ppc4xx: Enable Primordial Stack for 40x and Unify ECC Handling
This patch (Part 1 of 2):
* Rolls up a suite of changes to enable correct primordial stack and
global data handling when the data cache is used for such a purpose
for PPC40x-variants (i.e. CFG_INIT_DCACHE_CS).
* Related to the first, unifies DDR2 SDRAM and ECC initialization by
eliminating redundant ECC initialization implementations and moving
redundant SDRAM initialization out of board code into shared 4xx
code.
* Enables MCSR visibility on the 405EX(r).
* Enables the use of the data cache for initial RAM on
both AMCC's Kilauea and Makalu and removes a redundant
CFG_POST_MEMORY flag from each board's CONFIG_POST value.
- Removed, per Stefan Roese's request, defunct memory.c file for
Makalu and rolled sdram_init from it into makalu.c.
With respect to the 4xx DDR initialization and ECC unification, there
is certainly more work that can and should be done (file renaming,
etc.). However, that can be handled at a later date on a second or
third pass. As it stands, this patch moves things forward in an
incremental yet positive way for those platforms that utilize this
code and the features associated with it.
Signed-off-by: Grant Erickson <gerickson@nuovations.com>
Signed-off-by: Stefan Roese <sr@denx.de>
diff --git a/include/ppc405.h b/include/ppc405.h
index d953378..c994289 100644
--- a/include/ppc405.h
+++ b/include/ppc405.h
@@ -22,6 +22,10 @@
#ifndef __PPC405_H__
#define __PPC405_H__
+/* Define bits and masks for real-mode storage attribute control registers */
+#define PPC_128MB_SACR_BIT(addr) ((addr) >> 27)
+#define PPC_128MB_SACR_VALUE(addr) PPC_REG_VAL(PPC_128MB_SACR_BIT(addr),1)
+
#ifndef CONFIG_IOP480
#define CFG_DCACHE_SIZE (16 << 10) /* For AMCC 405 CPUs */
#else
@@ -363,6 +367,120 @@
#endif /* defined(CONFIG_405EZ) */
/******************************************************************************
+ * External Bus Controller (EBC)
+ *****************************************************************************/
+
+/* Bank Configuration Register */
+#define EBC_BXCR_BAS_MASK PPC_REG_VAL(11, 0xFFF)
+#define EBC_BXCR_BAS_ENCODE(n) (((static_cast(unsigned long, n)) & \
+ EBC_BXCR_BAS_MASK) << 0)
+#define EBC_BXCR_BS_MASK PPC_REG_VAL(14, 0x7)
+#define EBC_BXCR_BS_1MB PPC_REG_VAL(14, 0x0)
+#define EBC_BXCR_BS_2MB PPC_REG_VAL(14, 0x1)
+#define EBC_BXCR_BS_4MB PPC_REG_VAL(14, 0x2)
+#define EBC_BXCR_BS_8MB PPC_REG_VAL(14, 0x3)
+#define EBC_BXCR_BS_16MB PPC_REG_VAL(14, 0x4)
+#define EBC_BXCR_BS_32MB PPC_REG_VAL(14, 0x5)
+#define EBC_BXCR_BS_64MB PPC_REG_VAL(14, 0x6)
+#define EBC_BXCR_BS_128MB PPC_REG_VAL(14, 0x7)
+#define EBC_BXCR_BU_MASK PPC_REG_VAL(16, 0x3)
