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Commit 5fc4dfc3 authored by Adam Wujek's avatar Adam Wujek 💬
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arch/lm32: add a pointer to hdl_testbench structure in crt0.S 

Signed-off-by: Adam Wujek's avatarAdam Wujek <adam.wujek@cern.ch>
parent 3ea94d74
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Showing with 52 additions and 12 deletions
arch/lm32/crt0.S
View file @ 5fc4dfc3
......@@ -78,6 +78,7 @@
#include "include/revision.h"
#include "ppsi/proto-ext-whiterabbit/wr-api.h"
#include "arch/lm32/crt0.h"
#include "include/generated/autoconf.h"
/* From include/sys/signal.h */
#define SIGINT 2 /* interrupt */
#define SIGTRAP 5 /* trace trap */
......@@ -135,6 +136,16 @@ version_wrpc:
version_ppsi:
.byte WRS_PPSI_SHMEM_VERSION
/* Pointer to a structure used by testbenches, use only when
* CONFIG_WR_NODE_SIM is set */
.org HDL_TESTBENCH_PADDR
.global hdl_testbench_p
hdl_testbench_p:
#ifdef CONFIG_WR_NODE_SIM
.word hdl_testbench
#else
.word 0
#endif
.extern _irq_entry
.org 0xc0
.global _interrupt_handler
......
arch/lm32/crt0.h
View file @ 5fc4dfc3
......@@ -18,5 +18,6 @@
#define UPTIME_SEC_ADDR 0xa0
#define VERSION_WRPC_ADDR 0xa4
#define VERSION_PPSI_ADDR 0xa5
#define HDL_TESTBENCH_PADDR 0xbc
#endif /* __CRT0_H__ */
wrc_main_sim.c
View file @ 5fc4dfc3
......@@ -4,6 +4,7 @@
* Copyright (C) 2017 CERN (www.cern.ch)
* Author: Grzegorz Daniluk <grzegorz.daniluk@cern.ch>
* Author: Maciej Lipinski <maciej.lipinski@cern.ch>
* Author: Adam Wujek <adam.wujek@cern.ch>
*
* Released according to the GNU GPL, version 2 or any later version.
*
......@@ -32,23 +33,40 @@
#include "softpll_ng.h"
#include <wrpc.h> /*needed for htons()*/
int wrpc_test_1(void);
#define TESTBENCH_MAGIC 0x4d433ebc
#define TESTBENCH_VERSION 1
#define TESTBENCH_RET_OK 1
#define TESTBENCH_RET_ERROR 2
/*
* This is a variable that is meant to be set by testbench through
* This is a structure to pass information from the testbench to lm32's
* software. hdl_testbench structure is meant to be set by testbench through
* memory-manipulation.
*
* To allow this, there are still some elements missing:
* - the test_number variable needs to be at a known address, this is already
* done for other variables (for VLANs?), so the same needs to be done for
* this
* - testbench needs to be modified appropriately
* At the address HDL_TESTBENCH_PADDR is a pointer to hdl_testbench structure.
* hdl_testbench_t structure can be expanded to carry information with any
* size.
*
* The idea behind is that different tests for different testbenches are
* compiled in this file, and the proper test is loaded based on this variable.
* Each testbench sets the proper testbench number at th startup
* compiled in this file, and the proper test is loaded based on variable
* hdl_testbench.test_num.
* Each HDL testbench sets the proper testbench number at the startup.
*/
static int test_number;
struct hdl_testbench_t {
uint32_t magic;
uint32_t version;
uint32_t test_num;
uint32_t return_val;
};
struct hdl_testbench_t hdl_testbench = {
.magic = TESTBENCH_MAGIC,
.version = TESTBENCH_VERSION,
.test_num = 0,
};
int wrpc_test_1(void);
/*
* Basic initialization required for simulation
......@@ -123,6 +141,7 @@ int wrpc_test_1(void)
memcpy(tx_hdr.dstmac, "\x01\x1B\x19\x00\x00\x00", 6);
tx_hdr.ethtype = htons(0x88f7);
hdl_testbench.return_val = TESTBENCH_RET_OK;
/** main loop, send test frames */
for (;;) {
/* seqID */
......@@ -165,11 +184,20 @@ void main(void)
{
wrc_sim_initialize();
switch (test_number) {
case 0:
if (hdl_testbench.magic != TESTBENCH_MAGIC
|| hdl_testbench.magic != TESTBENCH_VERSION) {
/* Wrong testbench structure */
hdl_testbench.return_val = TESTBENCH_RET_ERROR;
while (1)
;
}
switch (hdl_testbench.test_num) {
case 1:
wrpc_test_1();
break;
default:
/* Wrong test number */
hdl_testbench.return_val = TESTBENCH_RET_ERROR;
while (1)
;
}
......
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