/packages/tools/u-boot/patches/u-boot-2011.03-rc1-0004-armv7-start.S-provide-a-hook-for-saving-boot-params.patch

http://github.com/OpenELEC/OpenELEC.tv · Patch · 51 lines · 43 code · 8 blank · 0 comment · 0 complexity · cc66e9d3fec9a59bcad4b0dbe2047f44 MD5 · raw file 

    

  1. From 19eb02e3bb2e569b7269019eb0e116220daac23f Mon Sep 17 00:00:00 2001
    2. 

  2. From: Aneesh V <aneesh@ti.com>
    3. 

  3. Date: Thu, 17 Feb 2011 16:49:05 +0530
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  4. Subject: [PATCH 04/22] armv7: start.S: provide a hook for saving boot params
    5. 

  5. 

  6. Provide a means by which u-boot/SPL can save parameters passed
    7. 

  7. to it by ROM code or the pre-loader.
    8. 

  8. 

  9. A new function 'save_boot_params' has been defined and a default
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  10. implentation provided. Please note that we do not have a stack yet.
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  11. So, any implementation of this function should not use stack.
    12. 

  12. 

  13. Signed-off-by: Aneesh V <aneesh@ti.com>
    14. 

  14. ---
    15. 

  15.  arch/arm/cpu/armv7/cpu.c   |    7 +++++++
    16. 

  16.  arch/arm/cpu/armv7/start.S |    1 +
    17. 

  17.  2 files changed, 8 insertions(+), 0 deletions(-)
    18. 

  18. 

  19. diff --git a/arch/arm/cpu/armv7/cpu.c b/arch/arm/cpu/armv7/cpu.c
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  20. index a01e0d6..54533fc 100644
    21. 

  21. --- a/arch/arm/cpu/armv7/cpu.c
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  22. +++ b/arch/arm/cpu/armv7/cpu.c
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  23. @@ -41,6 +41,13 @@
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  24.  
    25. 

  25.  static void cache_flush(void);
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  26.  
    27. 

  27. +void save_boot_params_default(u32 r0, u32 r1, u32 r2, u32 r3)
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  28. +{
    29. 

  29. +}
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  30. +
    31. 

  31. +void save_boot_params(u32 r0, u32 r1, u32 r2, u32 r3)
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  32. +	__attribute__((weak, alias("save_boot_params_default")));
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  33. +
    34. 

  34.  int cleanup_before_linux(void)
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  35.  {
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  36.  	unsigned int i;
    37. 

  37. diff --git a/arch/arm/cpu/armv7/start.S b/arch/arm/cpu/armv7/start.S
    38. 

  38. index cb4f92f..3618190 100644
    39. 

  39. --- a/arch/arm/cpu/armv7/start.S
    40. 

  40. +++ b/arch/arm/cpu/armv7/start.S
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  41. @@ -103,6 +103,7 @@ IRQ_STACK_START_IN:
    42. 

  42.   */
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  43.  
    44. 

  44.  reset:
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  45. +	bl	save_boot_params
    46. 

  46.  	/*
    47. 

  47.  	 * set the cpu to SVC32 mode
    48. 

  48.  	 */
    49. 

  49. -- 
    50. 

  50. 1.7.2.3
    51.