SEEPREOM/PIBMEM Loader

RTC: 123472
Change-Id: I625ade56cbd56d7c3e7c6510e863351f054408ee
Reviewed-on: http://gfw160.aus.stglabs.ibm.com:8080/gerrit/19793
Tested-by: Jenkins Server
Reviewed-by: Amit J. Tendolkar <amit.tendolkar@in.ibm.com>

1 files changed, 57 insertions, 0 deletions

diff --git a/sbe/image/pm_loader.S b/sbe/image/pm_loader.S
new file mode 100644
index 00000000..84c64020
--- /dev/null
+++ b/sbe/image/pm_loader.S
@@ -0,0 +1,57 @@
+
+        .nolist
+#include "pk.h"
+#include "sbe_link.H"
+        .list
+
+### ****************************************************************************
+### .loader_text - This section contains pm loader code
+###                @TODO via RTC 136315
+###                It also contains vector code. We can remove vector code
+###                once OTPROM support for simics is in.
+### ****************************************************************************
+
+        .section .loader_text, "ax", @progbits
+
+        .global __vectors
+
+__vectors:
+
+        ############################################################
+        # 0x0040 : System Reset
+        ############################################################
+        .global __system_reset
+        .org __vectors + 0x0040
+__system_reset:
+        b   __pmLoader
+
+
+__pmLoader:
+        _liw     %r3, SBE_LOADER_BASE_SECTION # Base Loader Section Location
+        _liw     %r4, SBE_LOADER_BASE_ORIGIN  # dest
+        _liw     %r9, SBE_SEEPROM_BASE_ORIGIN
+        lwz       r5, 4(r3)   #size of image in bytes
+        li     r6, 3
+        srw    r5, r5, r6   # Number of double word transfers
+        mtctr   r5          # set the counter for loop
+        lwz    r8, 0(r3)    # offset of baseloader section
+        adde    r8, r8, r9  # add base address to offset to get absolute address
+
+copy_loop:
+        lvd    d28, 0(r8)
+        stvd    d28, 0(r4)
+        addi    r8, r8, 8
+        addi    r4, r4, 8
+        bdnz    copy_loop
+
+        ############################################################
+        # SBE entry function is 4 byte number in image header
+        ############################################################
+
+        _liw     %r3,  SBE_SEEPROM_BASE_ORIGIN + SBE_LOADER_ENTRY_HEADER_OFFSET
+        lwz      r6, 0(r3)
+        mtlr  r6
+        blr
+
+        .epilogue __pmLoader
+