diff options
author | wdenk <wdenk> | 2003-06-22 17:18:28 +0000 |
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committer | wdenk <wdenk> | 2003-06-22 17:18:28 +0000 |
commit | 3595ac4979e648e102c7a500e3c63193a27953bc (patch) | |
tree | b15884457b571ad55691fa8a0a6841d5dde15a14 /board/mpc8266ads | |
parent | 9a0e21a3a87830f66a93c17d1bca66fd12d860ae (diff) |
* Patch by Rune Torgersen, 4 Jun 2003:
add large memory support for MPC8266ADS board
* Patch by Richard Woodruff, 19 June 03:
- Enabled standard u-boot device abstraction for ARM
- Enabled console device for ARM
- Initilized bi_baudrate for ARM
* Patch by Bill Hargen, 23 Apr 2003:
fix byte order for 824x I2C addresses (write op)
Diffstat (limited to 'board/mpc8266ads')
-rw-r--r-- | board/mpc8266ads/mpc8266ads.c | 21 |
1 files changed, 20 insertions, 1 deletions
diff --git a/board/mpc8266ads/mpc8266ads.c b/board/mpc8266ads/mpc8266ads.c index 501e610d59..c6c8d761cb 100644 --- a/board/mpc8266ads/mpc8266ads.c +++ b/board/mpc8266ads/mpc8266ads.c @@ -46,7 +46,7 @@ * PSDMR_BUFCMD adds a clock * 0 no extra clock */ -#define CONFIG_PBI 0 +#define CONFIG_PBI PSDMR_PBI #define PESSIMISTIC_SDRAM 0 #define EAMUX 0 /* EST requires EAMUX */ #define BUFCMD 0 @@ -379,6 +379,25 @@ long int initdram(int board_type) sdram_size = 1 << (rows + cols + banks + width); + /* hack for high density memory (512MB per CS) */ + /* !!!!! Will ONLY work with Page Based Interleave !!!!! + ( PSDMR[PBI] = 1 ) + */ + /* mamory actually has 11 column addresses, but the memory controller + doesn't really care. + the calculations that follow will however move the rows so that + they are muxed one bit off if you use 11 bit columns. + The solution is to tell the memory controller the correct size of the memory + but change the number of columns to 10 afterwards. + The 11th column addre will still be mucxed correctly onto the bus. + + Also be aware that the MPC8266ADS board Rev B has not connected + Row addres 13 to anything. + + The fix is to connect ADD16 (from U37-47) to SADDR12 (U28-126) + */ + if (cols > 10) + cols = 10; #if(CONFIG_PBI == 0) /* bank-based interleaving */ rowst = ((32 - 6) - (rows + cols + width)) * 2; |