+#define EBC_BXCR_BU_NONE PPC_REG_VAL(16, 0x0)
+#define EBC_BXCR_BU_R PPC_REG_VAL(16, 0x1)
+#define EBC_BXCR_BU_W PPC_REG_VAL(16, 0x2)
+#define EBC_BXCR_BU_RW PPC_REG_VAL(16, 0x3)
+#define EBC_BXCR_BW_MASK PPC_REG_VAL(18, 0x3)
+#define EBC_BXCR_BW_8BIT PPC_REG_VAL(18, 0x0)
+#define EBC_BXCR_BW_16BIT PPC_REG_VAL(18, 0x1)
+#define EBC_BXCR_BW_32BIT PPC_REG_VAL(18, 0x3)
+
+/* Bank Access Parameter Register */
+#define EBC_BXAP_BME_ENABLED PPC_REG_VAL(0, 0x1)
+#define EBC_BXAP_BME_DISABLED PPC_REG_VAL(0, 0x0)
+#define EBC_BXAP_TWT_ENCODE(n) PPC_REG_VAL(8, \
+ (static_cast(unsigned long, n)) \
+ & 0xFF)
+#define EBC_BXAP_FWT_ENCODE(n) PPC_REG_VAL(5, \
+ (static_cast(unsigned long, n)) \
+ & 0x1F)
+#define EBC_BXAP_BWT_ENCODE(n) PPC_REG_VAL(8, \
+ (static_cast(unsigned long, n)) \
+ & 0x7)
+#define EBC_BXAP_BCE_DISABLE PPC_REG_VAL(9, 0x0)
+#define EBC_BXAP_BCE_ENABLE PPC_REG_VAL(9, 0x1)
+#define EBC_BXAP_BCT_MASK PPC_REG_VAL(11, 0x3)
+#define EBC_BXAP_BCT_2TRANS PPC_REG_VAL(11, 0x0)
+#define EBC_BXAP_BCT_4TRANS PPC_REG_VAL(11, 0x1)
+#define EBC_BXAP_BCT_8TRANS PPC_REG_VAL(11, 0x2)
+#define EBC_BXAP_BCT_16TRANS PPC_REG_VAL(11, 0x3)
+#define EBC_BXAP_CSN_ENCODE(n) PPC_REG_VAL(13, \
+ (static_cast(unsigned long, n)) \
+ & 0x3)
+#define EBC_BXAP_OEN_ENCODE(n) PPC_REG_VAL(15, \
+ (static_cast(unsigned long, n)) \
+ & 0x3)
+#define EBC_BXAP_WBN_ENCODE(n) PPC_REG_VAL(17, \
+ (static_cast(unsigned long, n)) \
+ & 0x3)
+#define EBC_BXAP_WBF_ENCODE(n) PPC_REG_VAL(19, \
+ (static_cast(unsigned long, n)) \
+ & 0x3)
+#define EBC_BXAP_TH_ENCODE(n) PPC_REG_VAL(22, \
+ (static_cast(unsigned long, n)) \
+ & 0x7)
+#define EBC_BXAP_RE_ENABLED PPC_REG_VAL(23, 0x1)
+#define EBC_BXAP_RE_DISABLED PPC_REG_VAL(23, 0x0)
+#define EBC_BXAP_SOR_DELAYED PPC_REG_VAL(24, 0x0)
+#define EBC_BXAP_SOR_NONDELAYED PPC_REG_VAL(24, 0x1)
+#define EBC_BXAP_BEM_WRITEONLY PPC_REG_VAL(25, 0x0)
+#define EBC_BXAP_BEM_RW PPC_REG_VAL(25, 0x1)
+#define EBC_BXAP_PEN_DISABLED PPC_REG_VAL(26, 0x0)
+#define EBC_BXAP_PEN_ENABLED PPC_REG_VAL(26, 0x1)
+
+/* Configuration Register */
+#define EBC_CFG_LE_MASK PPC_REG_VAL(0, 0x1)
+#define EBC_CFG_LE_UNLOCK PPC_REG_VAL(0, 0x0)
+#define EBC_CFG_LE_LOCK PPC_REG_VAL(0, 0x1)
+#define EBC_CFG_PTD_MASK PPC_REG_VAL(1, 0x1)
+#define EBC_CFG_PTD_ENABLE PPC_REG_VAL(1, 0x0)
+#define EBC_CFG_PTD_DISABLE PPC_REG_VAL(1, 0x1)
+#define EBC_CFG_RTC_MASK PPC_REG_VAL(4, 0x7)
+#define EBC_CFG_RTC_16PERCLK PPC_REG_VAL(4, 0x0)
+#define EBC_CFG_RTC_32PERCLK PPC_REG_VAL(4, 0x1)
+#define EBC_CFG_RTC_64PERCLK PPC_REG_VAL(4, 0x2)
+#define EBC_CFG_RTC_128PERCLK PPC_REG_VAL(4, 0x3)
+#define EBC_CFG_RTC_256PERCLK PPC_REG_VAL(4, 0x4)
