diff options
Diffstat (limited to 'arch/cris/arch-v10/kernel/head.S')
| -rw-r--r-- | arch/cris/arch-v10/kernel/head.S | 126 |
1 files changed, 55 insertions, 71 deletions
diff --git a/arch/cris/arch-v10/kernel/head.S b/arch/cris/arch-v10/kernel/head.S index 2c1dd1184a8f..f00c145b43f1 100644 --- a/arch/cris/arch-v10/kernel/head.S +++ b/arch/cris/arch-v10/kernel/head.S @@ -1,4 +1,4 @@ -/* $Id: head.S,v 1.7 2004/05/14 07:58:01 starvik Exp $ +/* $Id: head.S,v 1.10 2005/06/20 05:12:54 starvik Exp $ * * Head of the kernel - alter with care * @@ -7,6 +7,16 @@ * Authors: Bjorn Wesen (bjornw@axis.com) * * $Log: head.S,v $ + * Revision 1.10 2005/06/20 05:12:54 starvik + * Remove unnecessary diff to kernel.org tree + * + * Revision 1.9 2004/12/13 12:21:51 starvik + * Added I/O and DMA allocators from Linux 2.4 + * + * Revision 1.8 2004/11/22 11:41:14 starvik + * Kernel command line may be supplied to kernel. Not used by Axis but may + * be used by customers. + * * Revision 1.7 2004/05/14 07:58:01 starvik * Merge of changes from 2.4 * @@ -181,6 +191,7 @@ #define CRAMFS_MAGIC 0x28cd3d45 #define RAM_INIT_MAGIC 0x56902387 +#define COMMAND_LINE_MAGIC 0x87109563 #define START_ETHERNET_CLOCK IO_STATE(R_NETWORK_GEN_CONFIG, enable, on) |\ IO_STATE(R_NETWORK_GEN_CONFIG, phy, mii_clk) @@ -490,6 +501,23 @@ _no_romfs_in_flash: _start_it: + ;; Check if kernel command line is supplied + cmp.d COMMAND_LINE_MAGIC, $r10 + bne no_command_line + nop + + move.d 256, $r13 + move.d cris_command_line, $r10 + or.d 0x80000000, $r11 ; Make it virtual +1: + move.b [$r11+], $r12 + move.b $r12, [$r10+] + subq 1, $r13 + bne 1b + nop + +no_command_line: + ;; the kernel stack is overlayed with the task structure for each ;; task. thus the initial kernel stack is in the same page as the ;; init_task (but starts in the top of the page, size 8192) @@ -567,76 +595,32 @@ _start_it: ;; Etrax product HW genconfig setup moveq 0,$r0 -#if (!defined(CONFIG_ETRAX_KGDB) || !defined(CONFIG_ETRAX_DEBUG_PORT0)) \ - && !defined(CONFIG_DMA_MEMCPY) - ; DMA channels 6 and 7 to ser0, kgdb doesnt want DMA - or.d IO_STATE (R_GEN_CONFIG, dma7, serial0) \ - | IO_STATE (R_GEN_CONFIG, dma6, serial0),$r0 -#endif -#if !defined(CONFIG_ETRAX_KGDB) || !defined(CONFIG_ETRAX_DEBUG_PORT1) - ; DMA channels 8 and 9 to ser1, kgdb doesnt want DMA - or.d IO_STATE (R_GEN_CONFIG, dma9, serial1) \ - | IO_STATE (R_GEN_CONFIG, dma8, serial1),$r0 -#endif -#ifdef CONFIG_DMA_MEMCPY - ; 6/7 memory-memory DMA - or.d IO_STATE (R_GEN_CONFIG, dma7, intdma6) \ - | IO_STATE (R_GEN_CONFIG, dma6, intdma7),$r0 -#endif -#ifdef CONFIG_ETRAX_SERIAL_PORT2 - ; Enable serial port 2 - or.w IO_STATE (R_GEN_CONFIG, ser2, select),$r0 -#if !defined(CONFIG_ETRAX_KGDB) || !defined(CONFIG_ETRAX_DEBUG_PORT2) - ; DMA channels 2 and 3 to ser2, kgdb doesnt want DMA - or.d IO_STATE (R_GEN_CONFIG, dma3, serial2) \ - | IO_STATE (R_GEN_CONFIG, dma2, serial2),$r0 -#endif -#endif -#if defined(CONFIG_ETRAX_SERIAL_PORT3) || defined(CONFIG_ETRAX_SYNCHRONOUS_SERIAL_PORT1) - ; Enable serial port 3 - or.w IO_STATE (R_GEN_CONFIG, ser3, select),$r0 -#if !defined(CONFIG_ETRAX_KGDB) || !defined(CONFIG_ETRAX_DEBUG_PORT3) - ; DMA channels 4 and 5 to ser3, kgdb doesnt want DMA - or.d IO_STATE (R_GEN_CONFIG, dma5, serial3) \ - | IO_STATE (R_GEN_CONFIG, dma4, serial3),$r0 -#endif -#endif -#if defined(CONFIG_ETRAX_PARALLEL_PORT0) || defined(CONFIG_ETRAX_ETHERNET_LPSLAVE) - ; parport 0 enabled using DMA 2/3 - or.w IO_STATE (R_GEN_CONFIG, par0, select),$r0 -#endif -#if defined(CONFIG_ETRAX_PARALLEL_PORT1) || defined(CONFIG_ETRAX_ETHERNET_LPSLAVE) - ; parport 1 enabled using DMA 4/5 - or.w IO_STATE (R_GEN_CONFIG, par1, select),$r0 -#endif -#ifdef CONFIG_ETRAX_IDE - ; DMA channels 2 and 3 to ATA, ATA enabled - or.d IO_STATE (R_GEN_CONFIG, dma3, ata) \ - | IO_STATE (R_GEN_CONFIG, dma2, ata) \ - | IO_STATE (R_GEN_CONFIG, ata, select),$r0 -#endif - -#ifdef CONFIG_ETRAX_USB_HOST_PORT1 - ; Set the USB port 1 enable bit - or.d IO_STATE (R_GEN_CONFIG, usb1, select),$r0 -#endif -#ifdef CONFIG_ETRAX_USB_HOST_PORT2 - ; Set the USB port 2 enable bit - or.d IO_STATE (R_GEN_CONFIG, usb2, select),$r0 -#endif -#ifdef CONFIG_ETRAX_USB_HOST - ; Connect DMA channels 8 and 9 to USB - and.d (~(IO_MASK (R_GEN_CONFIG, dma9) \ - | IO_MASK (R_GEN_CONFIG, dma8))) \ - | IO_STATE (R_GEN_CONFIG, dma9, usb) \ - | IO_STATE (R_GEN_CONFIG, dma8, usb),$r0 -#endif - -#ifdef CONFIG_JULIETTE - ; DMA channels 4 and 5 to EXTDMA0, for Juliette - or.d IO_STATE (R_GEN_CONFIG, dma5, extdma0) \ - | IO_STATE (R_GEN_CONFIG, dma4, extdma0),$r0 -#endif + + ;; Init interfaces (disable them). + or.d IO_STATE (R_GEN_CONFIG, scsi0, disable) \ + | IO_STATE (R_GEN_CONFIG, ata, disable) \ + | IO_STATE (R_GEN_CONFIG, par0, disable) \ + | IO_STATE (R_GEN_CONFIG, ser2, disable) \ + | IO_STATE (R_GEN_CONFIG, mio, disable) \ + | IO_STATE (R_GEN_CONFIG, scsi1, disable) \ + | IO_STATE (R_GEN_CONFIG, scsi0w, disable) \ + | IO_STATE (R_GEN_CONFIG, par1, disable) \ + | IO_STATE (R_GEN_CONFIG, ser3, disable) \ + | IO_STATE (R_GEN_CONFIG, mio_w, disable) \ + | IO_STATE (R_GEN_CONFIG, usb1, disable) \ + | IO_STATE (R_GEN_CONFIG, usb2, disable) \ + | IO_STATE (R_GEN_CONFIG, par_w, disable),$r0 + + ;; Init DMA channel muxing (set to unused clients). + or.d IO_STATE (R_GEN_CONFIG, dma2, ata) \ + | IO_STATE (R_GEN_CONFIG, dma3, ata) \ + | IO_STATE (R_GEN_CONFIG, dma4, scsi1) \ + | IO_STATE (R_GEN_CONFIG, dma5, scsi1) \ + | IO_STATE (R_GEN_CONFIG, dma6, unused) \ + | IO_STATE (R_GEN_CONFIG, dma7, unused) \ + | IO_STATE (R_GEN_CONFIG, dma8, usb) \ + | IO_STATE (R_GEN_CONFIG, dma9, usb),$r0 + #if defined(CONFIG_ETRAX_DEF_R_PORT_G0_DIR_OUT) or.d IO_STATE (R_GEN_CONFIG, g0dir, out),$r0 |