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sw_apps: openamp: modified rpc_demp application

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This patch modifies openamp rpc_demo application to
remove the hardcoded shared memory region and support for the
memory region configuration as per requirement of the code
in MPU region settings

Signed-off-by: Kinjal Pravinbhai Patel <patelki@xilinx.com>
Acked-by: Anirudha Sarangi   <anirudh@xilinx.com>
This commit is contained in:
Kinjal Pravinbhai Patel 2015-07-27 17:19:42 +05:30 • committed by Nava kishore Manne
parent 31b60a0499
commit 73e7150785
2 changed files with 23 additions and 44 deletions
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55
lib/sw_apps/openamp_rpc_demo/src/baremetal.c
View file

@ -36,6 +36,7 @@
#include "xil_cache.h"
#include "xil_mmu.h"
#include "baremetal.h"
#include "env.h"
XScuGic InterruptController;
@ -87,38 +88,6 @@ void zynqMP_r5_irq_isr() {
XScuGic_CPUWriteReg(&InterruptController,XSCUGIC_EOI_OFFSET, raw_irq);
}
/***********************************************************************
*
*
* zynqMP_r5_map_mem_region
*
*
* This function sets-up the region of memory based on the given
* attributes
* There is no MMU for R5, no need to map phy address to vrt_addr
*
* @param addr - Starting address of memory region
* @parma size - size of region
* @param attrib - Attributes for memory region
*
*
* OUTPUTS
*
* None
*
***********************************************************************/
void zynqMP_r5_map_mem_region(u32 addr, u32 size, u32 attrib) {
u32 Index, NumSize;
/* Calculating the number of MBs required for the shared region*/
NumSize = size / 0x100000;
/* Xil_SetTlbAttributes is designed to configure memory for 1MB
* region. The API is called multiple times to configure the number
* of MBs required by shared memory size (calculated as NumSize)*/
for (Index = 0; Index < NumSize; Index ++)
Xil_SetTlbAttributes(addr + 0x100000 * Index, attrib);
}
/*
***********************************************************************
* IPI handling
@ -230,6 +199,28 @@ void platform_cache_disable() {
}
void platform_map_mem_region(unsigned int va,unsigned int pa, unsigned int size,unsigned int flags) {
unsigned int r5_flags;
/* Assume DEVICE_SHARED if nothing indicates this is memory. */
r5_flags = DEVICE_SHARED;
if (flags & SHARED_MEM) {
r5_flags = NORM_SHARED_NCACHE;
if (flags & WB_CACHE) {
r5_flags = NORM_SHARED_WB_WA;
} else if (flags & WT_CACHE) {
r5_flags = NORM_SHARED_WT_NWA;
}
} else if (flags & MEM_MAPPED) {
r5_flags = NORM_NSHARED_NCACHE;
if (flags & WB_CACHE) {
r5_flags = NORM_NSHARED_WB_WA;
} else if (flags & WT_CACHE) {
r5_flags = NORM_NSHARED_WT_NWA;
}
}
Xil_SetMPURegion(pa, size, r5_flags | PRIV_RW_USER_RW);
return;
}

12
lib/sw_apps/openamp_rpc_demo/src/rpc_demo.c
View file

@ -108,14 +108,6 @@ extern const struct remote_resource_table resources;
#define REDEF_O_APPEND 2000
#define REDEF_O_ACCMODE 3
/*
* Shared memory location as defined in linux device tree for remoteproc
* User may need to check with device tree of remoteproc and ensure the
* share memory address is same
*/
#define SHARED_MEMORY 0x3ED00000
#define SHARED_SIZE 0x400000 /* size of the shared memory*/
#define RPC_CHANNEL_READY_TO_CLOSE "rpc_channel_ready_to_close"
/* Application entry point */
@ -248,10 +240,6 @@ static void shutdown_cb(struct rpmsg_channel *rp_chnl) {
static void init_system() {
/* configure MPU for shared memory region */
zynqMP_r5_map_mem_region(SHARED_MEMORY, SHARED_SIZE, NORM_SHARED_NCACHE | PRIV_RW_USER_RW);
/* Initilaize GIC */
zynqMP_r5_gic_initialize();