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powerpc: mpc8xx: redistribute data in CPM dpram

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Some malloc memory is needed at startup for DM model.
Lets reorganise the use of the CPM dpram.

The MPC866/885 dpram, we have 8kbytes dual port RAM, which is usable as:
IMMR + 0x2000..0x2800: BD/Data/Microcode
IMMR + 0x2800..0x2e00: BD/Data
IMMR + 0x2e00..0x3800: BD/Data/Microcode
IMMR + 0x3800..0x3a00: BD/Data
IMMR + 0x3a00..0x3c00: BD/Data/Microcode
IMMR + 0x3c00..0x4000: Parameters for the Peripheral Controllers

Lets reallocate all BDs in the 3800..3a00 area and give the full
2800..2e00 for dynamic RAM allocation including global data

That way, the microcode areas remain available if needed one day.

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
This commit is contained in:
Christophe Leroy
2018-03-16 17:20:45 +01:00
committed by Tom Rini
parent 18f8d4c60d
commit b1d62424cb
1 changed files with 8 additions and 8 deletions
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16
arch/powerpc/include/asm/cpm_8xx.h
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@@ -51,14 +51,14 @@
/*
* DPRAM defines and allocation functions
*/
#define CPM_SERIAL_BASE 0x0800
#define CPM_I2C_BASE 0x0820
#define CPM_SPI_BASE 0x0840
#define CPM_FEC_BASE 0x0860
#define CPM_SERIAL2_BASE 0x08E0
#define CPM_SCC_BASE 0x0900
#define CPM_POST_BASE 0x0980
#define CPM_WLKBD_BASE 0x0a00
#define CPM_SERIAL_BASE 0x1800
#define CPM_I2C_BASE 0x1820
#define CPM_SPI_BASE 0x1840
#define CPM_FEC_BASE 0x1860
#define CPM_SERIAL2_BASE 0x18e0
#define CPM_SCC_BASE 0x1900
#define CPM_POST_BASE 0x1980
#define CPM_WLKBD_BASE 0x1a00
#define BD_IIC_START ((uint) 0x0400) /* <- please use CPM_I2C_BASE !! */