1. 12 Oct, 2020 2 commits
    • Jimmy Brisson's avatar
      Increase type widths to satisfy width requirements · d7b5f408
      Jimmy Brisson authored
      
      
      Usually, C has no problem up-converting types to larger bit sizes. MISRA
      rule 10.7 requires that you not do this, or be very explicit about this.
      This resolves the following required rule:
      
          bl1/aarch64/bl1_context_mgmt.c:81:[MISRA C-2012 Rule 10.7 (required)]<None>
          The width of the composite expression "0U | ((mode & 3U) << 2U) | 1U |
          0x3c0U" (32 bits) is less that the right hand operand
          "18446744073709547519ULL" (64 bits).
      
      This also resolves MISRA defects such as:
      
          bl2/aarch64/bl2arch_setup.c:18:[MISRA C-2012 Rule 12.2 (required)]
          In the expression "3U << 20", shifting more than 7 bits, the number
          of bits in the essential type of the left expression, "3U", is
          not allowed.
      
      Further, MISRA requires that all shifts don't overflow. The definition of
      PAGE_SIZE was (1U << 12), and 1U is 8 bits. This caused about 50 issues.
      This fixes the violation by changing the definition to 1UL << 12. Since
      this uses 32bits, it should not create any issues for aarch32.
      
      This patch also contains a fix for a build failure in the sun50i_a64
      platform. Specifically, these misra fixes removed a single and
      instruction,
      
          92407e73        and     x19, x19, #0xffffffff
      
      from the cm_setup_context function caused a relocation in
      psci_cpus_on_start to require a linker-generated stub. This increased the
      size of the .text section and caused an alignment later on to go over a
      page boundary and round up to the end of RAM before placing the .data
      section. This sectionn is of non-zero size and therefore causes a link
      error.
      
      The fix included in this reorders the functions during link time
      without changing their ording with respect to alignment.
      
      Change-Id: I76b4b662c3d262296728a8b9aab7a33b02087f16
      Signed-off-by: default avatarJimmy Brisson <jimmy.brisson@arm.com>
      d7b5f408
    • Manish Pandey's avatar
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