fded332bf4
With the kernel loaded to FastRAM (TT-RAM), none of the ST-RAM address range is mapped by init_mem, and ST-RAM is not accessible through the normal allocation pathways as a result. Implement ST-RAM pool allocation to be based on physical addresses always (it already was when the kernel was loaded in ST-RAM). Return kernel virtual addresses as per normal. The current test for the kernel residing in ST-RAM always returns true. Use the bootinfo memory chunk order instead - with the kernel in FastRAM, ST-RAM (phys. 0x0) is not the first chunk. In case the kernel is running from FastRAM, delay mapping of ST-RAM pool until after mem_init. Provide helper functions for those users of ST-RAM that need to be aware of the backing physical addresses. Kudos to Geert for his hints on getting this started. Signed-off-by: Michael Schmitz <schmitz@debian.org> Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
18 lines
489 B
C
18 lines
489 B
C
#ifndef _M68K_ATARI_STRAM_H
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#define _M68K_ATARI_STRAM_H
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/*
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* Functions for Atari ST-RAM management
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*/
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/* public interface */
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void *atari_stram_alloc(unsigned long size, const char *owner);
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void atari_stram_free(void *);
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void *atari_stram_to_virt(unsigned long phys);
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unsigned long atari_stram_to_phys(void *);
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/* functions called internally by other parts of the kernel */
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void atari_stram_init(void);
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void atari_stram_reserve_pages(void *start_mem);
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#endif /*_M68K_ATARI_STRAM_H */
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