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imx233:fuze+: major memory and usb rework

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- now identity map dram uncached and have a cached and buffered virtual alias
- rework dma to handle virtual to physical pointers conversion
- fix lcd frame pointer
- implement usb detection properly
- implement bootloader usb properly
- allow the bootloader to disable MMC windowing (useful for recovery)

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@30432 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Amaury Pouly 2011-09-05 11:29:32 +00:00
parent 11e1f71612
commit 7d4fed53cc
17 changed files with 353 additions and 104 deletions
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30
firmware/export/imx233.h
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@ -21,17 +21,41 @@
#ifndef __IMX233_H__
#define __IMX233_H__
/*
* Chip Memory Map:
* 0x00000000 - 0x00007fff: on chip ram
* 0x40000000 - 0x5fffffff: dram (512Mb max)
* 0x80000000 - 0x80100000: memory mapped registers
* We use the following map:
* 0x60000000 - 0x7fffffff: dram (cached)
* 0x90000000 - 0xafffffff: dram (buffered)
* everything else : identity mapped (uncached)
*
* As a side note it's important to notice that uncached dram is identity mapped
*/
#define IRAM_ORIG 0
#define IRAM_SIZE 0x8000
#define DRAM_ORIG 0x40000000
#define DRAM_SIZE (MEMORYSIZE * 0x100000)
#define UNCACHED_DRAM_ADDR 0x40000000
#define CACHED_DRAM_ADDR 0x60000000
#define BUFFERED_DRAM_ADDR 0x90000000
#define CACHEALIGN_SIZE 32
#define PHYSICAL_ADDR(a) \
((typeof(a))((uintptr_t)(a) >= CACHED_DRAM_ADDR ? \
((uintptr_t)(a) - CACHED_DRAM_ADDR + UNCACHED_DRAM_ADDR) \
:(uintptr_t)(a)))
#define UNCACHED_ADDR(a) PHYSICAL_ADDR(a)
#define TTB_BASE_ADDR (DRAM_ORIG + DRAM_SIZE - TTB_SIZE)
#define TTB_SIZE 0x4000
#define TTB_BASE ((unsigned long *)TTB_BASE_ADDR)
#define FRAME_SIZE (LCD_WIDTH * LCD_HEIGHT * LCD_DEPTH / 8)
#define LCD_FRAME_ADDR (DRAM_ORIG + DRAM_SIZE - TTB_SIZE - FRAME_SIZE)
#define FRAME ((unsigned short *)LCD_FRAME_ADDR)
#define FRAME_PHYS_ADDR (DRAM_ORIG + DRAM_SIZE - TTB_SIZE - FRAME_SIZE)
#define FRAME ((void *)(FRAME_PHYS_ADDR - UNCACHED_DRAM_ADDR + BUFFERED_DRAM_ADDR))
/* USBOTG */
#define USB_QHARRAY_ATTR __attribute__((section(".qharray"),nocommon,aligned(2048)))
@ -52,5 +76,7 @@
#define CACHEALIGN_BITS 4
#define __XTRACT(reg, field) ((reg & reg##__##field##_BM) >> reg##__##field##_BP)
#define __XTRACT_EX(val, field) (((val) & field##_BM) >> field##_BP)
#endif /* __IMX233_H__ */