and it is preferred + * to use no stack. + * + * You must not use this UART once driver model is working and the serial + * drivers are up and running (done in serial_init()). Otherwise the drivers + * may conflict and you will get strange output. + * + * + * To enable the debug UART in your serial driver: + * + * - #include <debug_uart.h> + * - Define debug_uart_init(), trying to avoid using the stack + * - Define _debug_uart_putc() as static inline (avoiding stack usage) + * - Immediately afterwards, add DEBUG_UART_FUNCS to define the rest of the + * functionality (printch(), etc.) + */ + +/** + * debug_uart_init() - Set up the debug UART ready for use + * + * This sets up the UART with the correct baud rate, etc. + * + * Available CONFIG is: + * + * - CONFIG_DEBUG_UART_BASE: Base address of UART + * - CONFIG_BAUDRATE: Requested baud rate + * - CONFIG_DEBUG_UART_CLOCK: Input clock for UART + */ +void debug_uart_init(void); + +/** + * printch() - Output a character to the debug UART + * + * @ch: Character to output + */ +void printch(int ch); + +/** + * printascii() - Output an ASCII string to the debug UART + * + * @str: String to output + */ +void printascii(const char *str); + +/** + * printhex2() - Output a 2-digit hex value + * + * @value: Value to output + */ +void printhex2(uint value); + +/** + * printhex4() - Output a 4-digit hex value + * + * @value: Value to output + */ +void printhex4(uint value); + +/** + * printhex8() - Output a 8-digit hex value + * + * @value: Value to output + */ +void printhex8(uint value); + +/* + * Now define some functions - this should be inserted into the serial driver + */ +#define DEBUG_UART_FUNCS \ + asmlinkage void printch(int ch) \ + { \ + _debug_uart_putc(ch); \ + } \ +\ + asmlinkage void printascii(const char *str) \ + { \ + while (*str) \ + _debug_uart_putc(*str++); \ + } \ +\ + static inline void printhex1(uint digit) \ + { \ + digit &= 0xf; \ + _debug_uart_putc(digit > 9 ? digit - 10 + 'a' : digit + '0'); \ + } \ +\ + static inline void printhex(uint value, int digits) \ + { \ + while (digits-- > 0) \ + printhex1(value >> (4 * digits)); \ + } \ +\ + asmlinkage void printhex2(uint value) \ + { \ + printhex(value, 2); \ + } \ +\ + asmlinkage void printhex4(uint value) \ + { \ + printhex(value, 4); \ + } \ +\ + asmlinkage void printhex8(uint value) \ + { \ + printhex(value, 8); \ + } + +#endif

Provide defaults so that the early debug UART can be enabled.

Signed-off-by: Simon Glass sjg@chromium.org ---

board/amcc/canyonlands/Kconfig | 6 ++++++ 1 file changed, 6 insertions(+)

diff --git a/board/amcc/canyonlands/Kconfig b/board/amcc/canyonlands/Kconfig index cbc5ff9..bfdf17a 100644 --- a/board/amcc/canyonlands/Kconfig +++ b/board/amcc/canyonlands/Kconfig @@ -38,4 +38,10 @@ config DM_SERIAL config SYS_MALLOC_F_LEN default 0x400

+config DEBUG_UART_BASE + default 0xef600300 + +config DEBUG_UART_CLOCK + default 7372800 + endif