+#define EBC_CFG_RTC_512PERCLK PPC_REG_VAL(4, 0x5)
+#define EBC_CFG_RTC_1024PERCLK PPC_REG_VAL(4, 0x6)
+#define EBC_CFG_RTC_2048PERCLK PPC_REG_VAL(4, 0x7)
+#define EBC_CFG_ATC_MASK PPC_REG_VAL(5, 0x1)
+#define EBC_CFG_ATC_HI PPC_REG_VAL(5, 0x0)
+#define EBC_CFG_ATC_PREVIOUS PPC_REG_VAL(5, 0x1)
+#define EBC_CFG_DTC_MASK PPC_REG_VAL(6, 0x1)
+#define EBC_CFG_DTC_HI PPC_REG_VAL(6, 0x0)
+#define EBC_CFG_DTC_PREVIOUS PPC_REG_VAL(6, 0x1)
+#define EBC_CFG_CTC_MASK PPC_REG_VAL(7, 0x1)
+#define EBC_CFG_CTC_HI PPC_REG_VAL(7, 0x0)
+#define EBC_CFG_CTC_PREVIOUS PPC_REG_VAL(7, 0x1)
+#define EBC_CFG_OEO_MASK PPC_REG_VAL(8, 0x1)
+#define EBC_CFG_OEO_DISABLE PPC_REG_VAL(8, 0x0)
+#define EBC_CFG_OEO_ENABLE PPC_REG_VAL(8, 0x1)
+#define EBC_CFG_EMC_MASK PPC_REG_VAL(9, 0x1)
+#define EBC_CFG_EMC_NONDEFAULT PPC_REG_VAL(9, 0x0)
+#define EBC_CFG_EMC_DEFAULT PPC_REG_VAL(9, 0x1)
+#define EBC_CFG_PME_MASK PPC_REG_VAL(14, 0x1)
+#define EBC_CFG_PME_DISABLE PPC_REG_VAL(14, 0x0)
+#define EBC_CFG_PME_ENABLE PPC_REG_VAL(14, 0x1)
+#define EBC_CFG_PMT_MASK PPC_REG_VAL(19, 0x1F)
+#define EBC_CFG_PMT_ENCODE(n) PPC_REG_VAL(19, \
+ (static_cast(unsigned long, n)) \
+ & 0x1F)
+#define EBC_CFG_PR_MASK PPC_REG_VAL(21, 0x3)
+#define EBC_CFG_PR_16 PPC_REG_VAL(21, 0x0)
+#define EBC_CFG_PR_32 PPC_REG_VAL(21, 0x1)
+#define EBC_CFG_PR_64 PPC_REG_VAL(21, 0x2)
+#define EBC_CFG_PR_128 PPC_REG_VAL(21, 0x3)
+
+/******************************************************************************
* SDRAM Controller
******************************************************************************/
/* values for memcfga register - indirect addressing of these regs */
@@ -1218,19 +1336,43 @@
/*-----------------------------------------------------------------------------+
| Memory Bank 0-7 configuration
-+-----------------------------------------------------------------------------*/
-#define SDRAM_RXBAS_SDSZ_4 0x00000000 /* 4M */
-#define SDRAM_RXBAS_SDSZ_8 0x00001000 /* 8M */
-#define SDRAM_RXBAS_SDSZ_16 0x00002000 /* 16M */
-#define SDRAM_RXBAS_SDSZ_32 0x00003000 /* 32M */
-#define SDRAM_RXBAS_SDSZ_64 0x00004000 /* 64M */
-#define SDRAM_RXBAS_SDSZ_128 0x00005000 /* 128M */
-#define SDRAM_RXBAS_SDSZ_256 0x00006000 /* 256M */
-#define SDRAM_RXBAS_SDSZ_512 0x00007000 /* 512M */
-#define SDRAM_RXBAS_SDSZ_1024 0x00008000 /* 1024M */
-#define SDRAM_RXBAS_SDSZ_2048 0x00009000 /* 2048M */
-#define SDRAM_RXBAS_SDSZ_4096 0x0000a000 /* 4096M */
-#define SDRAM_RXBAS_SDSZ_8192 0x0000b000 /* 8192M */
++----------------------------------------------------------------------------*/
+#define SDRAM_RXBAS_SDSZ_MASK PPC_REG_VAL(19, 0xF)
+#define SDRAM_RXBAS_SDSZ_4MB PPC_REG_VAL(19, 0x0)
+#define SDRAM_RXBAS_SDSZ_8MB PPC_REG_VAL(19, 0x1)
