Hi,
Blow is my setup details:
>>I have the below RAM:
memory@48000000 {
device_type = "memory";
/* first 128MB is reserved for secure area. */
reg = <0x0 0x48000000 0x0 0x78000000>;
};
memory@600000000 {
device_type = "memory";
reg = <0x6 0x00000000 0x0 0x80000000>;
};
>>I have the below configuration for Linux in DTS to reserve the memory for
Jailhouse,
reserved-memory {
#address-cells = <2>;
#size-cells = <2>;
ranges;
jailhouse: jailhouse@58000000 {
reg = <0x0 0x58000000 0x0 0x1000000>;
no-map;
status = "okay";
};
jh_inmate@59000000 {
status = "okay";
no-map;
reg = <0x00 0x59000000 0x00 0x20000000>;
};
};
>>In the root cell configuration I have the RAM regions as below:
.mem_regions = {
/* RAM */ {
.phys_start = 0x48000000,
.virt_start = 0x48000000,
.size = 0x10000000,
.flags = JAILHOUSE_MEM_READ | JAILHOUSE_MEM_WRITE |
JAILHOUSE_MEM_EXECUTE,
},
/* Leave hole for hypervisor */
/* RAM */ {
.phys_start = 0x79000000,
.virt_start = 0x79000000,
.size = 0x47000000,
.flags = JAILHOUSE_MEM_READ | JAILHOUSE_MEM_WRITE |
JAILHOUSE_MEM_EXECUTE,
},
/* RAM */ {
.phys_start = 0x600000000,
.virt_start = 0x600000000,
.size = 0x80000000,
.flags = JAILHOUSE_MEM_READ | JAILHOUSE_MEM_WRITE |
JAILHOUSE_MEM_EXECUTE,
},
....
}
>>And for the Linux inmate I have the memory regions as,
.mem_regions = {
/* RAM */ {
.phys_start = 0x59000000,
.virt_start = CONFIG_INMATE_BASE,
.size = 0x20000000,
.flags = JAILHOUSE_MEM_READ | JAILHOUSE_MEM_WRITE |
JAILHOUSE_MEM_EXECUTE | JAILHOUSE_MEM_DMA |
JAILHOUSE_MEM_LOADABLE,
},
........
}
When I try and load the Linux image I am getting unhandled reads at the DDR
location (0x59000000):
root@hihope-rzg2m:~# jailhouse cell linux renesas-r8a774a1-linux-demo.cell
Image.gz -d inmate-r8a774a1-hihope.dtb -c "clk_ignore_unused rootwait rw"
Cell "renesas-r8a774a1-linux-demo" can be loaded
Unhandled data write at 0x59000000(1)
FATAL: unhandled trap (exception class 0x24)
Cell state before exception:
pc: ffff8000104762f0 lr: ffff800008b10e64 spsr: 20000005 EL1
sp: ffff8000118ebd40 elr: ffff8000104762f0 esr: 24 1 0000046
x0: ffff800011640000 x1: 00000000016278c0 x2: 0000000000003440
x3: 0000ffffffffffff x4: 0000000000000000 x5: ffff8000116434c0
x6: ffff800011640000 x7: d518c00058007c40 x8: 9100001f58007c40
x9: d5181040d2a00600 x10: d5033fdfd51b423f x11: d10403ff14000cb0
x12: a9010fe2a90007e0 x13: a9031fe6a90217e4 x14: a9052feaa90427e8
x15: 0000000000000000 x16: 0000000000000000 x17: 0000000000000000
x18: 0000000000000000 x19: ffff800011640000 x20: 00000000000034c0
x21: 0000ffffd57f1b28 x22: ffff800011109000 x23: 0000000000000000
x24: 00ffffd57f1b4800 x25: ffff8000118ebda8 x26: 0000000000000000
x27: ffff800011640000 x28: 00ffffd57f1b2800 x29: ffff8000118ebd40
Parking CPU 0 (Cell: "Renesas HopeRun HiHope RZ/G2M")
