Changeset 22f0561 in mainline for kernel/arch/ia64/src/start.S


Ignore:
Timestamp:
2011-12-31T00:12:58Z (14 years ago)
Author:
Jakub Jermar <jakub@…>
Branches:
lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export
Children:
2107e79, c520034
Parents:
efb48eb
Message:

Get rid of kernel static non-identity mappings on ia64.

  • IO_OFFSET is replaced by legacyio_virt_base and LEGACYIO_USER_BASE.
  • VIO_OFFSET and FW_OFFSET are removed entirely.
  • Legacy I/O and IO SAPIC are mapped via hw_map().
  • Remove corresponding locked translation records.
  • Cleanup ia64 kernel pio_read/write_8|16|32().
File:
1 edited

Legend:

Unmodified
Added
Removed

  • kernel/arch/ia64/src/start.S

    refb48eb r22f0561  
    3838#define KERNEL_TRANSLATION_I    0x0010000000000661
    3939#define KERNEL_TRANSLATION_D    0x0010000000000661
    40 #define KERNEL_TRANSLATION_VIO  0x0010000000000671      // FIXME: [non-ident]
    41 #define KERNEL_TRANSLATION_IO   0x00100FFFFC000671      // FIXME: [non-ident]
    42 #define KERNEL_TRANSLATION_FW   0x00100000F0000671      // FIXME: [non-ident]
    4340
    4441.section K_TEXT_START, "ax"
    … …  
    8885        itr.d dtr[r0] = r10
    8986       
    90         movl r7 = 1
    91         movl r8 = (VRN_KERNEL << VRN_SHIFT) | VIO_OFFSET
    92         mov cr.ifa = r8
    93         movl r10 = (KERNEL_TRANSLATION_VIO)
    94         itr.d dtr[r7] = r10
    95        
    96         mov r11 = cr.itir
    97         movl r10 = ~0xfc
    98         and r10 = r10, r11
    99         movl r11 = (IO_PAGE_WIDTH << PS_SHIFT)
    100         or r10 = r10, r11
    101         mov cr.itir = r10
    102        
    103         movl r7 = 2
    104         movl r8 = (VRN_KERNEL << VRN_SHIFT) | IO_OFFSET
    105         mov cr.ifa = r8
    106         movl r10 = (KERNEL_TRANSLATION_IO)
    107         itr.d dtr[r7] = r10
    108        
    109         # Setup mapping for firmware area (also SAPIC)
    110        
    111         mov r11 = cr.itir
    112         movl r10 = ~0xfc
    113         and r10 = r10, r11
    114         movl r11 = (FW_PAGE_WIDTH << PS_SHIFT)
    115         or r10 = r10, r11
    116         mov cr.itir = r10
    117        
    118         movl r7 = 3
    119         movl r8 = (VRN_KERNEL << VRN_SHIFT) | FW_OFFSET
    120         mov cr.ifa = r8
    121         movl r10 = (KERNEL_TRANSLATION_FW)
    122         itr.d dtr[r7] = r10
    123        
    124         # Initialize DSR
     87        # Initialize DCR
    12588       
    12689        movl r10 = (DCR_DP_MASK | DCR_DK_MASK | DCR_DX_MASK | DCR_DR_MASK | DCR_DA_MASK | DCR_DD_MASK | DCR_LC_MASK)
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