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ppc4xx: Update lwmon5 board support

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This patch includes the following changes for the lwmon5 board support:

- Enable cache in SDRAM
- Use common EHCI driver instead of the PPC4xx specific OHCI driver
  This can be done since only high-speed devices are connected.
- Remove cached TLB entry again after ECC setup
- Use correct define for cache enabling
  (CONFIG_4xx_DCACHE instead of CONFIG_SYS_ENABLE_SDRAM_CACHE)
- Enable FIT image support

Signed-off-by: Stefan Roese <sr@denx.de>
This commit is contained in:
Stefan Roese 2010-11-26 15:45:48 +01:00
parent f7b548adb5
commit a321148b5b
2 changed files with 32 additions and 12 deletions
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22
board/lwmon5/sdram.c
View file

@ -45,10 +45,10 @@
* memory.
*
* If at some time this restriction doesn't apply anymore, just define
* CONFIG_SYS_ENABLE_SDRAM_CACHE in the board config file and this code should setup
* CONFIG_4xx_DCACHE in the board config file and this code should setup
* everything correctly.
*/
#ifdef CONFIG_SYS_ENABLE_SDRAM_CACHE
#ifdef CONFIG_4xx_DCACHE
#define MY_TLB_WORD2_I_ENABLE 0 /* enable caching on SDRAM */
#else
#define MY_TLB_WORD2_I_ENABLE TLB_WORD2_I_ENABLE /* disable caching on SDRAM */
@ -220,18 +220,32 @@ phys_size_t initdram (int board_type)
program_tlb(0, CONFIG_SYS_SDRAM_BASE, CONFIG_SYS_MBYTES_SDRAM << 20,
MY_TLB_WORD2_I_ENABLE);
#if defined(CONFIG_DDR_ECC)
#if defined(CONFIG_4xx_DCACHE)
/*
* If ECC is enabled, initialize the parity bits.
*/
program_ecc(0, CONFIG_SYS_MBYTES_SDRAM << 20, 0);
#else /* CONFIG_4xx_DCACHE */
/*
* Setup 2nd TLB with same physical address but different virtual address
* with cache enabled. This is done for fast ECC generation.
*/
program_tlb(0, CONFIG_SYS_DDR_CACHED_ADDR, CONFIG_SYS_MBYTES_SDRAM << 20, 0);
#ifdef CONFIG_DDR_ECC
/*
* If ECC is enabled, initialize the parity bits.
*/
program_ecc(CONFIG_SYS_DDR_CACHED_ADDR, CONFIG_SYS_MBYTES_SDRAM << 20, 0);
#endif
/*
* Now after initialization (auto-calibration and ECC generation)
* remove the TLB entries with caches enabled and program again with
* desired cache functionality
*/
remove_tlb(CONFIG_SYS_DDR_CACHED_ADDR, CONFIG_SYS_MBYTES_SDRAM << 20);
#endif /* CONFIG_4xx_DCACHE */
#endif /* CONFIG_DDR_ECC */
/*
* Clear possible errors resulting from data-eye-search.

22
include/configs/lwmon5.h
View file

@ -43,6 +43,8 @@
#define CONFIG_SYS_CLK_FREQ 33300000 /* external freq to pll */
#define CONFIG_4xx_DCACHE /* enable cache in SDRAM */
#define CONFIG_BOARD_EARLY_INIT_F /* Call board_early_init_f */
#define CONFIG_BOARD_EARLY_INIT_R /* Call board_early_init_r */
#define CONFIG_BOARD_POSTCLK_INIT /* Call board_postclk_init */
@ -321,6 +323,8 @@
/* Update size in "reg" property of NOR FLASH device tree nodes */
#define CONFIG_FDT_FIXUP_NOR_FLASH_SIZE
#define CONFIG_FIT /* enable FIT image support */
#define CONFIG_POST_KEY_MAGIC "3C+3E" /* press F3 + F5 keys to force POST */
#define CONFIG_PREBOOT "setenv bootdelay 15"
@ -393,16 +397,18 @@
#define CONFIG_VIDEO_SW_CURSOR
#define CONFIG_SPLASH_SCREEN
/* USB */
#ifdef CONFIG_440EPX
#define CONFIG_USB_OHCI
/*
* USB/EHCI
*/
#define CONFIG_USB_EHCI /* Enable EHCI USB support */
#define CONFIG_USB_EHCI_PPC4XX /* on PPC4xx platform */
#define CONFIG_SYS_PPC4XX_USB_ADDR 0xe0000300
#define CONFIG_EHCI_DCACHE /* with dcache handling support */
#define CONFIG_EHCI_MMIO_BIG_ENDIAN
#define CONFIG_EHCI_DESC_BIG_ENDIAN
#define CONFIG_EHCI_HCD_INIT_AFTER_RESET /* re-init HCD after CMD_RESET */
#define CONFIG_USB_STORAGE
/* Comment this out to enable USB 1.1 device */
#define USB_2_0_DEVICE
#endif /* CONFIG_440EPX */
/* Partitions */
#define CONFIG_MAC_PARTITION
#define CONFIG_DOS_PARTITION