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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 424 | giacomo | 1 | /* Hook for machine specific memory setup. |
| 2 | * |
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| 3 | * This is included late in kernel/setup.c so that it can make use of all of |
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| 4 | * the static functions. */ |
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| 5 | |||
| 6 | #define MB (1024 * 1024) |
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| 7 | |||
| 8 | unsigned long sgivwfb_mem_phys; |
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| 9 | unsigned long sgivwfb_mem_size; |
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| 10 | |||
| 11 | long long mem_size __initdata = 0; |
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| 12 | |||
| 13 | static inline char * __init machine_specific_memory_setup(void) |
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| 14 | { |
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| 15 | long long gfx_mem_size = 8 * MB; |
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| 16 | |||
| 17 | mem_size = ALT_MEM_K; |
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| 18 | |||
| 19 | if (!mem_size) { |
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| 20 | printk(KERN_WARNING "Bootloader didn't set memory size, upgrade it !\n"); |
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| 21 | mem_size = 128 * MB; |
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| 22 | } |
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| 23 | |||
| 24 | /* |
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| 25 | * this hardcodes the graphics memory to 8 MB |
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| 26 | * it really should be sized dynamically (or at least |
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| 27 | * set as a boot param) |
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| 28 | */ |
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| 29 | if (!sgivwfb_mem_size) { |
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| 30 | printk(KERN_WARNING "Defaulting to 8 MB framebuffer size\n"); |
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| 31 | sgivwfb_mem_size = 8 * MB; |
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| 32 | } |
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| 33 | |||
| 34 | /* |
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| 35 | * Trim to nearest MB |
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| 36 | */ |
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| 37 | sgivwfb_mem_size &= ~((1 << 20) - 1); |
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| 38 | sgivwfb_mem_phys = mem_size - gfx_mem_size; |
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| 39 | |||
| 40 | add_memory_region(0, LOWMEMSIZE(), E820_RAM); |
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| 41 | add_memory_region(HIGH_MEMORY, mem_size - sgivwfb_mem_size - HIGH_MEMORY, E820_RAM); |
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| 42 | add_memory_region(sgivwfb_mem_phys, sgivwfb_mem_size, E820_RESERVED); |
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| 43 | |||
| 44 | return "PROM"; |
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| 45 | |||
| 46 | /* Remove gcc warnings */ |
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| 47 | (void) sanitize_e820_map(NULL, NULL); |
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| 48 | (void) copy_e820_map(NULL, 0); |
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| 49 | } |