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ppc4xx: Change LWMON5 to not use OCM for init-ram and POST anymore

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This patch configures the LWMON5 port to use d-cache as init-ram and
the unused GPT0_COMP6 as POST WORD storage.

Signed-off-by: Stefan Roese <sr@denx.de>
master
Stefan Roese 17 years ago
parent 1754f50b71
commit 8f24e0637a
3 changed files with 14 additions and 11 deletions
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  1. 2
      board/lwmon5/init.S
  2. 17
      include/configs/lwmon5.h
  3. 4
      include/ppc440.h

2
board/lwmon5/init.S
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@ -57,7 +57,7 @@ tlbtab:
#ifdef CFG_INIT_RAM_DCACHE
/* TLB-entry for init-ram in dcache (SA_I must be turned off!) */
tlbentry(CFG_INIT_RAM_ADDR, SZ_64K, CFG_INIT_RAM_ADDR, 0, AC_R|AC_W|AC_X|SA_G)
tlbentry(CFG_INIT_RAM_ADDR, SZ_4K, CFG_INIT_RAM_ADDR, 0, AC_R|AC_W|AC_X|SA_G)
#endif
/* TLB-entry for PCI Memory */

17
include/configs/lwmon5.h
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@ -71,15 +71,20 @@
/*-----------------------------------------------------------------------
* Initial RAM & stack pointer
*----------------------------------------------------------------------*/
/* 440EPx/440GRx have 16KB of internal SRAM, so no need for D-Cache */
#define CFG_INIT_RAM_ADDR CFG_OCM_BASE /* OCM */
#define CFG_OCM_DATA_ADDR CFG_OCM_BASE
/*
* On LWMON5 we use D-cache as init-ram and stack pointer. We also move
* the POST_WORD from OCM to a 440EPx register that preserves it's
* content during reset (GPT0_COM6). This way we reserve the OCM (16k)
* for logbuffer only.
*/
#define CFG_INIT_RAM_DCACHE 1 /* d-cache as init ram */
#define CFG_INIT_RAM_ADDR 0x70000000 /* DCache */
#define CFG_INIT_RAM_END (4 << 10)
#define CFG_GBL_DATA_SIZE 256 /* num bytes initial data*/
#define CFG_GBL_DATA_OFFSET (CFG_INIT_RAM_END - CFG_GBL_DATA_SIZE)
#define CFG_POST_WORD_ADDR (CFG_GBL_DATA_OFFSET - 0x4)
#define CFG_INIT_SP_OFFSET CFG_POST_WORD_ADDR
#define CFG_INIT_SP_OFFSET CFG_GBL_DATA_OFFSET
#define CFG_POST_ALT_WORD_ADDR (CFG_PERIPHERAL_BASE + GPT0_COMP6)
/* unused GPT0 COMP reg */
/*-----------------------------------------------------------------------
* Serial Port

4
include/ppc440.h
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@ -1354,8 +1354,6 @@
#define plb1_bearl (PLB_ARBITER_BASE+ 0x0C)
#define plb1_bearh (PLB_ARBITER_BASE+ 0x0D)
#if defined(CONFIG_440EP) || defined(CONFIG_440GR) || \
defined(CONFIG_440EPX) || defined(CONFIG_440GRX)
/* Pin Function Control Register 1 */
#define SDR0_PFC1 0x4101
#define SDR0_PFC1_U1ME_MASK 0x02000000 /* UART1 Mode Enable */
@ -1421,7 +1419,7 @@
#define SDR0_MFR_PKT_REJ_EN1 0x00080000 /* Pkt Rej. Enable on EMAC3(1) */
#define SDR0_MFR_PKT_REJ_POL 0x00200000 /* Packet Reject Polarity */
#endif /* defined(CONFIG_440EP) || defined(CONFIG_440GR) */
#define GPT0_COMP6 0x00000098
#if defined(CONFIG_440EPX) || defined(CONFIG_440GRX)
#define SDR0_USB2D0CR 0x0320

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