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-rw-r--r--cpu/ppc4xx/44x_spd_ddr2.c71
-rw-r--r--cpu/ppc4xx/cpu.c19
-rw-r--r--cpu/ppc4xx/fdt.c45
3 files changed, 99 insertions, 36 deletions
diff --git a/cpu/ppc4xx/44x_spd_ddr2.c b/cpu/ppc4xx/44x_spd_ddr2.c
index 4544b78..b40e4b1 100644
--- a/cpu/ppc4xx/44x_spd_ddr2.c
+++ b/cpu/ppc4xx/44x_spd_ddr2.c
@@ -60,6 +60,26 @@
"SDRAM_" #mnemonic, SDRAM_##mnemonic, data); \
} while (0)
+#if defined(CONFIG_440)
+/*
+ * This DDR2 setup code can dynamically setup the TLB entries for the DDR2
+ * memory region. Right now the cache should still be disabled in U-Boot
+ * because of the EMAC driver, that need its buffer descriptor to be located
+ * in non cached memory.
+ *
+ * If at some time this restriction doesn't apply anymore, just define
+ * CONFIG_4xx_DCACHE in the board config file and this code should setup
+ * everything correctly.
+ */
+#ifdef CONFIG_4xx_DCACHE
+/* enable caching on SDRAM */
+#define MY_TLB_WORD2_I_ENABLE 0
+#else
+/* disable caching on SDRAM */
+#define MY_TLB_WORD2_I_ENABLE TLB_WORD2_I_ENABLE
+#endif /* CONFIG_4xx_DCACHE */
+#endif /* CONFIG_440 */
+
#if defined(CONFIG_SPD_EEPROM)
/*-----------------------------------------------------------------------------+
@@ -131,22 +151,6 @@
#define NUMLOOPS 64 /* memory test loops */
/*
- * This DDR2 setup code can dynamically setup the TLB entries for the DDR2 memory
- * region. Right now the cache should still be disabled in U-Boot because of the
- * EMAC driver, that need it's buffer descriptor to be located in non cached
- * memory.
- *
- * If at some time this restriction doesn't apply anymore, just define
- * CONFIG_4xx_DCACHE in the board config file and this code should setup
- * everything correctly.
- */
-#ifdef CONFIG_4xx_DCACHE
-#define MY_TLB_WORD2_I_ENABLE 0 /* enable caching on SDRAM */
-#else
-#define MY_TLB_WORD2_I_ENABLE TLB_WORD2_I_ENABLE /* disable caching on SDRAM */
-#endif
-
-/*
* Newer PPC's like 440SPe, 460EX/GT can be equipped with more than 2GB of SDRAM.
* To support such configurations, we "only" map the first 2GB via the TLB's. We
* need some free virtual address space for the remaining peripherals like, SoC
@@ -2958,9 +2962,10 @@ static void test(void)
/*-----------------------------------------------------------------------------
* Function: initdram
- * Description: Configures the PPC405EX(r) DDR1/DDR2 SDRAM memory
- * banks. The configuration is performed using static, compile-
+ * Description: Configures the PPC4xx IBM DDR1/DDR2 SDRAM memory controller.
+ * The configuration is performed using static, compile-
* time parameters.
+ * Configures the PPC405EX(r) and PPC460EX/GT
*---------------------------------------------------------------------------*/
phys_size_t initdram(int board_type)
{
@@ -2976,6 +2981,18 @@ phys_size_t initdram(int board_type)
#if !defined(CONFIG_NAND_U_BOOT) || defined(CONFIG_NAND_SPL)
unsigned long val;
+#if defined(CONFIG_440)
+ mtdcr(SDRAM_R0BAS, CONFIG_SYS_SDRAM_R0BAS);
+ mtdcr(SDRAM_R1BAS, CONFIG_SYS_SDRAM_R1BAS);
+ mtdcr(SDRAM_R2BAS, CONFIG_SYS_SDRAM_R2BAS);
+ mtdcr(SDRAM_R3BAS, CONFIG_SYS_SDRAM_R3BAS);
+ mtdcr(SDRAM_PLBADDULL, CONFIG_SYS_SDRAM_PLBADDULL); /* MQ0_BAUL */
+ mtdcr(SDRAM_PLBADDUHB, CONFIG_SYS_SDRAM_PLBADDUHB); /* MQ0_BAUH */
+ mtdcr(SDRAM_CONF1LL, CONFIG_SYS_SDRAM_CONF1LL);
+ mtdcr(SDRAM_CONF1HB, CONFIG_SYS_SDRAM_CONF1HB);
+ mtdcr(SDRAM_CONFPATHB, CONFIG_SYS_SDRAM_CONFPATHB);
+#endif
+
/* Set Memory Bank Configuration Registers */
mtsdram(SDRAM_MB0CF, CONFIG_SYS_SDRAM0_MB0CF);
@@ -3069,6 +3086,14 @@ phys_size_t initdram(int board_type)
mfsdram(SDRAM_MCOPT2, val);
mtsdram(SDRAM_MCOPT2, val | SDRAM_MCOPT2_DCEN_ENABLE);
