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annotate uprogs/memlayout.h @ 0:c450faca55f4

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author Tatsuki IHA <innparusu@cr.ie.u-ryukyu.ac.jp>
date Sun, 22 Oct 2017 18:25:39 +0900
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Tatsuki IHA <innparusu@cr.ie.u-ryukyu.ac.jp>
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1 // Memory layout
Tatsuki IHA <innparusu@cr.ie.u-ryukyu.ac.jp>
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Tatsuki IHA <innparusu@cr.ie.u-ryukyu.ac.jp>
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3 #define EXTMEM 0x8000 /* start of kernel code */
Tatsuki IHA <innparusu@cr.ie.u-ryukyu.ac.jp>
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4 #define PHYSTOP 0x8000000 /* assuming 128M RAM; need a fix to find the true RAM size */
Tatsuki IHA <innparusu@cr.ie.u-ryukyu.ac.jp>
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5 #define DEVSPACE 0xFE000000 /* i/o registers */
Tatsuki IHA <innparusu@cr.ie.u-ryukyu.ac.jp>
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Tatsuki IHA <innparusu@cr.ie.u-ryukyu.ac.jp>
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7 // Key addresses for address space layout (see kmap in vm.c for layout)
Tatsuki IHA <innparusu@cr.ie.u-ryukyu.ac.jp>
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8 #define KERNBASE 0x80000000 // First kernel virtual address
Tatsuki IHA <innparusu@cr.ie.u-ryukyu.ac.jp>
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9 #define KERNLINK (KERNBASE+EXTMEM) // Address where kernel is linked
Tatsuki IHA <innparusu@cr.ie.u-ryukyu.ac.jp>
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10 #define USERBOUND 0x40000000 // maximum user space due to one page pgd
Tatsuki IHA <innparusu@cr.ie.u-ryukyu.ac.jp>
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Tatsuki IHA <innparusu@cr.ie.u-ryukyu.ac.jp>
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12 #define MACHADDR (KERNBASE+0x2000)
Tatsuki IHA <innparusu@cr.ie.u-ryukyu.ac.jp>
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13 #define PA_START 0x0
Tatsuki IHA <innparusu@cr.ie.u-ryukyu.ac.jp>
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14 #define PHYSIO 0x20000000
Tatsuki IHA <innparusu@cr.ie.u-ryukyu.ac.jp>
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15 #define RAMSIZE (128*MByte)
Tatsuki IHA <innparusu@cr.ie.u-ryukyu.ac.jp>
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16 #define IOSIZE (16*MByte)
Tatsuki IHA <innparusu@cr.ie.u-ryukyu.ac.jp>
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17 #define TVSIZE 0x1000
Tatsuki IHA <innparusu@cr.ie.u-ryukyu.ac.jp>
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Tatsuki IHA <innparusu@cr.ie.u-ryukyu.ac.jp>
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19 static inline uint v2p(void *a) { return ((uint) (a)) - KERNBASE; }
Tatsuki IHA <innparusu@cr.ie.u-ryukyu.ac.jp>
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20 static inline void *p2v(uint a) { return (void *) ((a) + KERNBASE); }
Tatsuki IHA <innparusu@cr.ie.u-ryukyu.ac.jp>
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Tatsuki IHA <innparusu@cr.ie.u-ryukyu.ac.jp>
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22 #define V2P(a) (((uint) (a)) - KERNBASE)
Tatsuki IHA <innparusu@cr.ie.u-ryukyu.ac.jp>
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23 #define P2V(a) (((void *) (a)) + KERNBASE)
Tatsuki IHA <innparusu@cr.ie.u-ryukyu.ac.jp>
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Tatsuki IHA <innparusu@cr.ie.u-ryukyu.ac.jp>
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25 #define V2P_WO(x) ((x) - KERNBASE) // same as V2P, but without casts
Tatsuki IHA <innparusu@cr.ie.u-ryukyu.ac.jp>
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26 #define P2V_WO(x) ((x) + KERNBASE) // same as V2P, but without casts
Tatsuki IHA <innparusu@cr.ie.u-ryukyu.ac.jp>
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