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#
# Copyright (c) 2011-2012, ARM Limited. All rights reserved.
#
# This program and the accompanying materials
# are licensed and made available under the terms and conditions of the BSD License
# which accompanies this distribution. The full text of the license may be found at
# http://opensource.org/licenses/bsd-license.php
#
# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
#
#
#include <AsmMacroIoLib.h>
#include <Library/PcdLib.h>
#include <AutoGen.h>
#include <Drivers/PL35xSmc.h>
.text
#Maintain 8 byte alignment
.align 3
GCC_ASM_EXPORT(PL35xSmcInitialize)
GCC_ASM_EXPORT(PL35xSmcSetRefresh)
// IN r1 Smc Base Address
// IN r2 Smc Configuration Start Address
// IN r3 Smc Configuration End Address
// NOTE: This code is been called before any stack has been setup. It means some registers
// could be overwritten (case of 'r0')
ASM_PFX(PL35xSmcInitialize):
// While (SmcConfigurationStart < SmcConfigurationEnd)
cmp r2, r3
blxge lr
// Write to set_cycle register(holding register for NOR 1 cycle register or NAND cycle register)
ldr r0, [r2, #0x4]
str r0, [r1, #PL350_SMC_SET_CYCLES_OFFSET]
// Write to set_opmode register(holding register for NOR 1 opomode register or NAND opmode register)
ldr r0, [r2, #0x8]
str r0, [r1, #PL350_SMC_SET_OPMODE_OFFSET]
// Write to direct_cmd register so that the NOR 1 registers(set-cycles and opmode) are updated with holding registers
ldr r0, =PL350_SMC_DIRECT_CMD_ADDR_CMD_UPDATE
ldr r4, [r2, #0x0]
orr r0, r0, r4
str r0, [r1, #PL350_SMC_DIRECT_CMD_OFFSET]
add r2, #0xC
b ASM_PFX(PL35xSmcInitialize)
// IN r1 Smc Base Address
// IN r2 Smc Refresh Period 0
// IN r3 Smc Refresh Period 1
ASM_PFX(PL35xSmcSetRefresh):
str r2, [r1, #PL350_SMC_REFRESH_0_OFFSET]
str r3, [r1, #PL350_SMC_REFRESH_1_OFFSET]
blx lr
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