+#if defined(CONFIG_440)
+ /*
+ * Program TLB entries with caches enabled, for best performace
+ * while auto-calibrating and ECC generation
+ */
+ program_tlb(0, 0, (CONFIG_SYS_MBYTES_SDRAM << 20), 0);
+#endif
+
#if defined(CONFIG_PPC4xx_DDR_AUTOCALIBRATION)
#if !defined(CONFIG_NAND_U_BOOT) && !defined(CONFIG_NAND_SPL)
/*------------------------------------------------------------------
@@ -3082,6 +3107,16 @@ phys_size_t initdram(int board_type)
ecc_init(CONFIG_SYS_SDRAM_BASE, CONFIG_SYS_MBYTES_SDRAM << 20);
#endif /* defined(CONFIG_DDR_ECC) */
+#if defined(CONFIG_440)
+ /*
+ * Now after initialization (auto-calibration and ECC generation)
+ * remove the TLB entries with caches enabled and program again with
+ * desired cache functionality
+ */
+ remove_tlb(0, (CONFIG_SYS_MBYTES_SDRAM << 20));
+ program_tlb(0, 0, (CONFIG_SYS_MBYTES_SDRAM << 20), MY_TLB_WORD2_I_ENABLE);
+#endif
+
ppc4xx_ibm_ddr2_register_dump();
#if defined(CONFIG_PPC4xx_DDR_AUTOCALIBRATION)
diff --git a/cpu/ppc4xx/cpu.c b/cpu/ppc4xx/cpu.c
index 66a7737..a676b30 100644
--- a/cpu/ppc4xx/cpu.c
+++ b/cpu/ppc4xx/cpu.c
@@ -41,6 +41,18 @@ DECLARE_GLOBAL_DATA_PTR;
void board_reset(void);
+/*
+ * To provide an interface to detect CPU number for boards that support
+ * more then one CPU, we implement the "weak" default functions here.
+ *
+ * Returns CPU number
+ */
+int __get_cpu_num(void)
+{
+ return NA_OR_UNKNOWN_CPU;
+}
+int get_cpu_num(void) __attribute__((weak, alias("__get_cpu_num")));
+
#if defined(CONFIG_405GP) || \
defined(CONFIG_440EP) || defined(CONFIG_440GR) || \
defined(CONFIG_440EPX) || defined(CONFIG_440GRX)
@@ -274,8 +286,13 @@ int checkcpu (void)
#if !defined(CONFIG_IOP480)
char addstr[64] = "";
sys_info_t sys_info;
+ int cpu_num;
- puts ("CPU: ");
+ cpu_num = get_cpu_num();
+ if (cpu_num >= 0)
+ printf("CPU%d: ", cpu_num);
+ else
+ puts("CPU: ");
get_sys_info(&sys_info);
diff --git a/cpu/ppc4xx/fdt.c b/cpu/ppc4xx/fdt.c
index a97484f..c55e1cf 100644
--- a/cpu/ppc4xx/fdt.c
+++ b/cpu/ppc4xx/fdt.c
@@ -37,29 +37,40 @@ DECLARE_GLOBAL_DATA_PTR;
void __ft_board_setup(void *blob, bd_t *bd)
{
- u32 val[4];
int rc;
+ int i;
+ u32 bxcr;
+ u32 ranges[EBC_NUM_BANKS * 4];
+ u32 *p = ranges;
+ char *ebc_path = "/plb/opb/ebc";
ft_cpu_setup(blob, bd);
- /* Fixup NOR mapping */
- val[0] = 0; /* chip select number */
- val[1] = 0; /* always 0 */
- val[2] = gd->bd->bi_flashstart;
- val[3] = gd->bd->bi_flashsize;
- if (fdt_path_offset(blob, "/plb/opb/ebc") >= 0) {
- rc = fdt_find_and_setprop(blob, "/plb/opb/ebc", "ranges",
- val, sizeof(val), 1);
- } else {
- /*
- * Some 405 PPC's have EBC as direct PLB child in the dts
- */
- rc = fdt_find_and_setprop(blob, "/plb/ebc", "ranges",
- val, sizeof(val), 1);
+ /*
+ * Read 4xx EBC bus bridge registers to get mappings of the
+ * peripheral banks into the OPB/PLB address space
+ */
+ for (i = 0; i < EBC_NUM_BANKS; i++) {
+ mtdcr(ebccfga, EBC_BXCR(i));
+ bxcr = mfdcr(ebccfgd);
+
+ if ((bxcr & EBC_BXCR_BU_MASK) != EBC_BXCR_BU_NONE) {
+ *p++ = i;
+ *p++ = 0;
+ *p++ = bxcr & EBC_BXCR_BAS_MASK;
+ *p++ = EBC_BXCR_BANK_SIZE(bxcr);
+ }
}
- if (rc)
- printf("Unable to update property NOR mapping, err=%s\n",
+
+ /* Some 405 PPC's have EBC as direct PLB child in the dts */
+ if (fdt_path_offset(blob, "/plb/opb/ebc") < 0)
+ strcpy(ebc_path, "/plb/ebc");
+ rc = fdt_find_and_setprop(blob, ebc_path, "ranges", ranges,
+ (p - ranges) * sizeof(u32), 1);
+ if (rc) {
+ printf("Unable to update property EBC mappings, err=%s\n",
fdt_strerror(rc));
+ }
}
void ft_board_setup(void *blob, bd_t *bd) __attribute__((weak, alias("__ft_board_setup")));
generated by cgit v1.1 at 2024-12-01 20:02:26 +0000