[ 970.239415] Unable to handle kernel NULL pointer dereference at virtual
address 0000000000000000
[ 970.248241] Mem abort info:
[ 970.251073] ESR = 0x86000006
[ 970.254150] EC = 0x21: IABT (current EL), IL = 32 bits
[ 970.259482] SET = 0, FnV = 0
[ 970.262555] EA = 0, S1PTW = 0
[ 970.265704] user pgtable: 4k pages, 48-bit VAs, pgdp=0000000604241000
[ 970.272163] [0000000000000000] pgd=0000000602b44003,
p4d=0000000602b44003, pud=0000000602b5b003, pmd=0000000000000000
[ 970.282807] Internal error: Oops: 86000006 [#1] PREEMPT SMP
[ 970.288386] Modules linked in: jailhouse(O)
[ 970.292586] CPU: 0 PID: 396 Comm: python3 Tainted: G O
5.10.31+ #36
[ 970.300161] Hardware name: HopeRun HiHope RZ/G2M with sub board (DT)
[ 970.306521] pstate: 20000005 (nzCv daif -PAN -UAO -TCO BTYPE=--)
[ 970.312539] pc : 0x0
[ 970.314737] lr : jailhouse_cmd_cell_load+0x2d4/0x3f8 [jailhouse]
[ 970.320748] sp : ffff8000118ebd40
[ 970.324067] x29: ffff8000118ebd40 x28: 00ffffd57f1b2800
[ 970.329388] x27: ffff800011640000 x26: 0000000000000000
[ 970.334707] x25: ffff8000118ebda8 x24: 00ffffd57f1b4800
[ 970.340026] x23: 0000000000000000 x22: ffff800011109000
[ 970.345345] x21: 0000ffffd57f1b28 x20: 00000000000034c0
[ 970.350665] x19: ffff800011640000 x18: 0000000000000000
[ 970.355984] x17: 0000000000000000 x16: 0000000000000000
[ 970.361303] x15: 0000000000000000 x14: a9052feaa90427e8
[ 970.366623] x13: a9031fe6a90217e4 x12: a9010fe2a90007e0
[ 970.371942] x11: d10403ff14000cb0 x10: d5033fdfd51b423f
[ 970.377262] x9 : d5181040d2a00600 x8 : 9100001f58007c40
[ 970.382580] x7 : d518c00058007c40 x6 : ffff800011640000
[ 970.387900] x5 : ffff8000116434c0 x4 : 0000000000000000
[ 970.393220] x3 : 0000ffffffffffff x2 : 0000000000003440
[ 970.398540] x1 : 00000000016278c0 x0 : ffff800011640000
[ 970.403860] Call trace:
[ 970.406313] 0x0
[ 970.408161] jailhouse_ioctl+0xd8/0x100 [jailhouse]
[ 970.413053] __arm64_sys_ioctl+0xac/0xf0
[ 970.416985] el0_svc_common.constprop.3+0x68/0x170
[ 970.421782] do_el0_svc+0x24/0x90
[ 970.425105] el0_svc+0x14/0x20
[ 970.428165] el0_sync_handler+0x90/0xb8
[ 970.432008] el0_sync+0x158/0x180
[ 970.435335] Code: bad PC value
[ 970.438406] ---[ end trace 23ec5ec9e67e1b67 ]---
[ 970.443029] Kernel panic - not syncing: Oops: Fatal exception
[ 970.448780] SMP: stopping secondary CPUs
[ 970.452722] Kernel Offset: disabled
[ 970.456217] CPU features: 0x0040022,21002004
[ 970.460493] Memory Limit: none
[ 970.463557] ---[ end Kernel panic - not syncing: Oops: Fatal exception
]---
* Looking at some of the linux inmate configs there are two regions of RAM
specified is this a strict requirement?
* For the inmate RAM should the virt_start = CONFIG_INMATE_BASE?
Cheers,
Prabhakar
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