+#define SDRAM_RXBAS_SDSZ_16MB PPC_REG_VAL(19, 0x2)
+#define SDRAM_RXBAS_SDSZ_32MB PPC_REG_VAL(19, 0x3)
+#define SDRAM_RXBAS_SDSZ_64MB PPC_REG_VAL(19, 0x4)
+#define SDRAM_RXBAS_SDSZ_128MB PPC_REG_VAL(19, 0x5)
+#define SDRAM_RXBAS_SDSZ_256MB PPC_REG_VAL(19, 0x6)
+#define SDRAM_RXBAS_SDSZ_512MB PPC_REG_VAL(19, 0x7)
+#define SDRAM_RXBAS_SDSZ_1024MB PPC_REG_VAL(19, 0x8)
+#define SDRAM_RXBAS_SDSZ_2048MB PPC_REG_VAL(19, 0x9)
+#define SDRAM_RXBAS_SDSZ_4096MB PPC_REG_VAL(19, 0xA)
+#define SDRAM_RXBAS_SDSZ_8192MB PPC_REG_VAL(19, 0xB)
+#define SDRAM_RXBAS_SDSZ_8 SDRAM_RXBAS_SDSZ_8MB
+#define SDRAM_RXBAS_SDSZ_16 SDRAM_RXBAS_SDSZ_16MB
+#define SDRAM_RXBAS_SDSZ_32 SDRAM_RXBAS_SDSZ_32MB
+#define SDRAM_RXBAS_SDSZ_64 SDRAM_RXBAS_SDSZ_64MB
+#define SDRAM_RXBAS_SDSZ_128 SDRAM_RXBAS_SDSZ_128MB
+#define SDRAM_RXBAS_SDSZ_256 SDRAM_RXBAS_SDSZ_256MB
+#define SDRAM_RXBAS_SDSZ_512 SDRAM_RXBAS_SDSZ_512MB
+#define SDRAM_RXBAS_SDSZ_1024 SDRAM_RXBAS_SDSZ_1024MB
+#define SDRAM_RXBAS_SDSZ_2048 SDRAM_RXBAS_SDSZ_2048MB
+#define SDRAM_RXBAS_SDSZ_4096 SDRAM_RXBAS_SDSZ_4096MB
+#define SDRAM_RXBAS_SDSZ_8192 SDRAM_RXBAS_SDSZ_8192MB
+#define SDRAM_RXBAS_SDAM_MODE0 PPC_REG_VAL(23, 0x0)
+#define SDRAM_RXBAS_SDAM_MODE1 PPC_REG_VAL(23, 0x1)
+#define SDRAM_RXBAS_SDAM_MODE2 PPC_REG_VAL(23, 0x2)
+#define SDRAM_RXBAS_SDAM_MODE3 PPC_REG_VAL(23, 0x3)
+#define SDRAM_RXBAS_SDAM_MODE4 PPC_REG_VAL(23, 0x4)
+#define SDRAM_RXBAS_SDAM_MODE5 PPC_REG_VAL(23, 0x5)
+#define SDRAM_RXBAS_SDAM_MODE6 PPC_REG_VAL(23, 0x6)
+#define SDRAM_RXBAS_SDAM_MODE7 PPC_REG_VAL(23, 0x7)
+#define SDRAM_RXBAS_SDAM_MODE8 PPC_REG_VAL(23, 0x8)
+#define SDRAM_RXBAS_SDAM_MODE9 PPC_REG_VAL(23, 0x9)
+#define SDRAM_RXBAS_SDBE_DISABLE PPC_REG_VAL(31, 0x0)
+#define SDRAM_RXBAS_SDBE_ENABLE PPC_REG_VAL(31, 0x1)
/*-----------------------------------------------------------------------------+
| Memory Controller Status
@@ -1612,4 +1754,27 @@
#define SDR0_PFC1_GPT_FREQ 0x0000000f
#endif
+/* General Purpose Timer (GPT) Register Offsets */
+#define GPT0_TBC 0x00000000
+#define GPT0_IM 0x00000018
+#define GPT0_ISS 0x0000001C
+#define GPT0_ISC 0x00000020
+#define GPT0_IE 0x00000024
+#define GPT0_COMP0 0x00000080
+#define GPT0_COMP1 0x00000084
+#define GPT0_COMP2 0x00000088
+#define GPT0_COMP3 0x0000008C
+#define GPT0_COMP4 0x00000090
+#define GPT0_COMP5 0x00000094
+#define GPT0_COMP6 0x00000098
+#define GPT0_MASK0 0x000000C0
+#define GPT0_MASK1 0x000000C4
+#define GPT0_MASK2 0x000000C8
+#define GPT0_MASK3 0x000000CC
+#define GPT0_MASK4 0x000000D0
+#define GPT0_MASK5 0x000000D4
+#define GPT0_MASK6 0x000000D8
+#define GPT0_DCT0 0x00000110
+#define GPT0_DCIS 0x0000011C
+
#endif /* __PPC405_H__ */