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m68knommu: make remaining ColdFire 5272 register definitions absolute addresses 

Make the remaining definitions of the 5272 ColdFire registers absolute
addresses. Currently some are relative to the MBAR peripheral region.

The various ColdFire parts use different methods to address the internal
registers, some are absolute, some are relative to peripheral regions
which can be mapped at different address ranges (such as the MBAR and IPSBAR
registers). We don't want to deal with this in the code when we are
accessing these registers, so make all register definitions the absolute
address - factoring out whether it is an offset into a peripheral region.

This makes them all consistently defined, and reduces the occasional bugs
caused by inconsistent definition of the register addresses.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
This commit is contained in:
Greg Ungerer 2012-09-14 16:25:12 +10:00
parent 35142b915b
commit d72a5abb7e
2 changed files with 14 additions and 17 deletions
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26
arch/m68k/include/asm/m5272sim.h
View File

@ -21,11 +21,11 @@
/*
* Define the 5272 SIM register set addresses.
*/
#define MCFSIM_SCR 0x04 /* SIM Config reg (r/w) */
#define MCFSIM_SPR 0x06 /* System Protection reg (r/w)*/
#define MCFSIM_PMR 0x08 /* Power Management reg (r/w) */
#define MCFSIM_APMR 0x0e /* Active Low Power reg (r/w) */
#define MCFSIM_DIR 0x10 /* Device Identity reg (r/w) */
#define MCFSIM_SCR (MCF_MBAR + 0x04) /* SIM Config reg */
#define MCFSIM_SPR (MCF_MBAR + 0x06) /* System Protection */
#define MCFSIM_PMR (MCF_MBAR + 0x08) /* Power Management */
#define MCFSIM_APMR (MCF_MBAR + 0x0e) /* Active Low Power */
#define MCFSIM_DIR (MCF_MBAR + 0x10) /* Device Identity */
#define MCFSIM_ICR1 (MCF_MBAR + 0x20) /* Intr Ctrl reg 1 */
#define MCFSIM_ICR2 (MCF_MBAR + 0x24) /* Intr Ctrl reg 2 */
@ -59,14 +59,14 @@
#define MCFSIM_CSBR7 (MCF_MBAR + 0x78) /* CS7 Base Address */
#define MCFSIM_CSOR7 (MCF_MBAR + 0x7c) /* CS7 Option */
#define MCFSIM_SDCR 0x180 /* SDRAM Configuration (r/w) */
#define MCFSIM_SDTR 0x184 /* SDRAM Timing (r/w) */
#define MCFSIM_DCAR0 0x4c /* DRAM 0 Address reg(r/w) */
#define MCFSIM_DCMR0 0x50 /* DRAM 0 Mask reg (r/w) */
#define MCFSIM_DCCR0 0x57 /* DRAM 0 Control reg (r/w) */
#define MCFSIM_DCAR1 0x58 /* DRAM 1 Address reg (r/w) */
#define MCFSIM_DCMR1 0x5c /* DRAM 1 Mask reg (r/w) */
#define MCFSIM_DCCR1 0x63 /* DRAM 1 Control reg (r/w) */
#define MCFSIM_SDCR (MCF_MBAR + 0x180) /* SDRAM Config */
#define MCFSIM_SDTR (MCF_MBAR + 0x184) /* SDRAM Timing */
#define MCFSIM_DCAR0 (MCF_MBAR + 0x4c) /* DRAM 0 Address */
#define MCFSIM_DCMR0 (MCF_MBAR + 0x50) /* DRAM 0 Mask */
#define MCFSIM_DCCR0 (MCF_MBAR + 0x57) /* DRAM 0 Control */
#define MCFSIM_DCAR1 (MCF_MBAR + 0x58) /* DRAM 1 Address */
#define MCFSIM_DCMR1 (MCF_MBAR + 0x5c) /* DRAM 1 Mask reg */
#define MCFSIM_DCCR1 (MCF_MBAR + 0x63) /* DRAM 1 Control */
#define MCFUART_BASE0 (MCF_MBAR + 0x100) /* Base address UART0 */
#define MCFUART_BASE1 (MCF_MBAR + 0x140) /* Base address UART1 */

5
arch/m68k/platform/coldfire/m5272.c
View File

@ -62,11 +62,8 @@ static void m5272_cpu_reset(void)
void __init config_BSP(char *commandp, int size)
{
#if defined (CONFIG_MOD5272)
volatile unsigned char *pivrp;
/* Set base of device vectors to be 64 */
pivrp = (volatile unsigned char *) (MCF_MBAR + MCFSIM_PIVR);
*pivrp = 0x40;
writeb(0x40, MCFSIM_PIVR);
#endif
#if defined(CONFIG_NETtel) || defined(CONFIG_SCALES)