[U-Boot] [PATCH 1/2] 85xx: Fix relocation of CCSRBAR

[U-Boot] [PATCH 1/2] 85xx: Fix relocation of CCSRBAR

[Kumar Gala]

If the virtual address for CCSRBAR is the same after relocation but
the physical address is changing we'd end up having two TLB entries with
the same VA.  Instead we new us the new CCSRBAR virt address + 4k as a
temp virt address to access the old CCSRBAR to relocate it.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
---
 cpu/mpc85xx/cpu_init.c |    9 +++++----
 1 files changed, 5 insertions(+), 4 deletions(-)

diff --git a/cpu/mpc85xx/cpu_init.c b/cpu/mpc85xx/cpu_init.c
index 3a8aef2..1cb9ed9 100644
--- a/cpu/mpc85xx/cpu_init.c
+++ b/cpu/mpc85xx/cpu_init.c
@@ -140,14 +140,15 @@ void cpu_init_early_f(void)
 #if (CONFIG_SYS_CCSRBAR_DEFAULT != CONFIG_SYS_CCSRBAR_PHYS)
 	{
 		u32 temp;
+		volatile u32 *ccsr_virt =
+			(volatile u32 *)(CONFIG_SYS_CCSRBAR + 0x1000);
 
-		set_tlb(0, CONFIG_SYS_CCSRBAR_DEFAULT, CONFIG_SYS_CCSRBAR_DEFAULT,
+		set_tlb(0, (u32)ccsr_virt, CONFIG_SYS_CCSRBAR_DEFAULT,
 			MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
 			1, 1, BOOKE_PAGESZ_4K, 0);
 
-		temp = in_be32((volatile u32 *)CONFIG_SYS_CCSRBAR_DEFAULT);
-		out_be32((volatile u32 *)CONFIG_SYS_CCSRBAR_DEFAULT, CONFIG_SYS_CCSRBAR_PHYS >> 12);
-
+		temp = in_be32(ccsr_virt);
+		out_be32(ccsr_virt, CONFIG_SYS_CCSRBAR_PHYS >> 12);
 		temp = in_be32((volatile u32 *)CONFIG_SYS_CCSRBAR);
 	}
 #endif
-- 
1.5.6.5

[U-Boot] [PATCH 2/2] 85xx: init gd as early as possible

[Kumar Gala]

Moved up the initialization of GD so C code like set_tlb() can use
gd->flags to determine if we've relocated or not in the future.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
---
 cpu/mpc85xx/cpu_init.c |   12 ++++++------
 1 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/cpu/mpc85xx/cpu_init.c b/cpu/mpc85xx/cpu_init.c
index 1cb9ed9..ce3d855 100644
--- a/cpu/mpc85xx/cpu_init.c
+++ b/cpu/mpc85xx/cpu_init.c
@@ -132,6 +132,12 @@ void config_8560_ioports (volatile ccsr_cpm_t * cpm)
 /* We run cpu_init_early_f in AS = 1 */
 void cpu_init_early_f(void)
 {
+	/* Pointer is writable since we allocated a register for it */
+	gd = (gd_t *) (CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_GBL_DATA_OFFSET);
+
+	/* Clear initial global data */
+	memset ((void *) gd, 0, sizeof (gd_t));
+
 	set_tlb(0, CONFIG_SYS_CCSRBAR, CONFIG_SYS_CCSRBAR_PHYS,
 		MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
 		1, 0, BOOKE_PAGESZ_4K, 0);
@@ -153,12 +159,6 @@ void cpu_init_early_f(void)
 	}
 #endif
 
-	/* Pointer is writable since we allocated a register for it */
-	gd = (gd_t *) (CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_GBL_DATA_OFFSET);
-
-	/* Clear initial global data */
-	memset ((void *) gd, 0, sizeof (gd_t));
-
 	init_laws();
 	invalidate_tlb(0);
 	init_tlbs();
-- 
1.5.6.5